US Water Score: D
| Contaminant | Detected Level | EPA MCL | Health Guideline | Status |
|---|---|---|---|---|
| Lead |
1.0
|
15 ppb | 1 ppb | Passed |
Water Quality Summary
Tap water quality in Polacca, Arizona (86042) receives an overall grade of D (Elevated record-based concern) with a score of 48 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 24 points below the Arizona state average of 72. Compared to the national average (75), this area scores significantly lower. The area is served by Polacca, a groundwater system providing water to approximately 3,890 people. Over the past 5 years, water systems here have accumulated 27 violations, including 11 health-based violations.
A score of 48/100 flags significant system-level concerns in the US Water Score model for Polacca, AZ. These may include violations, contaminant levels near or above regulatory limits, or PFAS detections. Review the detailed records, your utility's Consumer Confidence Report, and qualified local guidance.
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
Tap water in Polacca, Arizona receives a grade of D (Elevated record-based concern) with a score of 48/100. This indicates significant water quality concerns based on violation history, contaminant levels, or enforcement actions. We recommend reviewing the specific contaminants detected below and considering a certified water filter.
ZIP code 86042 is served by 1 water system using groundwater sources, providing water to approximately 3,890 people. Groundwater is naturally filtered through rock and soil, often requiring less treatment. However, it can be vulnerable to contamination from underground sources like naturally occurring arsenic, nitrates from agriculture, or PFAS from industrial sites.
Lead levels in Polacca, Arizona are 1.0 ppb, which is at or below the health guideline of 1 ppb. This is a positive result, though periodic testing is still recommended.
No PFAS ("forever chemicals") were detected in water systems serving Polacca, Arizona during the most recent EPA monitoring period (UCMR5). However, not all water systems have been tested for all PFAS compounds, and new contamination can occur over time.
Water systems serving Polacca, Arizona have received 27 violations in the last 5 years, including 11 health-based violations. 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.
Water in Polacca, Arizona shows no major contaminant concerns based on available data. A basic carbon filter can improve taste and reduce chlorine. For extra peace of mind, an NSF-certified pitcher filter or faucet-mount filter provides an affordable layer of protection.