Lewisville lifts boil-water notice after repairs to water main near State Highway 121
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Summary
A steel water main separated because of erosion near State Highway 121; the city issued a boil-water notice, ran 24-hour lab tests and lifted the notice after acceptable results.
City crews repaired a separated water main caused by creek erosion near 1702 State Highway 121 Business and lifted a boil-water notice after water quality tests cleared the system.
City staff said erosion along the creek undermined the pipe, causing a separation between joints and a rapid release of water that reduced system pressure. The city's rules require a boil-water notice whenever pressure drops below 20 psi; officials said they issued the notice and then performed the required 24-hour bacteriological tests.
"We issued the boil-water notice at approximately 2 p.m. today," a city utilities staff member said during the meeting. "Once we flushed the system, we took water tests. It's a 24-hour process to test those water samples. As soon as those water samples hit 24 hours, we ran those tests through our in-house lab, and they passed. So we lifted the boil-water notice."
Officials said the break occurred in a steel cylinder pipe parallel to a creek behind an O'Reilly Auto Parts near the address given in the meeting. The city said the pipe showed evidence of erosion that removed soil around the line; staff described the pipe as approximately 25 years old.
Council members and staff praised the cross-departmental response. City Manager and other leaders said nearly every department participated: public services, fire, police, code enforcement, economic development and utility billing. Council members also urged residents to sign up for the city's alert system; staff noted state rules restrict use of utility-billing contact information for emergency notifications.
City staff said the system regained pressure following repairs and that testing results allowed staff to rescind the boil-water notice after the 24-hour tests passed.
