Texas Water Quality Records

2026 report · PWSID TX0150018

Read the San Antonio Water System report

The report is titled 2026 Water Quality Report and says it uses 2025 data from the most recent required tests. Individual tables also include results collected in 2023 and 2024. Read each row's sample period when comparing results.

Read our SAWS report summary →

Water sources

A system can use several supplies

SAWS's report lists groundwater from the Edwards, Carrizo, Simsboro, Trinity, and Wilcox aquifers and, in some areas, surface water from Canyon Lake. It also names purchased-water supplies.

Those report descriptions do not identify the mix reaching a particular address today. Confirm your provider first, then use its report and current instructions.

View the SAWS system profile →

Inventory · July 1, 2026

What the 7,397-system total includes

The report lists 4,747 community systems, 928 non-transient non-community systems, and 1,722 transient non-community systems. These add up to 7,397 regulated public water systems, not the number of records on this site.

Community systems serve places where people live. Non-transient non-community systems serve recurring groups, such as schools or workplaces; transient systems serve changing visitors, such as parks and restaurants.

Read the inventory and definitions (PDF, pages 4–5) →

Compliance · 2025 reporting window

A violation's dates and type matter

The report includes violation periods that began on or before December 31, 2025 and ended on or after January 1, 2025. Some included violations therefore began before 2025; the report does not establish which notices or violations are current today.

A maximum contaminant level violation concerns a regulatory contaminant limit. A monitoring or reporting violation concerns required testing or reporting. TCEQ also distinguishes treatment requirements and consumer notification; these categories should not be treated as interchangeable.

Read the compliance window and definitions (PDF, pages 3–5) →

Find the record

Search with the identifier on your bill

1. Open Drinking Water Viewer and use Search for: Water Systems.
2. Enter the full PWSID in Water System ID, leaving Water System Name blank, then select Search.
3. Compare the returned Water System ID and Water System Name with your provider's information, then open the matching result.
4. Use the record's Microbial / Coliform, Chemical Samples, or Violations & Enforcements sections for the question you are investigating. Check the sample date, units, and record category.

Open Texas Drinking Water Viewer →

Read TCEQ's viewer instructions →

Worked example · PWSID TX0150018

San Antonio Water System

Searching TX0150018 returns SAN ANTONIO WATER SYSTEM. The record separates its sources of water, water purchases, and systems it sells to. A supplier relationship does not by itself identify the provider for your home.

This is one verified system example. Ask your provider about address coverage; a city name or the record's mailing address is not a service boundary.

Open SAWS's official system record →

Reports and notices

Get the issued report from your provider

TCEQ says the CCR template downloaded from Drinking Water Viewer is an incomplete draft for a water system to finish. For the report issued to customers, use your provider's archive or ask for the year you need. If you do not receive a water bill, your property manager can help identify the provider.

For current instructions, check your provider's notice channels and contact it directly. Annual reports and regulatory templates are not live emergency-alert feeds.

Read TCEQ's CCR guidance →

Find provider and notice links in our system profiles →

Lead

Ask about the service line for your address

TCEQ's lead guidance separates service-line inventory information from water sampling and customer notifications. Ask your utility what its inventory records for your property, how uncertain material is handled, and what local replacement options apply.

A system's lead or copper sample results do not establish the pipe material or the lead level at every household tap.

Read TCEQ's service-line inventory guidance →

PFAS

Keep sampling results separate from rule changes

TCEQ's PFAS page covers named compounds, monitoring, and regulatory developments. Its current guidance also identifies proposed federal changes, so a proposal should not be read as an already effective requirement.

When reading a result, match the system, compound, units, and sample period. Use the linked agency guidance for the applicable rule context.

Read TCEQ's PFAS guidance →

Private wells and questions

Use a separate testing pathway

A neighboring public utility's report does not describe a private well. TCEQ directs private-well owners to testing guidance and recommends an accredited drinking-water laboratory. Confirm the test, sample collection requirements, and price with the laboratory.

TCEQ's consumer page also provides separate routes for viewer questions, CCR questions, and environmental complaints. For an immediate local instruction or interruption, contact your provider.

Find TCEQ's testing and consumer-contact guidance →

Review laboratory accreditation resources →