Wastewater operator continuing education

Disinfection 2: What the Dose Actually Buys

Pending state approval in Illinois (Pending)

Changing chlorine dose without understanding contact time and residual levels can lead to missed disinfection targets or wasted chemicals. This hour shows how to read your plant's data, weigh trade-offs, and make smarter dose decisions that protect performance and cut costs.

Course summary, as it appears on your certificate

To deepen operator understanding of the implications of disinfection dose changes on plant performance, compliance, and operational trade-offs, building from Level 1 knowledge of terms and process modes.

We can't sell this in Illinois yet. Tell us where you are and we'll email you the day it opens — nothing else, and one click to stop. Tell me when it opens

Level 2 — what each change does to the plant — effluent, efficiency, sludge and energy — assumes Level 1

Credit awarded: 1 hour — Technical

The Illinois course number is issued by the Agency for this course and is printed on your certificate.

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

What's included

  • Self-paced online coursework you can start, pause, and resume anytime
  • Short questions along the way, and a short final quiz to pass for your certificate (retake it as often as you need)
  • 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 74 minutes of video · 1 hour