Current through Register No. 13, March 27, 2025
(a) Except where a
shorter period is specified, a system owner who is required to sample quarterly
or more frequently than quarterly under this part shall report sample results
to the department within 10 days after the end of each quarter in which samples
were collected on forms provided by the department.
(b) A system owner who is required to sample
under this part less frequently than quarterly shall report sample results to
the department within 10 days after the end of each monitoring period in which
samples were collected on forms provided by the department.
(c) A system owner required to monitor for
TTHM and HAA5 pursuant to
Env-Ws
382.08 on a quarterly or more frequent basis shall
report the following to the department:
(1)
The number of samples collected during the last quarter;
(2) The location, date, and result of each
sample collected during the last quarter;
(3) The average of all samples collected
during the last quarter;
(4) The
annual average of the quarterly averages for the last 4 quarters; and
(5) Whether the MCL was violated as
calculated in Env-Ws 382.16.
(d) A system owner monitoring for
TTHMs and HAA5 pursuant to
Env-Ws
382.08 and
Env-Ws
382.09 less frequently than quarterly, but at least
annually, shall report the following to the department:
(1) The number of samples collected during
the last year;
(2) The location,
date, and result of each sample collected during the last monitoring
period;
(3) The average of all
samples collected during the last year; and
(4) Whether the MCL was violated as
calculated in Env-Ws 382.16.
(e) A system owner monitoring for
TTHMs and HAA5 pursuant to
Env-Ws
382.08 and
Env-Ws
382.09 less frequently than annually shall report the
following to the department:
(1) The location,
date, and result of each sample collected; and
(2) Whether the MCL was violated as
calculated in Env-Ws 382.16.
(f) A system owner monitoring for
chlorite pursuant to Env-Ws 382.10 shall report the
following:
(1) The number of entry point
samples collected each month for the last 3 months;
(2) The location, date, and result of each
sample collected at the entry point and distribution system during the last
quarter;
(3) For each month in the
reporting period, the average of all samples collected in each 3-sample set
collected in the distribution system;
(4) Whether the system was in violation of
the MCL as specified in
Env-Ws
382.18;
(5) If the system in (4) above, was in
violation, the month the system was in violation; and
(6) How many times the violation occurred
during each month the system was in violation.
(g) A system owner monitoring for bromate
pursuant to Env-Ws 382.11 shall report the
following to the department:
(1) The number
of samples collected during the last quarter;
(2) The location, date, and result of each
sample collected during the last quarter;
(3) The average of the monthly averages of
all samples collected in the last year; and
(4) Whether the MCL was violated as specified
in Env-Ws
382.17.
(h) A system owner monitoring for chlorine or
chloramines pursuant to
Env-Ws
382.12 shall report the following to the department:
(1) The number of samples collected during
each month of the last quarter;
(2)
The monthly average of all samples collected in each month for the last 12
months;
(3) The average of the
monthly averages for the last 12 months; and
(4) Whether the MRDL was violated as
specified in Env-Ws 382.19.
(i) A system owner monitoring for
chlorine dioxide pursuant to
Env-Ws
382.12 shall report the following to the department:
(1) The dates, results, and locations of
samples collected during the last quarter;
(2) Whether the MRDL was violated as
specified in Env-Ws 382.19;
(3) Whether the MRDL was exceeded in any 2
consecutive daily samples; and
(4)
Whether the resulting violation was acute or non-acute as specified in
Env-Ws
382.19.
(j) A system owner monitoring monthly or
quarterly for TOC under the requirements of
Env-Ws
382.13 and required to meet the enhanced coagulation
or enhanced softening requirements of
Env-Ws
382.23 shall report the following to the department:
(1) The number of paired samples collected
during the last quarter;
(2) The
location, date, and results of each paired sample and associated alkalinity
collected during the last quarter;
(3) For each month in the reporting period
that paired samples were collected:
a. The
average of the percent reduction of TOC for each paired sample; and
b. The required TOC percent
removal;
(4)
Calculations for determining compliance with the TOC percent removal
requirements, as provided in
Env-Ws
382.25; and
(5) Whether the system is in compliance with
the enhanced coagulation or enhanced softening percent removal requirements of
Env-Ws
382.23 for the last 4 quarters.
(k) A system owner monitoring monthly or
quarterly for TOC under the requirements of
Env-Ws
382.13 and meeting one or more of the alternative
compliance, Step 2 criteria specified in
Env-Ws
382.24 shall report the following to the department:
(1) The alternative compliance criterion that
the system is using;
(2) The number
of paired samples collected during the last quarter;
(3) The location, date, and result of each
paired sample and associated alkalinity collected during the last
quarter;
(4) The running annual
average based on:
a. Monthly averages or
quarterly samples of source water TOC for a system meeting a criterion in
Env-Ws
382.22(b)(1) and (3); or
b. Monthly averages or quarterly samples of
treated water TOC for a system meeting the criteria in
Env-Ws
382.22(b)(2);
(5) The running annual average based on:
a. Monthly averages or quarterly samples of
source water SUVA for a system meeting the criteria in
Env-Ws
382.22(b)(5); or
b. Monthly averages or quarterly samples of
treated water SUVA for systems meeting the criterion in
Env-Ws
382.22(b)(6);
(6) The running annual average of:
a. Source water alkalinity for a system
meeting the criteria in
Env-Ws
382.22(b)(7); and
b. Treated water alkalinity for systems
meeting the criteria in
Env-Ws
382.22(g)(1);
(7) The running annual average for TTHM and
HAA5 for systems meeting the criteria in
Env-Ws
382.22(b)(4);
(8) The running annual average of the amount
of magnesium hardness removal as CaCO3, in mg/L, for
systems meeting the criterion in
Env-Ws
382.22(g)(2); and
(9) Whether the system is in compliance with
the particular alternative compliance criterion in
Env-Ws
382.22(b) or (g).
(See third Revision Note at chapter heading Env-Ws 300);
#7735, eff 8-2-02