US Water Score: B
| Contaminant | Detected Level | EPA MCL | Health Guideline | Status |
|---|---|---|---|---|
| Lead |
20.0
|
15 ppb | 1 ppb |
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 |
|---|---|---|---|---|
| PFOS | 12.0 ppt | 4 ppt | 4 ppt | Above comparison value |
| PFPeA | 8.1 ppt | No standard | — | No federal MCL shown |
| PFHxA | 7.4 ppt | No standard | 400 ppt | No federal MCL shown |
| PFBA | 7.0 ppt | No standard | 500 ppt | No federal MCL shown |
| PFOA | 5.9 ppt | 4 ppt | 4 ppt | Above comparison value |
| PFBS | 4.5 ppt | 2000 ppt | 100 ppt | Below comparison value |
| PFHxS | 3.5 ppt | 10 ppt | 10 ppt | Below comparison value |
| PFHpA | 3.4 ppt | No standard | — | No federal MCL shown |
Water Quality Summary
Tap water quality in Apex, North Carolina (27539) receives an overall grade of B (Moderate-low record-based concern) with a score of 71 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 20 points below the North Carolina state average of 90. The area is served by 3 water systems providing water to approximately 51,947 people, using surface water and groundwater sources. Notably, 2 PFAS compounds exceed the EPA final MCL value used for comparison — a significant concern given the persistent nature of these chemicals. The area has 20 violations over the past 5 years, though none were classified as health-based.
A score of 71/100 means Apex, NC 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, Apex, North Carolina receives an internal US Water Score grade of B (Moderate-low record-based concern) with a score of 71/100. 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 27539 is served by 3 water systems using surface water, groundwater sources, providing water to approximately 51,947 people. Multiple source types mean your water may come from a blend of surface and underground sources.
Lead levels in the public-system record for Apex, North Carolina are 20.0 ppb, above the currently applicable EPA action level of 15 ppb. EPA's Lead and Copper Rule Improvements lower that action level to 10 ppb when the new requirements take effect. This system-level result does not measure an individual tap; consider a certified lead-removal filter and independent tap testing.
Yes — 8 PFAS compounds were detected in records associated with water serving Apex, North Carolina, and 2 results 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 Apex, North Carolina have received 20 violations in the last 5 years. 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 (lead, PFAS), residents in Apex, North Carolina 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.
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