WATER MICROBIOLOGY LABORATORY EVALUATION FORM
State of Illinois
Illinois Department of Public Health
RECORD MAINTENANCE
1. Sample report forms include identification of sample origin, date, time and place of sampling, name of
sample collector, date and time of receipt and analysis, laboratory identification (name and certification
number), person(s) responsible for performing analyses, analytical method used and results of analysis
(465.420c).
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a. Drinking water results reported as present or absent for total coliform and E. coli for compliance with
the RTCR.
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b. Surface water results enumerated for E. coli for monitoring under LT2.
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c. Surface water results enumerated for total and fecal coliform for compliance with the SWTR for the
avoidance of filtration.
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d. Ground water results are reported for E. coli as present or absent for monitoring under the GWR.
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2. Sample report forms retained five years (465.420b).
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3. All required records in ink (465.420a).
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4. Any change lined through so that original entry is visible; changes initialed and dated; documentation
supporting all corrections on records shall be maintained (465.420a).
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ACTION RESPONSE TO LABORATORY RESULTS
1. Positive presumptive results on public water supply (PWS)samples reported to the PWS and to the state
regulatory agency that has jurisdiction over the PWS as preliminary (465.430a).
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2. Upon completion of tests, the adjusted results are reported to the PWS and to the state regulatory
agency that has jurisdiction over the PWS (465.430a).
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3. The public water supply and the state regulatory agency that has jurisdiction over the PWS are notified
of invalid sample results (465.430a).
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4. If any sample is positive for E. coli, the system shall notify the state regulatory agency and PWS by the
end of the day (465.430b).
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References:
Ill. Rules for the Certification and Operation of Environmental Laboratories, Title 77, Chapter I, Sec.465, Subchapter d.
Standard Methods for the Analysis of Water and Wastewater (SM), Edition as cited
EPA Manual for the Certification of Laboratories Analyzing Drinking Water, 5th Edition
EPA Manual for the Certification of Laboratories Analyzing Drinking Water, 5th Edition, Supplement 1
40 CFR 141,142, National Primary Drinking Water Regulations; Revisions to the Total Coliform Rule (RTCR)
40 CFR 141.70-141.75, National Drinking Water Regulations; Surface Water Treatment Rule (SWTR)
40 CFR 9, 141,142, National Primary Drinking Water Regulations: Long Term 2 Enhanced Surface Water Treatment
Rule
40 CFR 9, 141, 142 National Primary Drinking Water Regulations: Ground Water Rule (GWR)
QC = Records must be maintained
Printed by Authority of the State of Illinois
IOCI 15-301
P.O.#0515251
2M
11/14
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