327 IAC 8-2.3-4 - Ground water source microbial monitoring and analytical methods
Authority: IC 13-13-5; IC 13-14-8-2; IC 13-14-8-7; IC 13-18-3-1; IC 13-18-3-2; IC 13-18-16-8; IC 13-18-16-9
Affected: IC 13-18-2; IC 13-18-16
Sec. 4.
for that ground water source only if the commissioner approves the use of E. coli as a fecal indicator for source water monitoring under this subsection and the commissioner approves the use of the source water sample to meet the requirements of 327 IAC 8-2-8.1. If the repeat sample collected from the ground water source is E. coli positive, the PWS using ground water shall comply with subdivision (3).
for that ground water source only if the commissioner approves the use of E. coli as a fecal indicator for source water monitoring under this subsection and the commissioner approves the use of a single sample for meeting both the triggered source water monitoring requirements in this subsection and the repeat monitoring requirements in 40 CFR 141.858 *. If the repeat sample collected from the ground water source is E. coli-positive, the PWS using ground water shall comply with subdivision (3).
then the PWS using ground water shall collect five (5) additional source water samples from the same source within twenty-four (24) hours of being notified of the fecal indicator-positive sample.
Analytical Methods for Source Water Monitoring | ||
Fecal indicator1 | Methodology | Method Citation* |
E. coli |
Colilert2 Colisure2 Membrane Filter Method with MI Agar m-ColiBlue24 Test E*Colite Test EC-MUG3 NA-MUG3 |
9223 B 9223 B EPA Method 1604 9221 F 9222 G |
Enterococci |
Multiple Tube Technique Membrane Filter Technique Membrane Filter Technique Enterolert |
9230 B 9230 C EPA Method 1600 |
Coliphage |
Two-Step Enrichment Presence-Absence Procedure Single Agar Layer Procedure |
EPA Method 1601 EPA Method 1602 |
*The methods referenced in this section are incorporated by reference and can be obtained as follows:
The methods are also available for review at the Indiana Department of Environmental Management, Office of Legal Counsel, Indiana Government Center North, 100 North Senate Avenue, [sic] Thirteenth Floor, Indianapolis, Indiana 46204.
Notes
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