Water Testing Compliance Checklist for Houston Food Service

Houston Local Water Testing Requirements

The Houston Health Department requires food service establishments to conduct bacteriological testing of potable water supplies at least annually, with more frequent testing if previous samples showed contamination. All public water systems serving food operations must be certified and regularly monitored by the local utility authority. Private well systems require initial testing plus quarterly sampling for total coliform bacteria per Texas DSHS rules. Documentation of all test results must be retained for a minimum of one year and made available during health inspections. Establishments using bottled water must verify supplier compliance with FDA bottled water standards.

Backflow Prevention & Cross-Connection Compliance

Houston requires backflow prevention devices on all connections between potable water systems and non-potable sources, including equipment that recirculates water. Double-check valves, reduced pressure principle (RPP) devices, and atmospheric vacuum breakers must be installed, tested, and certified annually by a licensed backflow prevention technician. All testing reports must include the device identification number, installation date, test date, and technician certification. A common violation is failing to perform annual certification testing—inspectors will request proof of current certification during routine visits. The Houston Health Department maintains a registry of approved backflow prevention contractors.

Common Water Testing Violations to Avoid

Inspectors frequently cite failures to conduct annual coliform testing, missing documentation of water sampling results, and expired backflow prevention certifications. Improper storage of potable and non-potable water (such as using unmarked containers) triggers immediate violations under Texas Health & Safety Code §481.181. Cross-contamination risks from hoses left in sinks, ice machines drawing from non-certified lines, or mop sink spray devices without anti-siphon protection are critical deficiencies. Establishments must also ensure water temperature logs for both hot and cold water are maintained daily, as temperature affects pathogen survival. Keep all certifications, test reports, and corrective action records organized and easily accessible for surprise inspections.

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