Section 809.332. Sampling schedules for surface water source water monitoring.

 

(1)   Sampling schedules. Water suppliers for public water systems required to conduct source water monitoring under s. NR 809.331 shall submit a sampling schedule that specifies the calendar dates when the water supplier will collect each required sample.

(a) Water suppliers shall submit sampling schedules no later than 3 months prior to the applicable date listed in s. NR 809.331 (3) , Table H, for each round of required monitoring.

(b) Water suppliers for public water systems serving at least 10,000 people shall submit their sampling schedule for the initial round of source water monitoring under s. NR 809.331 (1) to EPA . If a water supplier is unable to submit the sampling schedule electronically, the water supplier may use an alternative approach for submitting the sampling schedule subject to EPA approval.

(c) Water suppliers for public water systems serving fewer than 10,000 people shall submit their sampling schedules for the initial round of source water monitoring under s. NR 809.331 (1) to the EPA or the department.

(d) Water suppliers shall submit sampling schedules for the second round of source water monitoring under s. NR 809.331 (2) to the department.

(e) If EPA or the department does not respond to a water supplier regarding its sampling schedule, the water supplier shall sample at the reported schedule.

(2)   Sample collection. Water suppliers shall collect samples no later than two days before or two days later than the dates indicated in their sampling schedule. Thus samples shall be collected within a five-day period around the scheduled date, unless one of the conditions of par. (a) or (b) applies.

(a) If an extreme condition or situation exists that may pose danger to the sample collector, or that cannot be avoided and causes the water supplier to be unable to sample in the scheduled five-day period, the water supplier shall sample as close to the scheduled date as feasible unless the department approves an alternative sampling date. The water supplier shall submit an explanation for the delayed sampling date to the department concurrent with the shipment of the sample to the laboratory.

(b) If a water supplier is unable to report a valid analytical result for a scheduled sampling date due to equipment failure, loss of or damage to the sample, failure to comply with the analytical method requirements, including the quality control requirements in s. NR 809.334 , or the failure of an approved laboratory to analyze the sample, then the water supplier shall collect a replacement sample. The water supplier shall collect the replacement sample no later than 21 days after receiving information that an analytical result cannot be reported for the scheduled date unless the water supplier demonstrates that collecting a replacement sample within this time frame is not feasible or the department approves an alternative resampling date. The water supplier shall submit an explanation for the delayed sampling date to the department concurrent with the shipment of the sample to the laboratory.

(3)   Revising sampling schedules. Water supplier for public water systems that fail to meet the criteria of sub. (2) for any source water sample required under s. NR 809.331 shall revise their sampling schedules to add dates for collecting all missed samples. The water supplier shall submit the revised schedule to the department for approval before the water supplier begins collecting the missed samples.

CR 09-073 : cr. Register November 2010 No. 659 , eff. 12-1-10; correction in (1) (b) made under s. 13.92 (4) (b) 6. , Stats., Register January 2013 No. 685 .