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Calhoun County water treatment plant to begin modified disinfection process

July 24, 2014 at 2:24 a.m.


For more information

Contact your local drinking water provider:

• City of Port Lavaca: 361-552-3347

• GBRA Rural Water: 361-552-9751

•  Port O'Connor: 361-983-2652

• LaSalle: 361-983-2652

The Guadalupe-Blanco River Authority will temporarily use chlorine as the disinfecting agent in the drinking water treatment process instead of the regularly used chlorine and ammonia compound at the GBRA Port Lavaca Water Treatment Plant.

Herb Wittliff, manager for Port Lavaca operations, said in a news release that replacement will begin Aug. 18 and will end Sept. 8, when the plant will resume the use of the compound, known as chloramines.

"Chlorine and chloramines are both excellent disinfecting agents and are used extensively in the drinking water industry to safeguard finished water against bacteria that cause water-borne illnesses," Wittliff said. "However, the substitution of chlorine alone on a periodic basis is recommended by the Texas Commission on Environmental Quality in order to provide more stability to the disinfecting process and to remove any excess ammonia that might accumulate in the distribution systems over time."

The wholesale customers of GBRA, which include the city of Port Lavaca, the Calhoun County Rural Water System of GBRA, the Port O'Connor Improvement District and the LaSalle Water Control and Improvement District, will monitor the disinfectant residual in water mains. They will also increase flushing activities to provide a more efficient change-out of the water.

"Some customers may notice a slight change in palatability or taste of the water," said Stephanie Shelly, GBRA chief operator.

The water might also be slightly discolored because of the flushing, but the water will remain safe and available for all domestic purposes, Shelly said.

The GBRA provides stewardship for the water resources in its 10-county district, which includes Kendall, Comal, Hays, Caldwell, Guadalupe, Gonzales, DeWitt, Victoria, Calhoun and Refugio counties.

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