- San Marcos Mercury | Local News from San Marcos and Hays County, Texas - https://smmercury.com -

San Marcos well cleared of E. coli


A repeat analysis of raw water from a City of San Marcos water well tested clear of E. coli bacteria Tuesday.

The additional sample drawn Monday from the Spring Lake # 1 well was tested by the Edwards Aquifer Research and Data Center Laboratory at Texas State University, which found no E. coli in the raw water.

No bacteria were found in the city’s water distribution system which supplies potable water to the community. The city’s Water Utility disinfects all water before it is sent out into the distribution system.

The original samples were taken from raw untreated water from a well which supplies 1.5 percent of the total system supply. Most of the city’s treated water comes from surface water.

The well was shut down Friday after the bacteria was found in a raw water sample. City Water Utility workers flushed the well on Friday and again on Monday to provide fresh water and to restore water quality.

The well will return to service on Wednesday.

“Escherichia coli” are bacteria are commonly found in the intestines of warm blooded animals. Some E. Coli strains can cause serious gastrointestinal illnesses in humans if consumed.

The city’s chlorine treatment effectively disinfects and eliminates all potential bacterial contaminants.

The city has worked closely with the Texas Commission on Environmental Quality to insure all regulatory requirements are followed and public health is protected at all times, said Tom Taggart, Director of Public Services.

Residents may call the Public Services Department at 393-8010 for more information.