Current through August 26, 2024
(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.
