10 CSR 60-2.015 - Definitions
PUBLISHER'S NOTE: The secretary of state has determined that the publication of the entire text of the material which is incorporated by reference as a portion of this rule would be unduly cumbersome or expensive. This material as incorporated by reference in this rule shall be maintained by the agency at its headquarters and shall be made available to the public for inspection and copying at no more than the actual cost of reproduction. This note applies only to the reference material. The entire text of the rule is printed here.
(1) The terms used in 10 CSR 60 shall have
the meanings set forth in the Missouri Safe Drinking Water Act, the federal
Safe Drinking Water Act and regulations, or this rule, unless the context of
the term clearly requires otherwise. In the event of any conflict or
inconsistency, the more stringent definition shall apply.
(2) Definitions.
(A) Terms beginning with the letter A.
1. Action level. The concentration of lead or
copper in water which determines, in some cases, the treatment requirements,
system modifications, public education, or other requirements as specified by
the department that a water system is required to complete.
2. Air-gap separation. A backflow prevention
assembly consisting of a physical separation between the free-flowing discharge
end of a public water system pipeline and an open or nonpressurized receiving
vessel. An approved air-gap separation shall be at least twice the diameter of
the system pipe measured vertically above the overflow rim of the vessel. In no
case shall the distance be less than one inch (1").
3. Alpha particle. A particle identical with
a helium nucleus, emitted from the nucleus of a radioactive element.
4. Applicant. The legal name of the public
water system for purposes of 10 CSR-60.
5. Auxiliary intake. Any piping, connection,
or device whereby water may be secured from a source other than the primary
source.
6. Auxiliary water system.
Any supply or source of water other than the approved public water
system.
(B) Terms
beginning with the letter B.
1. Backflow. The
undesirable reversal of flow of water or mixtures of water and other liquids,
gases, or other substances into the public water system from any
source(s).
2. Backflow hazard. Any
facility which, because of the nature and extent of activities on the premises
or the materials used in connection with the activities or stored on the
premises, would present an actual or potential health hazard to customers of
the public water system or would threaten to degrade the water quality of the
public water system should backflow occur.
A.
Class I backflow hazard. A backflow hazard which presents an actual or
potential health hazard to customers of the public water system should backflow
occur. A list of customer facilities, not all inclusive, considered to be Class
I backflow hazards is included in
10 CSR
60-11.010.
B. Class II backflow hazard. A backflow
hazard which would threaten to degrade the water quality of the public water
system should backflow occur. A list of customer facilities, not all inclusive,
considered to be Class II backflow hazards is included in
10 CSR
60-11.010.
3. Backflow prevention assembly. An assembly
designed to prevent the reverse flow of water or other substances from a
customer facility back into the public water distribution system. See also
definitions of air-gap separation, double check valve, and reduced pressure
principle backflow prevention assembly.
4. Backflow prevention assembly tester. A
person who utilizes recognized backflow prevention assembly testing procedures
to determine whether or not an assembly is functioning properly. Requirements
for backflow prevention assembly tester certification are in 10 CSR
60-11.
5. Bag filters.
Pressure-driven separation devices that remove particulate matter larger than
one (1) micrometer using an engineered porous filtration media. They are
typically constructed of a non-rigid, fabric filtration media housed in a
pressure vessel in which the direction of flow is from the inside of the bag to
the outside.
6. Bank filtration.
Water treatment process that uses a well to recover surface water that has
naturally infiltrated into ground water through a river bed or bank(s).
Infiltration is typically enhanced by the hydraulic gradient imposed by a
nearby pumping water supply or other well(s).
7. Best available technology. The best
technology, treatment, or other means which the department finds, after
examination for efficacy under field conditions and not solely under laboratory
conditions, are available (taking cost into consideration). For the purpose of
setting maximum contaminant levels for synthetic organic chemicals, any best
available technology must be at least as effective as granular activated
carbon.
