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pdws@tceq.texas.gov
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Treatment

Guidance on water treatment methods. Many staff guidance documents are undergoing review and possible revision to meet current rules and regulations and agency standards, to include standard operating procedures. For questions or comments, please contact the Public Drinking Water Section by phone at (512) 239-4691 or by e-mail at pdws@tceq.texas.gov with the subject line: "Staff Guidance Review."

Selection of Baffling Factors and Operating Conditions for T10 Calculations
The purpose of this document is to describe the method that TCEQ staff will use to determine the value of the baffling factor, basin volume, and flow rate for the equation above in the absence of emperical data.

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.
Use of Chlorine Dioxide
This staff guidance document provides public water systems with information on the proper use of the disinfectant chlorine dioxide.