Wisconsin Administrative Code
Department of Natural Resources
NR 800 - Environmental Protection - Water Supply
Chapter NR 809 - Safe Drinking Water
Subchapter I - Maximum Contaminant Levels, Monitoring and Analytical Requirements for Primary Drinking Water Contaminants
Section NR 809.336 - Reporting source water monitoring results

Universal Citation: WI Admin Code § NR 809.336

Current through August 26, 2024

(1) Water suppliers shall report results from the source water monitoring required under s. NR 809.331(1) and (2) no later than 10 days after the end of the first month following the month when the sample is collected.

(a) All water suppliers for public water systems serving at least 10,000 people shall report the results from the initial source water monitoring required under s. NR 809.331(1) to EPA.

(b) If a water supplier is unable to report monitoring results electronically, the water supplier may use an alternative approach for reporting monitoring results that EPA approves.

(2) Water suppliers for public water systems serving fewer than 10,000 people shall report results from the initial source water monitoring required under s. NR 809.331(1) to the department.

(3) All water suppliers shall report results from the second round of source water monitoring required under s. NR 809.331(2) to the department.

(4) Water suppliers shall report the applicable information in pars. (a) and (b) for the source water monitoring required under s. NR 809.331(1) and (2).

(a) Water suppliers shall report the following data elements for each Cryptosporidium analysis:

Data element.

1. PWS ID.

2. Facility ID.

3. Sample collection date.

4. Sample type (field or matrix spike).

5. Sample volume filtered (L), to nearest 1/4 L.

6. Was 100% of filtered volume examined.

7. Number of oocysts counted.

1. For matrix spike samples, water suppliers shall also report the sample volume spiked and estimated number of oocysts spiked. These data are not required for field samples.

2. For samples in which less than 10 L is filtered or less than 100% of the sample volume is examined, water suppliers shall also report the number of filters used and the packed pellet volume.

3. For samples in which less than 100% of sample volume is examined, water suppliers shall also report the volume of resuspended concentrate and volume of this resuspension processed through immunomagnetic separation.

(b) Water suppliers shall report the following data elements for each E. coli analysis:

Data element.

1. PWS ID.

2. Facility ID.

3. Sample collection date.

4. Analytical method number.

5. Method type.

6. Source type (flowing stream, lake/reservoir, GWUDI).

7. E. coli /100 mL.

8. Turbidity.

(c) Water suppliers for public water systems serving fewer than 10,000 people that are not required to monitor for turbidity under s. NR 809.331(1) and (2) are not required to report turbidity with their E. coli results.

Disclaimer: These regulations may not be the most recent version. Wisconsin may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.

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