8. Beta particle. A
particle, identical with an electron, emitted from the nucleus of a radioactive
element.
9. Breakpoint
chlorination. The point at which sufficient chlorine has been applied to water
to satisfy the chlorine demand which should result in a total chlorine residual
of at least seventy-five percent (75%) free available chlorine.
(C) Terms beginning with the
letter C.
1. Cartridge filters.
Pressure-driven separation devices that remove particulate matter larger than
one (1) micrometer using an engineered porous filtration media. They are
typically constructed as rigid or semi-rigid, self-supporting filter elements
housed in pressure vessels in which flow is from the outside of the cartridge
to the inside.
2. Certificate. The
certificate of competency issued by the department stating that a person has
met the requirements for the specified operator classification of the
certification program under the provisions of
10 CSR
60-14.020.
3. Certificate of examination. A certificate
issued to a person who passes a written examination but does not meet the
experience requirements for the classification of examination taken.
4. Chief operator. The person designated by
the owner of a public water system to have direct, on-site responsibility for
the operation of a water treatment plant or water distribution system, or
both.
5. Chloramines. All amino or
imino groups in which the hydrogen has been replaced totally or in part by
chlorine.
6. Class I backflow
hazard. See backflow hazard.
7.
Class II backflow hazard. See backflow hazard.
8. Clean compliance history. For the purposes
of 10 CSR
60-4.022, a record of no E.coli
Maximum Contaminant Level violations, no monitoring violations, and no coliform
treatment technique trigger exceedances or treatment technique violations for a
minimum of the previous twelve (12) consecutive months.
9. Coagulation. A process using coagulant
chemicals and mixing by which colloidal and suspended materials are
destabilized and agglomerated into flocs.
10. Combined chlorine residual. That portion
of the total chlorine residual which is not free available chlorine.
11. Combined distribution system. The
interconnected distribution system consisting of the distribution systems of
wholesale systems and of the consecutive systems that receive finished
water.
12. Community water system.
A public water system which serves at least fifteen (15) service connections
and is operated on a year-round basis or regularly serves at least twenty-five
(25) residents on a year-round basis.
13. Compliance cycle. A nine- (9-) year
calendar year cycle during which public water systems must monitor. Each
compliance cycle consists of three (3), three- (3-) year compliance periods.
The first calendar year cycle begins January 1, 1993 and ends December 31, 2001
and continues in nine- (9-) year cycles thereafter.
14. Compliance period. A three- (3-) year
calendar year period within a compliance cycle. Each compliance cycle has three
(3), three- (3-) year compliance periods. The first compliance period begins at
the start of a compliance cycle.
15. Confluent growth. A continuous bacterial
growth covering the entire filtration area of a membrane filter, or a portion
of the area, in which bacterial colonies are not discrete.
16. Consecutive system. A public water system
that receives some or all of its finished water from one (1) or more wholesale
systems. Delivery may be through a direct connection or through the
distribution system of one (1) or more consecutive systems.
17. Consolidated formations. Earth material
which has been created by geological processes, cemented, or compacted into a
coherent or firm mass.
18.
Containment. Protection of the public water system by installation of a
department-approved backflow prevention assembly or air-gap separation at the
user connection from the main service line(s).
19. Contaminant. Any physical, chemical,
biological, or radiological substance or matter in water including, but not
limited to, those substances for which maximum contaminant levels are
established by the department.
20.
Conventional filtration treatment. A series of treatment processes including
coagulation, flocculation, sedimentation, and filtration resulting in
substantial particulate removal.
A. Required
treatment for ground water systems under the direct influence of surface water.
One (1) stage of treatment must be provided as follows: rapid mix,
flocculation, and sedimentation followed by filtration. Disinfection also shall
be provided. Raw water quality characteristics may require additional
treatment.
