Water treatment knowledge from the Association of Water Technologies, in one searchable place: every article of The Analyst since 1989, plus technical papers and guides from AWT committees. Nearly a thousand pages, and growing.
🔑 Log in with your AWT member credentials. Use the Login button in the top-right corner of the page to sign in with the same username and password you use for AWT membership. Members can open everything here, including the original PDF of every article.
⚠️ Read with the date in mind, and double-check. Laws, regulations and technology change over time. Each article states the year it was written, and some of it may be out of date. The Knowledge Hub collects AWT content from many authors over more than thirty years, so pages can disagree with one another. Verify anything you rely on against current regulations and sources. More on this
¶ Find what you need
Use the search box at the top of any page. Try a subject (biofilm, silica), a chemical, or an author's name.
Every article grouped by subject: boilers, cooling towers, closed loops and more.
Browse the magazine issue by issue, from 1989 to today.
Sample CWT exam questions with answers, from *The Analyst*.
¶ Browse by subject
Feedwater and makeup, deaeration, internal treatment, condensate return, chemical cleaning.
Scale, corrosion and fouling control, biocides, tower operation and optimization.
Chilled and hot water systems, glycol, inhibitor programs.
Makeup water treatment: ion exchange, softening, demineralization, membranes.
Metals removal, discharge limits, effluent treatment, water reuse.
Biocides, biofilm, Legionella and other waterborne pathogens.
Drinking water quality and distribution, lead and copper corrosion control.
EPA, OSHA and other regulation affecting water treatment companies.
Running a water treatment company: risk, contracts, finance, people.
Step-by-step field guides from the AWT Education Resource Committee.
¶ Latest from The Analyst
¶ Good to know
- The original is one click away. Each Analyst article opens with a link to the original PDF, with all its figures and photographs, and a ready-made citation.
- Tags connect related pages. The tags at the bottom of a page list other pages on the same subject or from the same issue.
- Something look wrong? Pages were converted with the help of AI and have not been proofread line by line, so a figure may be out of place or a table may not have carried over. Use the Report it to the committee link on the page. How the Knowledge Hub was prepared