C
55

Fair Water Quality

Clark, NJ 07066

Union County · Population served: 848,806 · Data updated March 2026

Water Systems Serving This Area

🏔
MIDDLESEX WATER COMPANY
Surface water · Pop. 233,376
PWSID: NJ1225001
🏔
NJ AMERICAN WATER - RARITAN
Surface water · Pop. 615,430
PWSID: NJ2004002

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
3.0
15 ppb 1 ppb Warning

PFAS / Forever Chemicals

10 detected 3 above EPA limits
CompoundLevelEPA MCLHealth GuidelineStatus
PFOA7.5 ppt4 ppt4 pptExceeded
PFBA7.3 pptNo standard500 pptUnregulated
PFOS6.8 ppt4 ppt4 pptExceeded
PFOA6.5 ppt4 ppt4 pptExceeded
PFBA5.9 pptNo standard500 pptUnregulated
PFPeA5.4 pptNo standardUnregulated
PFHxA4.4 pptNo standard400 pptUnregulated
PFPeA4.3 pptNo standardUnregulated

Violation History (Last 5 Years)

16Total (5yr)
0Health-Based
7Major

Water Quality Summary

Understanding Your Water in Clark

Tap water quality in Clark, New Jersey (07066) receives an overall grade of C (Fair) with a score of 55 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 8 points below the New Jersey state average of 62. Compared to the national average (75), this area scores significantly lower. The area is served by 2 water systems providing water to approximately 848,806 people, using surface water sources. Testing has found elevated levels of Lead that warrant attention. Notably, 3 PFAS compounds exceed EPA limits — a significant concern given the persistent nature of these chemicals. The area has 16 violations over the past 5 years, though none were classified as health-based.

Your Score 55/100 C
vs State 8 pts below New Jersey avg (62)
vs National 20 pts below national avg (75)

What a Grade C Means

A score of 55/100 indicates fair water quality in Clark, NJ. While the water meets minimum federal standards, there are noteworthy concerns — either elevated contaminant levels approaching regulatory limits, a moderate violation history, or both. Residents may want to review specific contaminant data and consider targeted filtration, especially for sensitive groups like children and pregnant women.

Surface water: sourced from rivers, lakes, or reservoirs

Health Information

What These Contaminants Mean for You

⚠️

Lead in Your Water

Lead is a toxic metal that can leach from aging pipes and plumbing fixtures.

Health Effects

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.

Common Sources

Lead enters water primarily through corrosion of lead service lines, lead solder, and brass fixtures — especially in homes built before 1986.

What You Can Do

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

Frequently Asked Questions

Tap water in Clark, New Jersey receives a grade of C (Fair) with a score of 55/100. While it generally meets minimum federal standards, there are some areas of concern including violation history or elevated contaminant levels. Sensitive populations (children, pregnant women, elderly) may want to consider additional filtration.

ZIP code 07066 is served by 2 water systems using surface water sources, providing water to approximately 848,806 people. Surface water systems are more susceptible to contamination from agricultural runoff, industrial discharge, and weather events, but typically undergo more extensive treatment including filtration and disinfection.

Lead was detected at 3.0 ppb in Clark, New Jersey. While this is below the EPA action level of 15 ppb, it exceeds the health guideline of 1 ppb recommended by health organizations. Consider a certified lead filter, especially if you have young children.

Yes — 10 PFAS compounds were detected in water serving Clark, New Jersey, and 3 exceed EPA maximum contaminant levels. PFAS are persistent chemicals linked to cancer, immune system effects, and developmental issues. A reverse osmosis or activated carbon filter certified for PFAS removal is recommended.

Water systems serving Clark, New Jersey have received 16 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 Clark, New Jersey 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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