Residual Disinfectant Reporting for Public Water Systems

All community and nontransient noncommunity public water systems (PWSs) that use only purchased water or groundwater must regularly monitor the level of disinfectant in the distribution system and use the DLQOR form to report this information to the TCEQ quarterly.

 Improved DLQOR Form Now Available (Dec. 2006)

The Disinfectant Level Quarterly Operating Report (DLQOR) is now available as a fill-in-the-blank PDF file. This PDF file:

• comes with simple, one-page instructions for completing your DLQOR
• is very easy to use
• reminds you if you forget to fill out any fields
• automatically calculates percentage of samples with a low residual
• can be e-mailed to us (You still have to send us a paper copy, but if the e-mail reaches us by the deadline it’s OK for the paper copy to arrive late.)

Other Formats Still Available

If you can’t easily use PDF, this DLQOR form is also available in Word and Excel—but these versions don’t have all the features of the new PDF and can’t be submitted by e-mail.

RG-407, Disinfectant Reporting for Public Water Systems, has also been revised.

Who Should Not Use DLQORs

If your PWS treats surface water or groundwater under the direct influence of surface water (GUI), do not use this form. Instead, you must submit Surface Water Monthly Operating Reports (SWMORs).

Forms and Worksheets

• Disinfectant Level Quarterly Operating Report (DLQOR):
  PDF New! Improved!
  If you do not have Acrobat Reader 7.0, you may use one of these formats: Excel · Word
• Important: Be sure to complete all fields, including your PWS ID number, when you fill out the DLQOR form. If your forms are not complete when we receive them, you might not receive proper credit—instead, you could receive a violation.
• Disinfectant Residual Worksheet:
  • for PWSs with fewer than 750 customers:
    PDF · Word
  • for PWSs with 750–4900 customers:
    PDF · Word
  • for PWSs that collect samples daily:
    PDF · Word
  • for PWSs that collect these samples with their coliform samples:
    PDF · Word