B. Required treatment
for surface water systems. Two (2) stages of treatment must be provided as
follows: primary rapid mix, flocculation, and sedimentation followed by
secondary rapid mix, flocculation, and sedimentation, operated in series,
followed by filtration and disinfection contact storage. Raw water quality
characteristics may require additional treatment.
21. Corrosion inhibitor. A substance capable
of reducing the corrosivity of water toward metal plumbing materials,
especially lead and copper, by forming a protective film on the interior
surface of those materials.
22.
Cross-connection. Any actual or potential connection or structural arrangement
between a public water system and any other source or system through which it
is possible to introduce into any part of the public water system any used
water, industrial fluid, gas, or substance other than the intended potable
water with which the system is supplied. By-pass arrangements, jumper
connections, removable sections, swivel or change-over devices, and other
temporary or permanent devices through which or because of which, backflow can
or may occur are considered to be cross-connections.
23. CT. The product of the residual
disinfectant concentration (C) in milligrams per Liter (mg/L) determined before
or at the first customer and the corresponding disinfectant contact time (T) in
minutes (that is, C multiplied by T (C × T)). (See also residual
disinfectant concentration and disinfectant contact time.)
24. Customer. Any person who receives water
from a public water system.
25.
Customer service line. The pipeline from the public water system to the first
tap, fixture, receptacle, or other point of customer water use or to the first
auxiliary water system or pipeline branch in a building.
26. Customer water system. All piping,
fixtures, and appurtenances, including auxiliary water systems, used by a
customer to convey water on his/her premises.
(D) Terms beginning with the letter D.
1. Department. The Missouri Department of
Natural Resources.
2. Department of
Health. The Missouri Department of Health and Senior Services.
3. Director. The director of the Missouri
Department of Natural Resources.
4.
Disinfectant. Includes, but is not limited to, chlorine, chlorine dioxide,
chloramines, and ozone added to water in any part of the treatment or
distribution process, that is intended to kill or inactivate pathogenic
microorganisms.
5. Disinfectant
contact time. The "T" in the equation CT. The time in minutes that it takes for
water to move from the point of disinfectant application or the previous point
of disinfectant residual measurement to a point before or at the point where
residual disinfectant concentration (C) is measured as determined by a
department-approved study as outlined in the Missouri Guidance Manual
for Surface Water System Treatment Requirements, 1992.
6. Disinfection. A process which inactivates
pathogenic organisms in water by chemical oxidants or equivalent
agents.
7. Domestic or other
nondistribution system plumbing problem. A coliform contamination problem in a
public water system with more than one (1) service connection that is limited
to the specific service connection from which the coliform-positive sample was
taken.
8. Dose equivalent. The
product of the absorbed dose from ionizing radiation and factors that account
for difference in biological effectiveness due to the type of radiation and its
distribution in the body as specified by the International Commission of
Radiological Units and Measurements (ICRU).
9. Double check valve assembly. A backflow
prevention assembly composed of two (2) single, independently acting,
internally spring loaded, approved check valves including tightly closing
resilient-seated shutoff valves located at each end of the assembly and fitted
with properly located test cocks.
10. Dual sample set. A set of two (2) samples
collected at the same time and same location, with one (1) sample analyzed for
total trihalomethanes (TTHM) and the other sample analyzed for haloacetic acids
5 (HAA5). Dual sample sets are collected for the purposes of conducting an
initial distribution system evaluation (IDSE) and determining compliance with
the TTHM and HAA5 maximum contaminant levels (MCLs) under Stage 2
Disinfectants/Disinfection By-Products requirements.
(E) Terms beginning with the letter E.
1. Effective corrosion inhibitor residual.
For the purpose of the lead and copper provisions of these rules, a
concentration sufficient to form a protective film on the interior walls of a
pipe.
2. Engineer. An individual
registered as a professional engineer in Missouri.
3. Enhanced coagulation. The addition of
sufficient coagulant for improved removal of disinfection byproduct precursors
by conventional filtration treatment.
