US Water Score: B
| Contaminant | Detected Level | EPA MCL | Health Guideline | Status |
|---|---|---|---|---|
| Lead |
0.6
|
15 ppb | 1 ppb | Passed |
UCMR5 occurrence results are screening information, not a finding of regulatory compliance or noncompliance. PFAS rules and compliance dates are evolving.
| Compound | Level | EPA MCL | Health Guideline | Status |
|---|---|---|---|---|
| PFBA | 8.4 ppt | No standard | 500 ppt | No federal MCL shown |
| PFHxS | 6.2 ppt | 10 ppt | 10 ppt | Below comparison value |
| PFBS | 5.1 ppt | 2000 ppt | 100 ppt | Below comparison value |
| PFOS | 4.8 ppt | 4 ppt | 4 ppt | Above comparison value |
| PFPeA | 4.1 ppt | No standard | — | No federal MCL shown |
| PFHxA | 3.3 ppt | No standard | 400 ppt | No federal MCL shown |
Water Quality Summary
Tap water quality in Austin, Texas (78745) receives an overall grade of B (Good) with a score of 74 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 6 points below the Texas state average of 80. The area is served by 3 water systems providing water to approximately 1,115,323 people, using groundwater and surface water sources. Notably, 1 PFAS compound exceeds the EPA final MCL value used for comparison — a significant concern given the persistent nature of these chemicals. Over the past 5 years, water systems here have accumulated 4 violations, including 1 health-based violations.
A score of 74/100 means Austin, TX performs well in the US Water Score model, with only minor system-level concerns. Residents should still review their utility's Consumer Confidence Report for official compliance information and household-specific context.
Health Information
Lead is a toxic metal that can leach from aging pipes and plumbing fixtures.
Even low levels of lead exposure can cause developmental delays in children, kidney damage, and cardiovascular effects in adults. The EPA action level is 15 ppb, but health experts recommend no safe level of lead in drinking water.
Lead enters water primarily through corrosion of lead service lines, lead solder, and brass fixtures — especially in homes built before 1986.
If lead is detected above 1 ppb, consider using a certified lead-removal filter (NSF/ANSI 53) for drinking and cooking water. Run cold water for 30 seconds before use if water has been sitting in pipes.
Common Questions
Based on public water-system records, Austin, Texas receives an internal US Water Score grade of B (Good) with a score of 74/100. This indicates relatively few system-level concerns in our model, but it is not an EPA safety rating and does not guarantee tap conditions inside individual homes.
ZIP code 78745 is served by 3 water systems using groundwater, surface water sources, providing water to approximately 1,115,323 people. Multiple source types mean your water may come from a blend of surface and underground sources.
Lead levels in Austin, Texas are 0.6 ppb, which is at or below the health guideline of 1 ppb. This is a positive result, though periodic testing is still recommended.
Yes — 6 PFAS compounds were detected in records associated with water serving Austin, Texas, and 1 result exceeded the numerical EPA MCL value used for comparison. UCMR5 occurrence results alone are not a regulatory compliance determination. PFAS rules and compliance timelines are evolving; verify current information with the utility and EPA.
Water systems serving Austin, Texas have received 4 violations in the last 5 years, including 1 health-based violation. Violations can range from paperwork issues (monitoring & reporting) to serious health-based violations where contaminant levels exceeded safe limits. Review the violation details above for specifics.
Based on detected contaminants (PFAS), residents in Austin, Texas should consider: Reverse osmosis (RO) system — most effective for PFAS, lead, and other contaminants. Always look for filters with NSF/ANSI certification for the specific contaminants you want to remove.