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pdws@tceq.texas.gov
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Public Water System Monitoring Plans

How to comply with requirements for monitoring plans for public water systems in Texas.

As per 30 TAC 290.121, all public water systems are required to develop a monitoring plan, including all community, transient and non-transient water systems. The plans are a system-specific document which demonstrates that the water quality monitoring performed by the system is representative of the water distributed to consumers and is consistent with regulatory requirements..

Systems that treat surface water or groundwater under the direct influence of surface water (GUI) are required to send a copy of their monitoring plan to the TCEQ for review and approval. A copy of the plan should be kept at each treatment plant, as well as a central location.

Systems that use groundwater or purchased water are not required to send a copy of the monitoring plan to TCEQ, but must keep the plan on file for review by the TCEQ inspector during routine comprehensive compliance investigations (sanitary survey), or must provide a copy of the plan to TCEQ upon request. A copy of the plan should be kept at each treatment plant, as well as a central location.

Submittal to TCEQ

Submit one (1) copy of the complete Monitoring Plan to:

Texas Commission on Environmental Quality
Attn: Monitoring Plan Coordinator
Public Drinking Water Section, Mail Code 155
P.O. Box 13087
Austin, TX 78711-3087
Fax: (512) 239-6050

Revisions

Water systems are required to submit any changes related to the Monitoring Plan to the TCEQ within thirty (30) calendar days following the effective date of the change. Revision may be submitted separately, if only one part of the plan is affected by the change.

A detailed guidance is available to help you develop your monitoring plan.

 

Drinking Water Lab Approval Form

Water systems must submit a Drinking Water Lab Approval Form as part of the monitoring plan. Approved lab analytes include: Turbidity, pH, temperature, TOC, UV254, Alkalinity, Free Chlorine, total Chlorine, Chlorine Dioxide, Chlorite (at entry point), Calcium, Orthophosphate, Conductivity and Silica. Each system that analyzes one or more of the approved lab analytes to determine compliance with the treatment technique requirements and maximum residual disinfectant levels is considered to be a laboratory.

Approval Methods

An EPA approved method must be used.  Fill out the method you use to measure each analyte (for example: Standard Method Cl-4500D). If you use an analyzer, include this on the form as well (for example: Hach 1720D). For a list of approved methods, see Table 1 on the lab approval form for reference.

Commercial Labs

A commercial lab is a lab that performs any of the analytes included under laboratory approval for a fee. Commercial labs must be approved in order to run approved analyses for a PWS.

Drinking Water Laboratory Approval Form pdf.gif

Submittal to TCEQ

Include a copy of the Drinking Water Lab Approval with your Monitoring Plan or submit directly to:

Texas Commission on Environmental Quality
Attn: Laboratory Approval Coordinator
Public Drinking Water Section, Mail Code 155
P.O. Box 13087
Austin, TX 78711-3087
Fax: (512) 239-6050