4. Enhanced softening. The improved removal
of disinfection byproduct precursors by precipitative softening.
(F) Terms beginning with the
letter F.
1. Facility. A single tract or
contiguous tracts of land and any improvements on them, upon which one (1) or
more service connections are located, and which, except for easements and
public right-of-way, are wholly owned, leased, or otherwise subject to the
control of the customer.
2. Filter
profile. A graphical representation of individual filter performance, based on
continuous turbidity measurements or total particle counts versus time for an
entire filter run, from startup to backwash inclusively, that includes an
assessment of filter performance while another filter is being
backwashed.
3. Filtration. A
process for removing particulate matter from water by passage through porous
media.
4. Finished water. Water
that is introduced into the distribution system of a public water system and is
intended for distribution and consumption without further treatment, except
treatment necessary to maintain water quality in the distribution system (for
example, booster disinfection, addition of corrosion control
chemicals).
5. Finished water
storage facility. A tank, reservoir, or other man-made facility used to store
potable water that will undergo no further treatment except residual
disinfection.
6. First draw sample.
A one (1) liter sample of tap water, collected in accordance with the lead and
copper provisions of these rules only, that has been standing in plumbing pipes
at least six (6) hours and is collected without flushing the tap.
7. Flocculation. A process to enhance the
collection of smaller floc particles into larger, more easily settleable
particles through gentle stirring by hydraulic or mechanical means.
8. Flowing stream. A course of running water
flowing in a definite channel.
(G) Terms beginning with the letter G.
1. GAC10. Granular activated carbon filter
beds with an empty-bed contact time of ten (10) minutes based on average daily
flow and a carbon reactivation frequency of every one hundred eighty (180)
days, except that the reactivation frequency for GAC10 used as a best available
technology for compliance with Stage 2 Disinfectants/Disinfection ByProducts is
one hundred twenty (120) days.
2.
GAC20. Granular activated carbon filter beds with an empty-bed contact time of
twenty (20) minutes based on average daily flow and a carbon reactivation
frequency of every two hundred forty (240) days.
3. Gross alpha particle activity. The total
radioactivity due to alpha particle emission as inferred from measurements on a
dry sample.
4. Gross beta particle
activity. The total radioactivity due to beta particle emission as inferred
from measurements on a dry sample.
5. Ground water under the direct influence of
surface water (GWUDISW). Any water beneath the surface of the ground with
either of the following:
A. Significant and
relatively rapid shifts in water characteristics such as turbidity,
temperature, conductivity, or pH which closely correlate to climatological or
surface water conditions. Direct influence must be determined for individual
sources in accordance with criteria established by the department. The
department's determination of direct influence may be used on site-specific
measurements of water quality or documentation of well construction
characteristics, or both, and geology with field evaluation; or
B. Significant occurrence of insects or other
macroorganisms, algae, or large-diameter pathogens such as Giardia
lamblia or Cryptosporidium.
(H) Terms beginning with the
letter H.
1. Haloacetic acids (five) (HAA5).
The sum of the concentrations in milligrams per liter of the haloacetic acid
compounds (monochloroacetic acid, dichloroacetic acid, trichloroacetic acid,
monobromoacetic acid, and dibromoacetic acid), rounded to two (2) significant
figures after addition.
(I) Terms beginning with the letter I.
1. Initial Compliance Period. That period
beginning January 1, 1993, for existing sources. For new water supply sources,
the first full three- (3-) year compliance period which begins no more than
eighteen (18) months after the source is placed in service.
2. Iron removal. The removal of iron and
manganese from a ground water source with the treated water being exposed to
aeration and chemical oxidation, pH adjustment, sedimentation and
filtration.
(J) Terms
beginning with the letter J. (Reserved)
(K) Terms beginning with the letter K.
(Reserved)
(L)
Terms beginning with the letter L.
1.
