SAWS Detects E. Coli in Untreated Well Water; Tap Water Remains Safe

San Antonio Water System (SAWS) officials reported E. coli bacteria in untreated water from the Turtle Creek 3 well on the Northwest Side, though no boil water notice is in effect. SAWS stated that finished drinking water remains safe because all raw groundwater is disinfected before delivery to customers.

Routine sampling identified the bacteria in raw water, according to SAWS. The utility has taken the Turtle Creek 3 well offline while crews investigate the contamination source, disinfect the facility, and conduct more tests.

Did You Know? SAWS has collected approximately 420 finished water samples so far this month, and none have tested positive for E. coli.

Why is there no boil water notice?

The bacteria was detected in untreated water before it entered the public system, SAWS officials stressed. Because the utility disinfects all raw groundwater before it becomes finished drinking water, customers are not at risk.

“This is not a boil water notice,” SAWS said in a statement. The utility added that customers do not need to take additional precautions before consuming their water.

Expert Insight: Samantha Carter notes that the public notice is a matter of regulatory compliance rather than immediate danger. Federal and state regulations mandate that utilities notify the public whenever E. coli or fecal bacteria are found in a groundwater source, regardless of whether the treatment process neutralized the threat.

What happens next for the Turtle Creek 3 well?

The well will remain out of service until testing confirms it can safely return to operation, according to SAWS. This process may include continued disinfection and further sampling of the raw water source.

E. coli found in Bexar County water well prompts SAWS to take precautionary measures

The utility, which serves more than 2 million customers across the San Antonio region, will likely continue its routine distribution system testing to ensure water safety.

Frequently Asked Questions

Is the drinking water currently safe?
Yes. SAWS stated that finished water remains safe and no boil water notice has been issued.

Which specific location was affected?
The E. coli was detected in raw water from the Turtle Creek 3 well on the Northwest Side.

Why was the public notified if the water is safe?
Federal and state regulations require water utilities to notify customers whenever E. coli or fecal bacteria is detected in a groundwater source.

How do you feel about the transparency of local utility notifications regarding water quality?