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Today I officially received notice that I passed the 2026 ASPE Certified Plumbing Designer (CPD) exam. I want to sincerely thank ASPE, the Credentialing Committee, and the many professionals who encouraged and helped me throughout the process. ...

Good day, Gentlemen. Where can one find information on the design and operation of Air-lift Pumps for pumping sewage, particularly in determining the air flow requirements? I have used the Ingersol-Rand formula and compared the air flow with that given ...

Hayden I know over the years I've said this several times. My experience with POU mixing valves on outbreak investigations, like with automatic (electronic) hand wash valves, is not good. At one outbreak location they had 160F hot water to the ...