Water Quality Association

Water Treatment For Dummies

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27 Microbial regulations The USEPA's Surface Water Treatment rule focuses on pathogens or disease-causing microorganisms in drinking water. Under this rule, a public water system must have treat- ment sufficient to reduce water concentra- tions of Giardia and other pathogens. The ruling sets limits on disinfectant residuals and turbidity, which is water discoloration or cloudiness from the particles suspended in water. The USEPA's list was later expanded to include Cryptosporidium and other harmful microorganisms in water, and acceptable levels of disinfection byproducts were lowered. These materials are the copyright of John Wiley & Sons, Inc. and any dissemination, distribution, or unauthorized use is strictly prohibited.

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