Experts with proven knowledge
They have passed a rigorous exam that covers all aspects of water treatment technology, and they must recertify every five years.
Certification
CWT: the highest credential in water treatment.
The Certified Water Technologist (CWT) program assures that water professionals possess a core body of knowledge and have extensive professional experience in all aspects of water treatment.
The value of certification
Certified Water Technologists are…
CWTs pride themselves on making facilities as efficient as possible using the latest water treatment technology and techniques to save energy.
Experienced and reputable
They have been employed as a water treatment professional for a minimum of five years, and have passed a thorough peer-review process.
Ethical and responsible
They have signed a 13-part Declaration of Ethics. Violations result in disciplinary action, including revocation of certification.
The value to you
- Proof of your knowledge and skills — you’ve passed a rigorous exam.
- Proof of your commitment — CWTs recertify every five years.
- Career advancement — opportunities throughout the industry.
The value to water treatment companies
- Increased credibility with clients.
- Marketing opportunities that set you apart.
- A motivational tool for employees.
- Liability insurance discounts from some insurers that recognize the CWT.
Become certified
Your path to the CWT
- 1
Gain experience
A minimum of five years acceptable field experience in the water treatment industry.
- 2
Pass the CWT exam
See the Exam Candidate Handbook (revised October 2026).
- 3
Apply within one year
Complete and submit the application form and references. A CWT Committee member reviews your application and contacts your references; results arrive within four weeks.
- 4
Recertify every five years
Accrue 25 CEUs within a five-year period, or retake and pass the CWT exam.
Questions? Contact Jeff Greenwald at help@awt.org.
Source: awt.org/become-certified/
Recertify
Earn 25 CEUs in five years
A critical part of being certified is maintaining your knowledge and skills. There are many ways to accumulate the required credits.
| Activity | Credit |
|---|---|
| AWT Annual Convention | 5 CEUs |
| AWT Technical Training Seminar | 15 CEUs |
| Free AWT webinars | Members only |
| Quizzes on technical articles | Online |
| IWC, CTI, ASHRAE, ASHI or NACE conventions | Eligible |
| Related seminars & workshops (RO, boiler, cooling tower, NACE corrosion…) | Eligible |
| Publishing a technical article or presenting a paper | Eligible |
| Related college courses or a U.S. patent in water/wastewater treatment | Eligible |
Source: awt.org/recertify/
AWT membership is an investment in your company’s success.
From the education you receive, to the business contacts you make, to the discount programs that help you save money — every AWT member benefit helps to grow your business.