Water Testing Requirements for San Antonio Restaurants

San Antonio & Bexar County Water Testing Rules

The City of San Antonio Metropolitan Health District enforces local food service water standards under the San Antonio Food Code, which aligns with the Texas Food Rules. Restaurants must use potable water from approved public water systems or private wells that meet coliform testing requirements. The city requires annual water testing for establishments with private wells, including total coliform and E. coli analysis performed by a certified lab. Public water systems serving San Antonio are regularly tested by the city's water utility, but restaurants may still need point-of-use testing if they operate secondary systems like ice machines or beverage dispensers. Hot water systems must maintain 110°F minimum at the tap, verified during health inspections.

Texas State Health Department Water Requirements

Texas DSHS enforces statewide rules that set baseline standards San Antonio restaurants must follow. All potable water must come from approved public water systems or meet standards in Texas Administrative Code Title 25, Chapter 229. The FDA Food Code, adopted by Texas as guidance, requires testing for total coliforms (indicator of fecal contamination), E. coli, and nitrates in well water. Restaurants must obtain water test results before operating and maintain documentation for inspection. If testing reveals contamination, establishments must notify the health department and take corrective action—using bottled water or installing NSF-certified treatment systems until the issue resolves. DSHS also monitors for emerging contaminants like PFOA (per- and polyfluoroalkyl substances) in some regions.

Federal FDA Standards vs. Local Enforcement

The FDA Food Code sets national baseline standards but does not directly regulate restaurants—Texas and San Antonio agencies enforce these rules locally. Federal requirements cover pathogen risks (Cryptosporidium, Giardia) and chemical contaminants; Texas DSHS implements these through state rules, while San Antonio adds city-specific inspection protocols. Unlike federal agencies, San Antonio's health department conducts unannounced inspections and issues violations for non-compliance—failing water tests can result in closure orders. The EPA regulates public water systems at the federal level, but restaurants are responsible for verifying their supplier's compliance and testing secondary systems independently. Restaurants using bottled water for cooking and drinking must source it from FDA-approved suppliers; the city inspects documentation during routine visits.

Monitor compliance with Panko Alerts' real-time health updates.

Real-time food safety alerts from 25+ government sources. AI-scored by urgency. Less than one bad meal a month — $4.99/mo.