Log In

Newsletter

Subscribe to receive the latest test taking tips, practice questions, math hints, and Water Distribution Operator news.

Updates

  • 01-27-15
    NEW Added 100 question practice test which shows answers immediately, instead of at the end.
  • 11-10-14
    Complete redesign of website to match our Water Distribution Certification website. Also, working on new content to be added soon.

Glossary of Terms

Aerobic - The condition in which free oxygen is dissolved in the water. Aerobic bacteria need free dissolved oxygen to live and multiply.

Quick Facts

One gallon of water weighs approximately 8.34 pounds.
s2Member®