Castroville Residents Advised to Boil Water After Main Break

City officials say crews are working to locate and repair the issue as quickly as possible.

Apr. 8, 2026 at 8:08pm

Got story updates? Submit your updates here. ›

A sweeping, atmospheric landscape painting in muted tones of gray and blue, with a small town nestled in the distance obscured by heavy fog, conveying a sense of the overwhelming scale and power of the natural world.A small town's water infrastructure is dwarfed by the overwhelming force of nature, underscoring the fragility of essential services during extreme weather events.San Antonio Today

Residents in Castroville, Texas, a town about 35 miles west of San Antonio, have been advised to boil their water before consumption after a significant water main break caused a loss of service for many homes and businesses. The city issued a boil water notice on Facebook, instructing people to boil any water they plan to use for washing, drinking, or cooking for at least two minutes to eliminate any potential bacteria.

Why it matters

Water main breaks can pose serious health risks if not addressed quickly, as contaminated water can lead to the spread of waterborne illnesses. This incident highlights the importance of maintaining aging infrastructure and the need for municipalities to have emergency response plans in place to quickly notify and provide guidance to residents during such disruptions.

The details

The water main break occurred on the west side of Castroville, causing the city to shut off water service for that area. Officials noted that the only areas not affected are Alsatian Oaks and the east side of the city. Crews are currently working to locate and repair the issue, but the city did not provide a timeline for when service may be restored and the boil water notice lifted.

  • The boil water notice was issued around 2 p.m. on Wednesday, April 8, 2026.

The players

City of Castroville

The local government of Castroville, Texas, which issued the boil water notice and is overseeing the response to the water main break.

Texas Commission on Environmental Quality

The state agency that advised the City of Castroville to issue the boil water notice.

Got photos? Submit your photos here. ›

What’s next

The city did not provide a specific timeline for when the boil water notice may be lifted, but officials stated that crews are working to locate and repair the issue as quickly and safely as possible.

The takeaway

This incident highlights the importance of maintaining aging water infrastructure and having emergency response plans in place to quickly notify and provide guidance to residents during disruptions to water service. Boil water notices are a critical public health measure to prevent the spread of waterborne illnesses when water quality is compromised.