NR 809.334 History History: CR 09-073: cr. Register November 2010 No. 659, eff. 12-1-10; CR 15-049: am. (1), (2) (intro.), r. and recr. (2) Table I Register March 2016 No. 723, eff. 4-1-16.

NR 809.335 NR 809.335 Approved laboratories for surface water source monitoring.

NR 809.335(1) (1) Cryptosporidium. Water suppliers shall have Cryptosporidium samples analyzed by a laboratory that is approved under EPA’s Laboratory Quality Assurance Evaluation Program for Analysis of Cryptosporidium in Water or a laboratory that has been certified for Cryptosporidium analysis by an equivalent department laboratory certification program.

NR 809.335(2) (2) E. coli. Any laboratory certified by the EPA, The NELAC Institute (TNI), or the department of agriculture, trade and consumer protection for total coliform or E. coli. analysis under s. NR 809.323 (1) (c), Table F is approved for E. coli analysis under this section when the laboratory uses the same technique for E. coli that the laboratory uses for s. NR 809.334 (2), Table I.

NR 809.335(3) (3) Turbidity. Measurements of turbidity shall be made by a party approved by the department.

NR 809.335 History History: CR 09-073: cr. Register November 2010 No. 659, eff. 12-1-10; CR 15-049: am. (2) Register March 2016 No. 723, eff. 4-1-16.

NR 809.336 NR 809.336 Reporting source water monitoring results.

NR 809.336(1) (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.

NR 809.336(1)(a) (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.

NR 809.336(1)(b) (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.

NR 809.336(2) (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.

NR 809.336(3) (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.

NR 809.336(4) (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).

NR 809.336(4)(a) (a) Water suppliers shall report the following data elements for each Cryptosporidium analysis:

- See PDF for table

NR 809.336(4)(a)1. 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.

NR 809.336(4)(a)2. 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.

NR 809.336(4)(a)3. 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.

NR 809.336(4)(b) (b) Water suppliers shall report the following data elements for each E. coli analysis:

- See PDF for table

NR 809.336(4)(c) (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.

NR 809.336 History History: CR 09-073: cr. Register November 2010 No. 659, eff. 12-1-10; correction in (1) (a) made under s. 13.92 (4) (b) 6., Stats., Register January 2013 No. 685; CR 15-049: am. (4) (b) Register March 2016 No. 723, eff. 4-1-16.

NR 809.35 NR 809.35 Sanitary survey requirements for all public water systems.

NR 809.35(1) (1) Sanitary surveys.

NR 809.35(1)(a) (a) Community water systems shall undergo a sanitary survey every 3 years, unless the public water system meets the requirements of sub. (2) for outstanding performance of a public water system, then a sanitary survey may be conducted every 5 years.

NR 809.35(1)(b) (b) Non-community water systems shall undergo a sanitary survey every 5 years.

NR 809.35(1)(c) (c) The department will review the results of each sanitary survey to determine whether the existing monitoring frequency is adequate and what additional measures, if any, the water supplier needs to undertake to improve drinking water quality.

NR 809.35(1)(d) (d) Sanitary surveys shall be performed by the department or an agent approved by the department. If the department requests a water supplier to have a sanitary survey performed, the water supplier is responsible for ensuring the survey is completed.

NR 809.35(2) (2) Outstanding performance.