Lake/reservoir. A natural or man-made basin or hollow on the earth's surface in
which water collects or is stored that may or may not have a current or single
direction of flow.
2. Lead service
line. A service line made of lead which connects the water main to the building
inlet and any lead pigtail, gooseneck, or other fitting which is connected to
that lead line.
3.
Legionella. A genus of bacteria some species of which have
caused a type of pneumonia called Legionnaires disease.
4. Level 1 assessment is an evaluation to
identify the possible presence of sanitary defects, defects in distribution
system coliform monitoring practices, and (when possible) the likely reason
that the system triggered the assessment. It is conducted by the system
operator or owner. Minimum elements include review and identification of
atypical events that could affect distributed water quality or indicate that
distributed water quality was impaired; changes in distribution system
maintenance and operation that could affect distributed water quality
(including water storage); source and treatment considerations that bear on
distributed water quality, where appropriate (e.g., whether a ground water
system is disinfected); existing water quality monitoring data; and
inadequacies in sample sites, sampling protocol, and sample processing. The
system must conduct the assessment consistent with any department directives
that tailor specific assessment elements with respect to the size and type of
the system and the size, type, and characteristics of the distribution
system.
5. Level 2 assessment is an
evaluation to identify the possible presence of sanitary defects, defects in
distribution system coliform monitoring practices, and (when possible) the
likely reason that the system triggered the assessment. A Level 2 assessment
provides a more detailed examination of the system (including the system's
monitoring and operational practices) than does a Level 1 assessment through
the use of more comprehensive investigation and review of available
information, additional internal and external resources, and other relevant
practices. It is conducted by an individual approved by the department, which
may include the system operator. Minimum elements include review and
identification of atypical events that could affect distributed water quality
or indicate that distributed water quality was impaired; changes in
distribution system maintenance and operation that could affect distributed
water quality (including water storage); source and treatment considerations
that bear on distributed water quality, where appropriate (e.g., whether a
ground water system is disinfected); existing water quality monitoring data;
and inadequacies in sample sites, sampling protocol, and sample processing. The
system must conduct the assessment consistent with any department directives
that tailor specific assessment elements with respect to the size and type of
the system and the size, type, and characteristics of the distribution system.
The system must comply with any expedited actions or additional actions
required by the department in the case of an E. coli MCL
violation.
6. Lime softening. The
application of lime to reduce the concentrations of calcium and magnesium and,
to a lesser extent, iron, manganese, or radionuclides from source
water.
7. Locational running annual
average (LRAA). The average of sample analytical results for samples taken at a
particular monitoring location during the previous four (4) calendar
quarters.
(M) Terms
beginning with the letter M.
1. Man-made beta
particle and photon emitters. All radionuclides emitting beta particles,
photons, or both, except the daughter products of thorium 232, uranium 235, and
uranium 238, listed in the EPA Implementation Guidance for Radionuclides,
Appendix J.
2. Maximum contaminant
level (MCL). The maximum permissible level, as established in 10 CSR 60-4, of a
contaminant in any water which is delivered to any user of a public water
system.
3. Maximum contaminant
level goal (MCLG). A level of a contaminant in drinking water at which no known
or anticipated adverse effect on the health of persons would occur and which
allows an adequate margin of safety. MCLGs are nonenforceable health
goals.
4. Maximum residual
disinfectant level (MRDL). A level of a disinfectant that may not be exceeded
at the consumer's tap without an unacceptable possibility of adverse health
effects.
5. Maximum residual
disinfectant level goal (MRDLG). The maximum level of a disinfectant added for
water treatment at which no known or anticipated adverse effect on the health
of persons would occur, and which allows an adequate margin of safety. MRDLGs
are nonenforceable health goals and do not reflect the benefit of the addition
of the chemical for control of waterborne microbial contaminants.
6. Maximum total trihalomethane potential
(MTTHMP). The maximum concentration of total trihalomethanes produced in a
given water containing a disinfectant residual after seven (7) days at a
temperature of twenty-five degrees Celsius (25 °C) or above.
