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POTW Nutrient Survey

""Screener Questionnaire

Open Now!

EPA's voluntary screener questionnaire collecting basic information from U.S. secondary treatment facilities is now available. The initial collection completed on November 26, 2019. EPA is continuing to accept late submissions—please submit your surveys as soon as possible.

To respond to the online survey, please register your POTW using its NPDES ID at the link below:


If you would like to review a copy of the survey and gather information before submitting your responses online, you can download a sample copy.

Nutrient Survey Response Rate

We appreciate your participation

If you have any questions about this questionnaire, are unable to register your POTW, or need other assistance, please contact the EPA POTW Screener Questionnaire Helpline:

  • Call 703-633-1696, or toll-free 877-353-7560
  • Email: