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Treatment

Guidance on water treatment methods.

Topics Under this Category

Alternate Disinfectants: Standby Units and Spare Parts
This staff guidance document provides public water systems with information for water treatment plants using continuous disinfection to satisfy the Surface Water Treatment Rule by treating surface water or groundwater which is under the direct influence of surface water. These treatment plants must provide standby disinfection equipment to ensure uninterrupted operation.
Meeting Treatment Technique Requirements for Cryptosporidium, Giardia, and Viruses
This staff guidance document provides public water systems with information on pathogen-removal criteria when using Reverse Osmosis (RO) membranes to treat surface water, groundwater under the influence of surface water, or rain water.
Selection of Baffling Factors and Operating Conditions for T10 Calculations
This staff guidance document provides public water systems with information on the selection of baffling factors for the T10 calculation in a CT study. A CT study is an evaluation of a water treatment plant’s disinfection process based on the concentration (C) of the disinfectant and the theoretical contact time (T) of the disinfecting chemical during the treatment process.
Use of Chlorine Dioxide
This staff guidance document provides public water systems with information on the proper use of the disinfectant chlorine dioxide.