7. Membrane filtration. Pressure or vacuum
driven separation process in which particulate matter larger than one (1)
micrometer is rejected by an engineered barrier, primarily through a
size-exclusion mechanism, and which has a measurable removal efficiency of a
target organism that can be verified through the application of a direct
integrity test. This definition includes the common membrane technologies of
microfiltration, ultrafiltration, nanofiltration, and reverse
osmosis.
8.
Missouri
Guidance Manual for Surface Water System Treatment Requirements, 1992.
This document is published by the Missouri Department of Natural Resources, PO
Box 176, Jefferson City, MO 65102-0176, dated 1992, which is hereby
incorporated by reference without any later amendments or
modifications.
9. Missouri Safe
Drinking Water Law. The Revised Statutes of Missouri, sections
640.100 through
640.140.
(N) Terms beginning with the letter N.
1. Near the first service connection. At one
(1) of the twenty percent (20%) of all service connections in the entire system
that are nearest the water supply treatment facility, as measured by water
transport time within the distribution system.
2. Nontransient noncommunity water system. A
public water system that is not a community water system and that regularly
serves at least twenty-five (25) of the same persons over six (6) months per
year.
(O) Terms beginning
with the letter O.
1. On-site inspection. An
on-site review of the water source, facilities, equipment, operation, and
maintenance of a public water system for the purpose of evaluating the adequacy
of that source, facilities, equipment, operation, and maintenance for producing
and distributing safe drinking water.
2. Operator. Any individual who operates or
determines the methods of operating a water system, either directly or by
order.
3. Optimal corrosion control
treatment. For the purpose of the lead and copper provisions of these rules
only, means the corrosion control treatment that minimizes the lead and copper
concentrations at users' taps while insuring that the treatment does not cause
the water system to violate any other drinking water regulations.
(P) Terms beginning with the
letter P.
1. Person. Any individual,
partnership, co-partnership, firm, company, public or private corporation,
association, homeowners' association, joint stock company, trust, estate,
political subdivision or any agency, board, department, or bureau of the state
or federal government, or any other legal entity whatever, which is recognized
by law as the subject of rights and duties.
2. Picocurie (pCi). The quantity of
radioactive material producing 2.22 nuclear transformations per
minute.
3. Plant intake. The works
or structures at the head of a conduit through which water is diverted from a
source (for example, river or lake) into the treatment plant.
4. Point of entry treatment device (POE). A
treatment device applied to the drinking water entering a house or other
building for the purpose of reducing contaminants in the drinking water
distributed throughout the house or building.
5. Point of use treatment device (POU). A
treatment device applied to a single tap for the purpose of reducing
contaminants in the drinking water at that tap.
6. Presedimentation. A preliminary treatment
process used to remove gravel, sand, and other particulate material from the
source water through settling before the water enters the primary clarification
and filtration processes in a treatment plant.
7. Primary public water system. A public
water system which obtains its source of water directly from a well,
infiltration gallery, lake, reservoir, river, spring, or stream.
8. Public water system. A system for the
provision to the public of piped water for human consumption, if the system has
at least fifteen (15) service connections or regularly serves an average of at
least twenty-five (25) individuals daily at least sixty (60) days out of the
year. The system includes any collection, treatment, storage, or distribution
facilities used in connection with the system. A public water system is either
a community water system or a noncommunity water system.
(Q) Terms beginning with the letter Q.
1. Quarterly. Unless otherwise specified in
10 CSR 60, quarterly refers to the calendar quarters, January through March,
April through June, July through September, and October through
December.
(R) Terms
beginning with the letter R.
1. Radioactivity.
The spontaneous, uncontrollable disintegration of the nucleus of an atom with
the emission of particles and rays.
2. Rapid mix. The rapid dispersion of
chemicals throughout the water to be treated by violent agitation.
