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§141.134 Reporting and recordkeeping requirements.
(a) Systems required to sample quarterly or more frequently must report to the State within 10 days after the end of each quarter in which samples were collected, notwithstanding the provisions of §141.31. Systems required to sample less frequently than quarterly must report to the State within 10 days after the end of each monitoring period in which samples were collected.
(b) Disinfection byproducts. Systems must report the information specified in the following table:
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If you are a * * * You must report * * *
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(1) System monitoring for TTHMs and (i) The number of samples taken
HAA5 under the requirements of § during the last quarter.
141.132(b) on a quarterly or more (ii) The location, date, and
frequent basis. result of each sample taken
during the last quarter.
(iii) The arithmetic average of
all samples taken in the last
quarter.
(iv) The annual arithmetic
average of the quarterly
arithmetic averages of this
section for the last four
quarters.
(v) Whether, based on §
141.133(b)(1), the MCL was
violated.
(2) System monitoring for TTHMs and (i) The number of samples taken
HAA5 under the requirements of § during the last year.
141.132(b) less frequently than (ii) The location, date, and
quarterly (but as least annually). result of each sample taken
during the last monitoring
period.
(iii) The arithmetic average of
all samples taken over the
last year.
(iv) Whether, based on §
141.133(b)(1), the MCL was
violated.
(3) System monitoring for TTHMs and (i) The location, date, and
HAA5 under the requriements of § result of each sample taken
141.132(b) less frequently than (ii) Whether, based on §
annually. 141.133(b)(1), the MCL was
violated.
(4) System monitoring for chlorite (i) The number of entry point
under the requirements of § samples taken each month for
141.132(b). the last 3 months.
(ii) The location, date, and
result of each sample (both
entry point and distribution
system) taken during the last
quarter.
(iii) For each month in the
reporting period, the
arithmetic average of all
samples taken in each three
samples set taken in the
distribution system.
(iv) Whether, based on §
141.133(b)(3), the MCL was
violated, in which month, and
how many times it was violated
each month.
(5) System monitoring for bromate under (i)The number of samples taken
the requirements of § 141.132(b). during the last quarter.
(ii)The location, date, and
result of each sample taken
during the last quarter.
(iii) The arithmetic average of
the monthly arithmetic
averages of all samples taken
in the last year.
(iv) Whether, based on §
141.133(b)(2), the MCL was
violated.
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\1\ The State may choose to perform calculations and determine whether
the MCL was exceeded, in lieu of having the system report that
information
(c) Disinfectants. Systems must report the information specified in the following table:
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If you are a * * * You must report * * *
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(1) System monitoring for chlorine or (i) The number of samples taken
chloramines under the requirements of during each month of the last
§ 141.132(c). quarter.
(ii) The month arithmetic
average of all samples taken
in each month for the last 12
months.
(iii) The arithmetic average of
the monthly averages for the
last 12 months.
(iv) Whether, based on §
141.133(c)(1), the MRD was
violated.
(2) System monitoring for chlorine (i) The dates, result, and
dioxide under the requirements of locations of samples taken
§ 141.132(c). during the last quarter.
(ii) Whether, based on §
141.133(c)(2), the MRDL was
violated.
(iii) Whether the MRDL was
exceeded in any two
consecutive daily samples and
whether the resulting
violation was acuate or
nonacute.
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\1\ The State may choose to perform calculations and determine whether
the MRDL was exceeded, in lieu of having the system report that
information.
(d) Disinfection byproduct precursors and enhanced coagulation or enhanced softening. Systems must report the information specified in the following table:
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If you are a... You must report...\1\
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(1) System monitoring monthly or (i) The number of paired
quarterly for TOC under the (source water and treated
requirements of § 141.132(d) and water) samples taken during
required to meet the enhanced the last quarter.
coagulation or enhanced softening (ii) The location, date, and
requirements in § 141.135(b)(2) results of each paired sample
or (3). and associated alkalinity
taken during the last quarter.
(iii) For each month in the
reporting period that paired
samples were taken, the
arithmetic average of the
percent reduction of TOC for
each paired sample and the
required TOC percent removal.
(iv) Calculations for
determining compliance with
the TOC percent removal
requirements, as provided in
§ 141.135(c)(1).
(v) Whether the system is in
compliance with the enhanced
coagulation or enhanced
softening percent removal
requirements in §
141.135(b) for the last four
quarters.
(2) System monitoring monthly or (i) The alternative compliance
quarterly for TOC under the criterion that the system is
requirements of § 141.132(d) and using.
meeting one or more of the alternative
compliance criteria in §
141.135(a)(2) or (3).
(ii) The number of paired
samples taken during the last
quarter.
(iii) The location, date, and
result of each paired sample
and associated alkalinity
taken during the last quarter.
(iv) The running annual
arithmetic average based on
monthly averages (or quarterly
samples) of source water TOC
for systems meeting a
criterion in §§
141.135(a)(2)(i) or (iii) or
of treated water TOC for
systems meeting the criterion
in § 141.135(a)(2)(ii).
(v) The running annual
arithmetic average based on
monthly averages (or quarterly
samples) of source water SUVA
for systems meeting the
criterion in §
141.135(a)(2)(v) or of treated
water SUVA for systems meeting
the criterion in §
141.135(a)(2)(vi).
(vi) The running annual average
of source water alkalinity for
systems meeting the criterion
in § 141.135(a)(2)(iii)
and of treated water
alkalinity for systems meeting
the criterion in §
141.135(a)(3)(i).
(vii) The running annual
average for both TTHM and HAA5
for systems meeting the
criterion in §
141.135(a)(2)(iii) or (iv).
(viii) The running annual
average of the amount of
magnesium hardness removal (as
CaCO[INF]3[/INF], in mg/L) for
systems meeting the criterion
in § 141.135(a)(3)(ii).
(ix) Whether the system is in
compliance with the particular
alternative compliance
criterion in §
141.135(a)(2) or (3).
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\1\ The State may choose to perform calculations and determine whether
the treatment technique was met, in lieu of having the system report
that information.
[63 FR 69466, Dec. 16, 1998, as amended at 66 FR 3778, Jan. 16, 2001;
66 FR 9903, Feb. 12, 2001]