Round Rock, TX Water Quality Report

Is Round Rock tap water safe? See PFAS and lead contamination levels for Round Rock, Texas. Compare to EPA limits and get filter recommendations.

Quick Answers

Is Round Rock, TX tap water safe to drink? Round Rock, TX tap water meets most federal EPA limits, but PFAS compounds have been detected at an average of 0.01 ppt across 10 compounds. A certified pitcher filter or reverse osmosis system is recommended for sensitive populations.

What contaminants are in Round Rock, TX water? Top PFAS compounds detected in Round Rock water: PFBA (0.03 ppt), PFPeA (0.02 ppt), PFNA (0.02 ppt). See the full table for all monitored contaminants and comparison to EPA limits.

What filter should I use in Round Rock, TX? For Round Rock, TX households, reverse osmosis removes 90%+ of PFAS, lead, and arsenic. NSF-53 certified pitcher and faucet filters (ZeroWater, Clearly Filtered, LifeStraw) work for smaller households. Skip standard Brita filters for PFAS removal.

Round Rock, TX Water Quality Summary

EPA testing has detected PFAS "forever chemicals" in Round Rock, TX drinking water. Recent monitoring found a peak level of 0.03 ppt across 13 water systems, representing an average of 0.01 ppt across 10 detected compounds.

Contamination Level: LOW – Low contamination – PFAS detected but at lower levels; monitoring continues.

Top Detected Compounds

  • PFBA: 0.03 ppt
  • PFPeA: 0.02 ppt
  • PFNA: 0.02 ppt
  • PFHxS: 0.01 ppt
  • PFHxA: 0.01 ppt

Lead in Round Rock, TX Water

EPA Lead and Copper Rule testing has recorded 57 lead samples for Round Rock water systems, with a 90th-percentile high of 0.00505 mg/L (within the EPA 0.015 mg/L action level). There is no safe level of lead for children; if your home was built before 1986, a certified NSF/ANSI 53 lead-removal filter is recommended.

EPA Violations in Round Rock, TX

Round Rock public water systems have 24 health-based EPA Safe Drinking Water Act violations on record, including Nitrate, Haloacetic Acids (HAA5), Gross Alpha (excl. radon & uranium). Health-based violations mean a contaminant exceeded its federal limit or required treatment was not applied.

About the Data

Source: EPA UCMR5 (Unregulated Contaminant Monitoring Rule 5), the 2023-2025 national testing program spanning 66,000+ public water systems – the broadest drinking water survey ever run in the US. Round Rock, TX serves a population of roughly 133,372.

ZIP Codes Served

78664, 78665, 78681

What Round Rock, Texas Residents Should Do

  1. Enter your exact ZIP code at knowyourexposure.com for address-level data
  2. Request the latest Consumer Confidence Report (CCR) from your Texas utility – it is free and updated annually
  3. Choose a filter certified for PFAS: NSF/ANSI 58 reverse osmosis (94-99% removal) or an NSF-53 pitcher
  4. High-exposure households (pregnancy, infants, immunocompromised) should also consider a PFAS home test kit