US Water Score: B
| Contaminant | Detected Level | EPA MCL | Health Guideline | Status |
|---|---|---|---|---|
| Lead |
0.0
|
15 ppb | 1 ppb | Passed |
Water Quality Summary
Tap water quality in Surprise, Arizona (85374) receives an overall grade of B (Moderate-low record-based concern) with a score of 70 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is roughly in line with the Arizona state average of 72. The area is served by 5 water systems providing water to approximately 127,718 people, using surface water and groundwater sources. Over the past 5 years, water systems here have accumulated 29 violations, including 2 health-based violations.
A score of 70/100 means Surprise, AZ 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, Surprise, Arizona receives an internal US Water Score grade of B (Moderate-low record-based concern) with a score of 70/100. 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 85374 is served by 5 water systems using surface water, groundwater sources, providing water to approximately 127,718 people. Multiple source types mean your water may come from a blend of surface and underground sources.
Lead levels in Surprise, Arizona are 0.0 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 Surprise, 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 Surprise, Arizona have received 29 violations in the last 5 years, including 2 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 Surprise, 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.