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EPA SDWIS

Travis County Water Quality

Travis County, Texas

Water Grade

C

Water Score

61.7

Violations

81

State Rank

#32

of 254 (1 = best)

EPA SDWIS Compliance

Drinking Water Quality

Water Quality Grade

C

Based on EPA compliance history and violation data

Water Score

61.7/100

Higher = better quality

Health Violations

81

Health-based violations

Violation Rate

5.3%

Systems with violations

Water Advisory: Travis County

Water Verdict

Travis County receives a fair water quality assessment with a grade of C and a score of 61.7 out of 100. The water supply meets baseline federal standards, but there may be periods of elevated contaminant levels or infrastructure concerns worth monitoring.

Violation Context

Travis County has recorded 81 health-based violations, indicating multiple instances where federal contaminant limits or treatment requirements were not met. At 5.3 violations per 1,000 residents, this rate is moderate and suggests recurring water quality challenges.

Consumer Guidance

Tap water in Travis County meets baseline standards, but residents who are immunocompromised or have young children may want to use an NSF-certified water filter as a precaution. With 81 recorded health violations, staying informed about utility communications and boil-water notices is especially important. For long-term peace of mind, request your utility's latest Consumer Confidence Report and consider independent water testing if you have specific health concerns.

Regional Context

Travis County has better water quality than the average county in Texas. Its water score is 31.3 points higher than the state average, indicating stronger water system performance relative to neighboring counties.

Past 5 years

Water Quality Monitoring

Monitoring Sites

70

Active in the past 5 years

Measurements Recorded

38K

38,001 total readings

Most Measured

  • Physical
  • Inorganics, Major, Non-metals
  • Nutrient

Categories measured most frequently

Data from the EPA Water Quality Portal (WQP), aggregating monitoring records from federal, state, and tribal sources. Each measurement represents a single sample analyzed for a specific characteristic (e.g., E. coli, pH, dissolved oxygen, nitrogen).

Live USGS Streamgage

River & Stream Conditions

Current Discharge

133cfs

May 14, 6:50 PM UTC

vs Long-Term Average

7%

Well below typical

Primary Streamgage

Colorado Rv at Austin, TX

USGS site
08158000
Drainage area
39,009 sq mi
Long-term mean
2,036 cfs

One representative streamgage (the one with the largest drainage area in the county). Many counties have multiple gauges — this view summarizes the primary one. The long-term mean is the full-record annual average; "% of typical" compares the latest reading against that average.

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Frequently Asked Questions

What is the water quality in Travis County, Texas?
Travis County, Texas has a drinking-water quality grade of C with a score of 61.7/100, based on EPA SDWIS compliance data. The county has 81 health-based drinking water violations over the past 5 years. Watershed health, monitoring records, and live streamflow are reported separately on this page.
Are there any water violations in Travis County?
Travis County has 81 health-based drinking water violations recorded by the EPA over the past 5 years. Health-based violations indicate instances where contaminant levels exceeded EPA Maximum Contaminant Levels (MCLs). Violations may have been resolved — check with your local water utility for current status.
How much water-quality monitoring happens in Travis County?
EPA's Water Quality Portal records 38,001 measurements from 70 monitoring sites in Travis County over the past five years. The most frequently measured characteristic groups are Physical, Inorganics, Major, Non-metals, Nutrient. Each measurement is a single sample analyzed for one characteristic (E. coli, pH, dissolved oxygen, etc.). High monitoring density means more scientific evidence behind any reported signal — it does not by itself indicate water quality.
What's happening with rivers in Travis County right now?
Travis County's primary USGS streamgage on the Colorado Rv is currently reading 133 cubic feet per second — 7% of the long-term mean of 2,036.31 cfs. This is well below typical — often a signal of drought stress on source water. For genuine real-time data, visit waterdata.usgs.gov.
How does Travis County water compare to the Texas average?
Travis County's SDWIS water quality score of 61.7/100 is higher than the Texas state average of 30.4. The average water quality grade across Texas is F, based on data from 254 counties with available SDWIS data.
Is tap water safe to drink in Travis County?
Based on EPA SDWIS data, Travis County has a water quality grade of C (61.7/100). This indicates moderate compliance. Some violations have been recorded but overall standards are maintained. The grade speaks to the public water system, not the watershed — for watershed-level concerns, see the Watershed Health zone. For the most up-to-date information, contact your local water utility or review your Consumer Confidence Report (CCR).
Why does Travis County have so many water violations?
Travis County has 81 health-based drinking water violations on record from the EPA SDWIS database. A higher violation count can result from aging infrastructure, underfunded water utilities, agricultural runoff contamination, or industrial pollution. Counties with more water systems may also see more violations simply due to scale. Residents concerned about water quality should consider independent water testing and home filtration systems.
How does Travis County rank for water quality in Texas?
Travis County ranks #32 out of 254 counties in Texas by SDWIS water quality score (1 = best). With a score of 61.7/100, it falls in the top third of counties statewide. The ranking reflects EPA SDWIS compliance only — not watershed impairment, monitoring density, or streamflow, which are tracked separately on this page.

Counties with Similar Water Quality

Maverick County

Texas

C

61.7

Water score

Bowie County

Texas

C

61.5

Water score

Wilson County

Texas

C

62.0

Water score

Data Sources

Drinking-water compliance data from the EPA Safe Drinking Water Information System (SDWIS) via the ECHO enforcement database. Scores reflect compliance history and health-based violation counts.

Water-quality monitoring counts from the EPA Water Quality Portal (WQP) — federated USGS, EPA, and state agency sampling records over a rolling 5-year window.

Live streamflow from the USGS National Water Information System (NWIS) — continuous discharge measurements from the largest-drainage gauge in each county, compared against the full-record long-term annual mean.

Disclaimer: This data is informational only. It is not health, legal, or professional advice. For concerns about your specific water supply, contact your local water utility.

By Logan Johnson, Founder & Data EditorUpdated Reviewed by Logan Johnson, Founder & Data Editor

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