ZipCheckup grade for 78734: A.

Checked records flag no major concern; missing data is unknown.

Health Violations Found
A 91

Austin, TX (78734): PFAS Detected in Mapped Water Systems - 91/100

EPA data combined for 6 water systems mapped to this ZIP (largest mapped system: Travis County Wcid 17)

Health Violations Found PFAS Detected NFIP Claim History

Health-based violation records by water system:

  • TX2270379 (1)

EPA records for the water systems mapped to 78734 in Austin, TX contain 2 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 1 are marked health-based.

Data source: U.S. Environmental Protection Agency (EPA) SDWIS

Based on EPA Drinking Water FEMA Flood Data U.S. Census CDC Energy Information Admin. USGS Water Data & 9 more federal sources
Latest air quality, EPA records and weather alerts Current data temporarily unavailable
Current EPA violation data unavailable
Water records and current conditions
Current EPA violation data unavailable
Safety Score
A 91/100
Water Quality Issues 1 health-based violation
Lead Risk Below action level 0.0031 mg/L, 90th percentile, sample period ending 2023-12-31
NFIP Claim History Claim records 351 claims
Data confidence: High (direct measurement) Medium (sampled / sub-geography) Low (modeled / inferred) Methodology →

At a Glance

  • Water EPA records for water systems mapped to this ZIP show 1 health-based violation and 1 non-health-based (since 2021).
  • Lead The reported 90th-percentile lead result of 0.0031 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
  • PFAS PFAS detected in UCMR5 sampling; see the PFAS section for each compound, compared with the federal PFAS MCL where one exists.
  • Radon EPA Zone 3 - county-level radon potential, not evidence of a low home result.
  • Flood 351 cumulative NFIP claim records. This historical count is not a current property-risk verdict.
Contaminant Summary
Health Violations
2 violations 1 health-based PFAS detected
Report data assembled: Jul 27, 2026 EPA water-system identity: source date or period is not present in ZipCheckup's accepted source record EPA violation history: more than two update cycles old Lead, copper and UCMR measurements: source date or period is not present in ZipCheckup's accepted source record Consumer Confidence Report: source date or period is not present in ZipCheckup's accepted source record
A
ZIP-level Home Safety model score: 91 / 100
Home Safety Score higher than 82% of ZIP codes nationwide
6
Water Systems
45,165
People Served
1
Health Violations (since 2021)Median is 0
Surface water
Water Source
0.00314 mg/L
Reported Lead Result1.4× the national median for this measure
Zone 3
County Radon Potential · Low
$626K
Median Home Value222% above state median ($195K)

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Score Breakdown

Overall Home Safety Score: 91/100

This is the published model score. Component and domain values are shown independently; they are not added together on this page.

Canonical components

EPA water compliance
98/100
Observed
PFAS MCL screen
100/100
Observed
EPA radon zone
100/100
Observed
Annual EPA AirData AQI
75/100
Observed

Required domains

Drinking water
99/100
Indoor environment
100/100
Outdoor environment
75/100

Coverage: 4 of 4 components and 3 of 3 domains observed.

Model 4.0.0; series home-safety-v4-cross-vertical.

Safety & Health (8) CRITICAL

Your Water System

ZIP code 78734 in Austin, Texas is mapped to the water system Travis County Wcid 17 (EPA ID: TX2270027). This system provides water to approximately 45,165 people from surface water sources.

There are 6 community water systems serving this area.

Lead & Copper in Your Water

The EPA requires water systems to monitor lead and copper levels under the Lead and Copper Rule.

Metal Measured Level EPA Action Level Status Sample Date or Period
Copper Action-level exceedance on record 1.3 mg/L Exceeds action level Not present in ZipCheckup accepted source data
How to read the copper row. EPA's reporting schema defines the copper CU90 code as an action-level exceedance (a system's 90th-percentile copper above the 1.3 mg/L action level), so this row reflects an exceedance on record, not a routine measurement. No copper concentration is shown because no verified unit is available for this value. A system with no copper record has not been shown to be clean: the absence of a recorded exceedance is not a measurement.

Water Systems Serving This Area

System Name EPA ID Population Source
Travis County Wcid 17 TX2270027 45,165 Surface water
Lakeway Municipal Utility District TX2270012 10,512 Surface water
Hurst Creek Municipal Utility District TX2270172 2,880 Surface water
Travis County Municipal Utility District 12 TX2270398 1,644 Surface water
Travis County Municipal Utility District 13 TX2270388 1,644 Surface water

Other Water Quality Reports in Texas

Nearby Water Quality Reports

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Travis County Wcid 17 (TX2270027) on EPA.gov.

4 of the top compounds applied across the surrounding county in USGS pesticide-use estimates appear on EPA drinking-water monitoring lists. See the agricultural pesticide-use section.

