327 IAC 8-2-14 - Reporting and record keeping requirements; systems that provide filtration
Authority: IC 13-13-5; IC 13-14-8-7; IC 13-14-9; IC 13-18-3; IC 13-18-16
Affected: IC 13-18
Sec. 14.
(a)
Effective June 29, 1993, a public water system that uses a surface water source
or a ground water source under the direct influence of surface water and
provides filtration treatment must report monthly to the commissioner the
information specified in this section. Systems shall submit information to the
commissioner using the methods specified in section 13(e) of this
rule.
(b) Turbidity measurements as
required by section 8.8(b) of this rule must be reported within ten (10) days
after the end of each month the system serves water to the public. Information
that must be reported includes the following:
(1) The total number of filtered water
turbidity measurements taken during the month.
(2) The number and percentage of filtered
water turbidity measurements taken during the month which are less than or
equal to the turbidity limits specified in section 8.5(c) of this rule for the
filtration technology being used.
(3) The date and value of any turbidity
measurements taken during the month which exceed five (5) nephelometric
turbidity units (NTU).
(c) Disinfection information specified in
section 8.8 of this rule must be reported to the commissioner within ten (10)
days after the end of each month the system serves water to the public.
Information that must be reported includes the following:
(1) For each day, the lowest measurement of
residual disinfectant concentration in milligrams per liter in water entering
the distribution system.
(2) The
date and duration of each period when the residual disinfectant concentration
in water entering the distribution system fell below two-tenths (0.2) milligram
per liter and when the commissioner was notified of the occurrence.
(3) The following information on the samples
taken in the distribution system in conjunction with total coliform monitoring
under section 8.6 of this rule:
(A) Number of
instances where the residual disinfectant concentration is measured.
(B) Number of instances where the residual
disinfectant concentration is not measured but heterotrophic bacteria plate
count (HPC) is measured.
(C) Number
of instances where the residual disinfectant concentration is measured but not
detected and no HPC is measured.
(D) Number of instances where no residual
disinfectant concentration is detected and where HPC is greater than five
hundred (500) per milliliter.
(E)
Number of instances where the residual disinfectant concentration is not
measured and HPC is greater than five hundred (500) per milliliter.
(F) For the current and previous month the
system serves water to the public, the value of V in the following formula:
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Where: a = The value in clause (A).
b = The value in clause (B).
c = The value in clause (C).
d = The value in clause (D).
e = The value in clause (E).
(G) The commissioner may determine, based on
site-specific considerations, that a system has no means for having a sample
transported and analyzed for HPC by a certified laboratory within the requisite
time and temperature conditions specified by section 8.7(3) of this rule and
that the system is providing adequate disinfection in the distribution system,
the requirements of clauses (A) through (F) do not apply.
(4) A system need not report the data listed
in subdivision (1) if all data listed in subdivisions (1) through (3) remain on
file at the system and the commissioner determines that the system has
submitted all the information required by subdivisions (1)
through (3) for at least twelve (12) months.
(d) Each system, upon
discovering that a waterborne disease outbreak potentially attributable to that
water system has occurred, must report that occurrence to the commissioner as
soon as possible, but no later than by the end of the next business day. If at
any time the turbidity exceeds five (5) NTU, the system must consult with the
department of environmental management as soon as practical, but no later than
twenty-four (24) hours after the exceedance is known in accordance with the
public notification requirements under
327
IAC 8-2.1-9(b)(3). If at any time the
residual falls below two-tenths (0.2) milligram per liter in the water entering
the distribution system, the system must notify the commissioner as soon as
possible, but no later than the end of the next business day. The system also
must notify the commissioner by the end of the next business day whether or not
the residual was restored to at least two-tenths (0.2) milligram per liter
within four (4) hours.
Notes
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