Fix library · Records citation

30 TAC §290.110(e): disinfectant level reports

Water systems report their disinfectant test results. Systems on ground water or bought water file a Disinfection Level Quarterly Operating Report. Community and non-transient non-community systems send it in by the tenth day of the month after each quarter ends.

What the rule says

Quoted word for word from the Texas Administrative Code, Title 30, as published by the Texas Secretary of State. Read on 10/30/2026.

30 TAC §290.110(e)

(e) Reporting requirements. Any owner or operator of a public water system subject to the provisions of this section is required to report to the executive director the results of any test, measurement, or analysis required by this section.

30 TAC §290.110(e)(4)

(4) Public water systems that use purchased water or groundwater sources only must complete a Disinfection Level Quarterly Operating Report (commission Form 20067) each quarter. (A) Community and nontransient, noncommunity public water systems must submit the Disinfection Level Quarterly Operating Report each quarter, by the tenth day of the month following the end of the quarter. (B) Transient, noncommunity public water systems must retain the Disinfection Level Quarterly Operating Reports and must provide a copy if requested by the executive director.

30 TAC §290.110(e)(6)

(6) Monthly and quarterly reports required by this section must be submitted to the Water Supply Division, MC 155, Texas Commission on Environmental Quality, P.O. Box 13087, Austin, Texas 78711-3087 by the tenth day of the month following the end of the reporting period.

Full text: 30 TAC §290.110 (Disinfectant Residuals)

What proof usually looks like

Your letter sets what to show and by when. Match each item on it to records like these:

• The quarterly report for each quarter, filled in.
• Proof of the date each report was sent.
• The disinfectant test results the report is built from.
• For transient non-community systems: the reports kept on file, ready if the state asks.

Common mistakes

• A quarter skipped.
• A report sent after the tenth day of the month after the quarter.
• Test results taken but never put on the report.
• Using the wrong form for the kind of water source.

Got a letter that cites this rule?

NOV Fixer rebuilds the paperwork: a plain-words read of your letter, the logs and forms filled in from your records, a cover letter for you to sign, and a dated checklist of what proves the fix.

Enter the code from your letter

No code? Write to [email protected].

This page explains a rule in plain words. It is not legal advice. When this page and the rule differ, the rule controls.