3. Reduced pressure principle backflow
prevention assembly. A device containing two (2) independently acting,
internally spring loaded, approved check valves, together with a hydraulically
operating, mechanically independent pressure differential relief valve located
between the check valves and below the first check valve. The unit shall
include properly located test cocks and tightly closing, resilient-seated
shut-off valves at each end of the assembly.
4. Rem. The unit of dose equivalent from
ionizing radiation to the total body or any internal organ or organ system. A
millirem (mrem) is one one-thousandth (1/1000) of a rem.
5. Repeat compliance period. Any subsequent
compliance period after the initial compliance period.
6. Residual disinfectant concentration. The
"C" in the equation CT. The concentration of disinfectant measured in
milligrams per liter (mg/L) in a representative sample of water.
7. Rural. Shall not include any area in any
city or town which has a population in excess of ten thousand (10,000)
inhabitants according to the latest reliable population estimate for purposes
of 10 CSR
60-13.010.
(S) Terms beginning with the letter S.
1. Sanitary defect is a defect that could
provide a pathway of entry for microbial contamination into the distribution
system or that is indicative of a failure or imminent failure in a barrier that
is already in place.
2. Sanitary
survey. An on-site engineering inspection and review of a public water
system-its supply source(s), treatment of supply source(s), treatment
facilities, and distribution system(s), for the purpose of evaluating their
adequacy, reliability, and safety for producing and distributing drinking
water.
3. Seasonal system is a
non-community water system that is not operated as a public water system on a
year-round basis and starts up and shuts down at the beginning and end of each
operating season.
4. Secondary
contaminant levels. Those contaminant levels established by the department for
contaminants which may affect the taste, odor, color, staining, and
scale-forming tendencies of water.
5. Secondary public water system. A public
water system which obtains all its water from an approved public water
system(s), consists of a water distribution system, and resells the water or is
a carrier which conveys passengers in interstate commerce. Parts of a primary
public water system may be classified as being a secondary public water system
if they meet this definition and are physically separated from those parts
served by the source for the primary public water system.
6. Sedimentation. A process for removal of
solids before filtration by gravity separation.
7. Service connection. Any water line or pipe
connected to a water distribution main or pipe for the purpose of conveying
water to a point of use.
8. Service
line sample. A one (1) liter sample of water, collected in accordance with the
lead and copper provisions of these rules only, that has been standing for at
least six (6) hours in a service line.
9. Single family structure. For the purpose
of the lead and copper provisions of these rules only, a building constructed
as a single family residence that is currently used as either a residence or a
place of business.
10.
Standard Methods for the Examination of Water and Wastewater, 18th
Edition. This refers to the document published by the American Public
Health Association, American Water Works Association, and the Water
Environmental Federation in 1992 which is hereby incorporated by reference
without any later amendments or modifications. To obtain a copy, contact the
American Public Health Association at 1015 Fifteenth Street NW, Washington DC,
20005.
11. Subdivision. Any land
which is divided, or proposed to be divided, into fifteen (15) or more lots or
tracts, whether contiguous or not, for the purpose of sale, lease, rental, or
construction of permanent structures on lots or tracts as part of a common
plan; or where subdivided land is offered for sale or lease, or where
structures are constructed by a single developer or a group of developers
acting in concert and where the lots or land or structures are contiguous or
known, designated, or advertised as a common unit or by a common name. The lots
or land tracts and structures shall be presumed, without regard to the number
of lots or dwellings covered by each individual offering, as being offered for
sale or lease as part of a common plan.
12. Supplier of water. Any person who owns,
controls, or operates a public water system.
13. Surface water. All water which is open to
the atmosphere and subject to surface runoff; this includes all tributary
streams and drainage basins, natural lakes, and artificial reservoirs above the
point of the water supply intake.
14. System with a single service connection.
A system which supplies drinking water to consumers via a single service
line.
(T) Terms beginning
with the letter T.
1. Too numerous to count
(TNTC). The total number of bacterial colonies exceeds two hundred (200) on a
forty-seven millimeter (47 mm) diameter membrane filter used for coliform
detection.
2. Total organic carbon
(TOC). Total organic carbon in milligrams per liter (mg/L) measured using heat,
oxygen, ultraviolet irradiation, chemical oxidants, or combinations of these
oxidants that convert organic carbon to carbon dioxide, rounded to two (2)
significant figures.
3. Total
trihalomethanes (TTHM). The sum of the concentration in mg/L of the
trihalomethane compounds, trichloromethane (chloroform), dibromochloromethane,
bromodichloromethane, and tribromomethane (bromoform), rounded to two (2)
significant figures.
4. Transient
noncommunity water system. A public water system that is not a community water
system, which has at least fifteen (15) service connections or regularly serves
an average of at least twenty-five (25) individuals daily at least sixty (60)
days out of the year.
5. Treated
water. Water which is handled or processed in any manner to change the
physical, chemical, biological, or radiological content and includes water
exposed to the atmosphere by aeration.
6. Trihalomethane (THM). One (1) of the
family of organic compounds, named as derivatives of methane, where three (3)
of the four (4) hydrogen atoms in methane are each substituted by a halogen
atom in the molecular structure.
7.
Two- (2-) stage lime softening. A process in which chemical addition and
hardness precipitation occur in each of two (2) distinct unit clarification
processes in series prior to filtration.
(U) Terms beginning with the letter U.
1. Unconsolidated formations. Earth material
(sand, gravel, silt, clay) which is uncemented and uncompacted and which has
been deposited by a natural process. This material retains loose or relatively
soft physical characteristics.
2.
Uncovered finished water storage facility. A tank, reservoir, or other facility
used to store water that will undergo no further treatment to reduce microbial
pathogens except residual disinfection and is directly open to the atmosphere.
(Note: uncovered finished water storage facilities are prohibited under
10 CSR
60-4.080(7).)
(V) Terms beginning with the letter V.
1. Virus. A virus of fecal origin which is
infectious to humans by waterborne transmission.
(W) Terms beginning with the letter W.
1. Water distribution main. A pipe within the
water distribution system that delivers finished drinking water from a water
supply source, treatment plant, or storage tank to a service connection,
hydrant, or to a customer service line.
2. Water distribution system. All piping,
conduits, valves, hydrants, storage facilities, pumps, and other appurtenances,
excluding service connections, which serve to deliver water from a water
treatment plant or water supply source to the public.
3. Water system. All sources from which water
is derived for drinking or domestic use by the public, also all structures,
conduits, and appurtenances by means of which water for use is treated, stored,
or delivered to consumers, except service connections from water distribution
systems to buildings and plumbing within or in connection with buildings
served.
4. Water supply source. All
sources of water supply including wells, infiltration galleries, springs,
reservoirs, lakes, streams, or rivers from which water is derived for public
water systems, including the structures, conduits, pumps, and appurtenances
used to withdraw water from the source or to store or transport water to the
water treatment facility or water distribution system.
5. Water treatment facility. A facility which
uses specific processes such as sedimentation, coagulation, filtration,
disinfection, aeration, oxidation, ion exchange, fluoridation, or other
processes which serve to add components or to alter or remove contaminants from
a water supply source.
6.
Waterborne disease outbreak. The significant occurrence of acute infectious
illness associated with the ingestion of water as declared by the Department of
Health and Senior Services.
7.
Wholesale system. A public water system that treats source water as necessary
to produce finished water and then delivers some or all of that finished water
to another public water system. Delivery may be through a direct connection or
through the distribution system of one (1) or more consecutive
systems.
Notes
State regulations are updated quarterly; we currently have two versions available. Below is a comparison between our most recent version and the prior quarterly release. More comparison features will be added as we have more versions to compare.
No prior version found.