Wastewater operator continuing education

The Four Design Flows and What Your Permit Uses

Approved for renewal credit in IL

To equip wastewater operators with a clear understanding of the four legally defined design flows per Illinois regulations, how these flows relate to their plant's hydraulic and organic loading capacities, and how their permits use these flows for compliance calculations. This course aims to correct common operator misconceptions and support confident permit interpretation and operational decision-making.

Level: Core — assumes you work in the field; develops the subject as a main topic

Credit awarded: 1 CEU hour — Technical

One hour of study is one hour of credit. Your certificate reports the hours, which is what IL records against your renewal.


What's included

  • Self-paced online coursework you can start, pause, and resume anytime
  • A short completion quiz to confirm your understanding
  • An official certificate of completion (PDF) with a public verification code
  • Progress saved to your My Learning dashboard
$19.00 USD

One-time payment · lifetime access to this course

About 69 minutes of video · 1 CEU hour

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Full refund within 7 days if you have not completed the course — refund policy.

Training a team? Buy seats for your operators — card or purchase order, with a completion record you can export.