D
38

Poor Water Quality

Lake Hiawatha, NJ 07034

Morris County · Population served: 50,690 · Data updated March 2026

Water Systems Serving This Area

🏔
PARSIPPANY-TROY HILLS WATER DEPARTMENT
Surface water · Pop. 50,400
PWSID: NJ1429001
🌊
SHADY LANE HOME PARK
Groundwater · Pop. 40
PWSID: PA2580022
🌊
OVERPECK MHP
Groundwater · Pop. 25
PWSID: PA2660006
🌊
COUNTRY PLACE MHP
Groundwater · Pop. 225
PWSID: PA6170018

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
6.0
15 ppb 1 ppb Warning

PFAS / Forever Chemicals

8 detected 2 above EPA limits
CompoundLevelEPA MCLHealth GuidelineStatus
PFOA10.9 ppt4 ppt4 pptExceeded
PFOS9.3 ppt4 ppt4 pptExceeded
PFHxA8.3 pptNo standard400 pptUnregulated
PFHxS8.0 ppt10 ppt10 pptBelow limit
PFBS7.0 ppt2000 ppt100 pptBelow limit
PFPeA6.9 pptNo standardUnregulated
PFBA5.9 pptNo standard500 pptUnregulated
PFHpA3.2 pptNo standardUnregulated

Violation History (Last 5 Years)

884Total (5yr)
3Health-Based
803Major

Water Quality Summary

Understanding Your Water in Lake Hiawatha

Tap water quality in Lake Hiawatha, New Jersey (07034) receives an overall grade of D (Poor) with a score of 38 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 24 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 4 water systems providing water to approximately 50,690 people, using surface water and groundwater sources. Testing has found elevated levels of Lead that warrant attention. Notably, 2 PFAS compounds exceed EPA limits — a significant concern given the persistent nature of these chemicals. Over the past 5 years, water systems here have accumulated 884 violations, including 3 health-based violations.

Your Score 38/100 D
vs State 24 pts below New Jersey avg (62)
vs National 37 pts below national avg (75)

What a Grade D Means

A score of 38/100 signals poor water quality in Lake Hiawatha, NJ. Significant issues have been identified, which may include multiple violations, contaminant levels near or above regulatory limits, or PFAS contamination. We recommend reviewing the detailed contaminant data below, considering a certified water filter, and checking your utility's Consumer Confidence Report for the latest information.

Surface water: sourced from rivers, lakes, or reservoirs
Groundwater: drawn from underground aquifers via wells

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 Lake Hiawatha, New Jersey receives a grade of D (Poor) with a score of 38/100. 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 07034 is served by 4 water systems using surface water, groundwater sources, providing water to approximately 50,690 people. Multiple source types mean your water may come from a blend of surface and underground sources.

Lead was detected at 6.0 ppb in Lake Hiawatha, 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 — 8 PFAS compounds were detected in water serving Lake Hiawatha, New Jersey, and 2 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 Lake Hiawatha, New Jersey have received 884 violations in the last 5 years, including 3 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.

Based on detected contaminants (lead, PFAS), residents in Lake Hiawatha, 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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