📊 EPA Safe Drinking Water · View source →

PFAS Contamination Detected

PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 78734.

Detected compounds: PFPeA.

Highest measured level: 0.0032 µg/L

Reverse osmosis (RO) and activated carbon block filters can reduce PFAS at the tap. Certifications list the compounds covered: an NSF/ANSI 53 or 58 claim for PFOA/PFOS does not cover every PFAS, so check that the product lists the compounds detected here.

📊 EPA UCMR5 · View source →
Environmental Hazards (11) MODERATE
Home & Infrastructure (6) OK
Cost & Community (9) HIGH

CPSC product recall notices

These national notices are not matched to this ZIP code or water system.

View all recalls →

📊 CPSC · View source →

Protect Your Home in Austin

Based on local data for ZIP 78734, these services may benefit homeowners in your area.

Based on local data for your area. Use the tools below to explore your options.

Home & Flood Insurance

The ZIP code for this report in Austin has 351 FEMA flood claims on record. Standard homeowner policies don't cover flood damage - make sure you're protected.

Typical cost: Flood insurance: premiums vary by property and flood zone; request a quote

Check Your Flood Zone (Free)

FEMA flood map lookup - see if your property is in a flood zone

Free tip: Check your FEMA flood zone at msc.fema.gov (free lookup)

Roofing Inspection & Repair

Active weather alerts in Texas increase the risk of roof damage from hail and high winds. A professional inspection can identify vulnerabilities.

Typical cost: Roof inspection: typically $75–$300; repairs $300–$1,500

Estimate Your Home Insurance Needs

Service recommendations are based on public data for this ZIP code (FEMA, Census ACS, NWS). Actual needs vary by property. By calling, your information will be shared with an independent service provider. ZipCheckup may receive compensation. Cost estimates are approximate and vary by property, condition, and contractor.

Frequently Asked Questions

Is the tap water in 78734 safe to drink?

EPA SDWIS records 2 violations since 2021 across the water systems mapped to ZIP 78734 (primary system: Travis County Wcid 17), including 1 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.

Where does 78734's water come from?

The recorded water source for Travis County Wcid 17, a system mapped to ZIP code 78734, is Surface water. This system serves approximately 45,165 people.

How does Austin water compare to the national average?

Austin's Home Safety Score ranks better than 82% of U.S. ZIP codes, and at or above 72% within Texas.

How can I get my water tested in Austin?

If Travis County Wcid 17 supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.

Is lead a concern in 78734 tap water?

The Lead and Copper Rule record selected for 78734 reports a 90th-percentile lead result of 0.00314 mg/L for a water system mapped to this ZIP (record date 2023-12-31). The EPA action level is 0.015 mg/L. This result is below the EPA action level; it does not show the lead level in each home.

What is the radon risk for 78734?

78734 is mapped to a county in EPA Radon Zone 3 (low county-level radon potential; EPA recommends testing every home), located in Travis County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.

Are there PFAS (forever chemicals) in 78734's water?

Yes, PFAS have been detected in samples from water systems mapped to 78734. Reverse osmosis and activated carbon filters certified to NSF/ANSI 53 or 58 specifically for PFOA/PFOS reduction can reduce PFAS.

What does the NFIP claim history show for ZIP 78734?

FEMA records contain 351 flood insurance claims filed in ZIP code 78734; the recorded rated-zone value (the most frequent one if there are several claims) is AE, which is claims evidence and may differ from the current FEMA map zone for a property. This is a substantial claim history, but claim count is not a count of distinct events or properties. Review FEMA's map for the specific property.

How to cite this page

APA ZipCheckup. (2026). Austin, TX (78734): PFAS Detected in Mapped Water Systems - 91/100. https://zipcheckup.com/report/78734/
BibTeX 
@misc{zipcheckup-report-78734,
  author = {{ZipCheckup}},
  title  = {{Austin, TX (78734): PFAS Detected in Mapped Water Systems - 91/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/report/78734/}
}

Page version: October 2026.

Nearby ZIP Code Reports

Water quality comparison for ZIP codes near 78734

ZIP Code City, State Distance Grade Violations
78732 Austin, TX 2.5 mi B 2
78738 Austin, TX 3.5 mi A 16
78733 Austin, TX 5.3 mi A 11
78645 Leander, TX 5.6 mi B 44
78716 Austin, TX 6.3 mi N/A 0
78669 Spicewood, TX 6.8 mi N/A 49
78730 Austin, TX 7.1 mi B 6
78726 Austin, TX 7.7 mi B 2
78736 Austin, TX 8.9 mi B 7
78746 Austin, TX 9.0 mi C 22

Contaminants Detected in 78734

Learn more about the contaminants found in your water supply:

Overall safety breakdown

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2026 Rankings

ZIP 78734 scores in the top tier nationally.

Coverage: 15/17 risk factors Data sources →
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