(a) Applicability. All public water systems shall maintain
an up-to-date chemical and microbiological monitoring plan. Monitoring
plans are subject to the review and approval of the executive director.
A copy of the monitoring plan must be maintained at each water treatment
plant and at a central location.
(b) Monitoring plan requirements. The monitoring plan
shall identify all sampling locations, describe the sampling frequency,
and specify the analytical procedures and laboratories that the public
water system will use to comply with the monitoring requirements of
this subchapter.
(1) The monitoring plan shall include information on
the location of all required sampling points in the system. Required
sampling locations for regulated chemicals are provided in §290.106
of this title (relating to Inorganic Contaminants), §290.107
of this title (relating to Organic Contaminants), §290.108 of
this title (relating to Radionuclides Other than Radon), §290.109
of this title (relating to Microbial Contaminants), §290.110
of this title (relating to Disinfectant Residuals), §290.111
of this title (relating to Surface Water Treatment), §290.112
of this title (relating to Total Organic Carbon (TOC)), §290.113
of this title (relating to Stage 1 Disinfection Byproducts (TTHM and
HAA5)), §290.114 of this title (relating to Other Disinfection
Byproducts (Chlorite and Bromate)), §290.115 of this title (relating
to Stage 2 Disinfection Byproducts (TTHM and HAA5)), §290.116
of this title (Relating to Groundwater Corrective Actions and Treatment
Techniques), §290.117 of this title (relating to Regulation of
Lead and Copper), and §290.118 of this title (relating to Secondary
Constituent Levels).
(A) The location of each sampling site at a treatment
plant or pump station must be designated on a plant schematic. The
plant schematic must show all water pumps, flow meters, unit processes,
chemical feed points, and chemical monitoring points. The plant schematic
must also show the origin of any flow stream that is recycled at the
treatment plant, any pretreatment that occurs before the recycle stream
is returned to the primary treatment process, and the location where
the recycle stream is reintroduced to the primary treatment process.
(B) Each entry point to the distribution system shall
be identified in the monitoring plan as follows:
(i) a written description of the physical location
of each entry point to the distribution system shall be provided;
or
(ii) the location of each entry point shall be indicated
clearly on a distribution system or treatment plant schematic.
(C) The address of each sampling site in the distribution
system shall be included in the monitoring plan or the location of
each distribution system sampling site shall be designated on a distribution
system schematic. The distribution system schematic shall clearly
indicate the following:
(i) the location of all pump stations in the distribution
system;
(ii) the location of all ground and elevated storage
tanks in the distribution system; and
(iii) the location of all chemical feed points in the
distribution system.
(D) The system must revise its monitoring plan if changes
to a plant or distribution system require changes to the sampling
locations.
(2) The monitoring plan must include a written description
of sampling frequency and schedule.
(A) The monitoring plan must include a list of all
routine samples required on a daily, weekly, monthly, quarterly, annual,
or less frequent basis and identify the sampling location where the
samples will be collected.
(B) The system must maintain a current record of the
sampling schedule.
(3) The monitoring plan shall include the public water
system's Sample Siting Plan as required by §290.109(d)(1) - (6)
of this title. The public water system's Sample Siting Plan shall
include a list of all microbial distribution compliance monitoring
sites as required by §290.109(d) of this title, including all
routine and repeat microbial sample sites. As required by §290.109(d)(2)(G)
of this title, a public water system that collects more than the minimum
number of required routine microbial samples shall include the additional
routine sample sites in the public water system's Sample Siting Plan.
In addition, a public water system that is required to collect any
associated raw groundwater source(s) compliance samples, as required
by §290.109(d)(4) of this title, shall include the microbial
raw groundwater well compliance sites in the public water system's
Sample Siting Plan. The repeat sample sites, as required by §290.109(d)(3)
of this title, shall be associated to their originating routine microbial
sample sites. The Sample Siting Plan shall include all groundwater
sources and any associated sampling points necessary to meet the requirements
of §290.109(d) of this title.
(4) The monitoring plan must identify the analytical
procedures that will be used to perform each of the required analyses.
(5) The monitoring plan must identify all laboratory
facilities that may be used to analyze samples required by this chapter.
(6) The monitoring plan shall include a written description
of the methods used to calculate compliance with all maximum contaminant
levels, maximum residual disinfectant levels, and treatment techniques
that apply to the system.
(7) The monitoring plan shall include any groundwater
source water monitoring plan developed under §290.109(d)(4) of
this title to specify well sampling for triggered coliform monitoring.
(8) The monitoring plan shall include any initial distribution
system evaluation compliance documentation required by §290.115(c)(5)
of this title. The monitoring plan must be revised to show Stage 2
sample sites by the date shown in Figure: 30 TAC §290.115(a)(2)
titled "Date to Start Stage 2 Compliance."
(9) The monitoring plan shall include any raw surface
water monitoring plan required under §290.111 of this title.
(c) Reporting requirements. All public water systems
shall maintain a copy of the current monitoring plan at each treatment
plant and at a central location. The water system must update the
monitoring plan when the water system's sampling requirements or protocols
change.
(1) Public water systems that treat surface water or
groundwater under the direct influence of surface water must submit
a copy of the monitoring plan to the executive director upon development
and revision.
(2) Public water systems that treat groundwater that
is not under the direct influence of surface water or purchase treated
water from a wholesaler must develop a monitoring plan and submit
a copy of the monitoring plan to the executive director upon request.
(3) All water systems must provide the executive director
with any revisions to the plan upon request.
(d) Compliance determination. Compliance with the requirements
of this section shall be determined using the following criteria.
(1) A public water system that fails to submit an administratively
complete monitoring plan by the required date documented in a request
from the executive director or fails to submit updates to a plan when
changes are made to a system's surface water treatment commits a reporting
violation.
(2) A public water system that fails to maintain an
up-to-date monitoring plan commits a monitoring violation.
(e) Public notification. A community system that commits
a violation described in subsection (d) of this section shall notify
its customers of the violation in the next Consumer Confidence Report
that is issued by the system.
|
Source Note: The provisions of this §290.121 adopted to be effective September 13, 2000, 25 TexReg 8880; amended to be effective May 16, 2002, 27 TexReg 4127; amended to be effective February 19, 2004, 29 TexReg 1373; amended to be effective December 23, 2004, 29 TexReg 11729; amended to be effective January 9, 2008, 33 TexReg 198; amended to be effective May 15, 2011, 36 TexReg 2860; amended to be effective March 30, 2017, 42 TexReg 1466 |