D
39

Poor Water Quality

Chester, NY 10918

Orange County · Population served: 7,876 · Data updated March 2026

Water Systems Serving This Area

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VALLEY MOBILE HOME PARK
Groundwater · Pop. 90
PWSID: NY2600973
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CHESTER VILLAGE
Surface water · Pop. 3,448
PWSID: NY3503524
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WALTON LAKE ESTATES W.D.
Groundwater · Pop. 768
PWSID: NY3503525
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SUGAR LOAF HILLS
Groundwater · Pop. 591
PWSID: NY3503576
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SURREY MEADOW W.D.
Groundwater · Pop. 784
PWSID: NY3503582

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
12.0
15 ppb 1 ppb Warning

PFAS / Forever Chemicals

4 detected 1 above EPA limits
CompoundLevelEPA MCLHealth GuidelineStatus
PFBA18.9 pptNo standard500 pptUnregulated
PFOA5.1 ppt4 ppt4 pptExceeded
PFPeA4.9 pptNo standardUnregulated
PFHxA3.6 pptNo standard400 pptUnregulated

Violation History (Last 5 Years)

21Total (5yr)
6Health-Based
10Major

Water Quality Summary

Understanding Your Water in Chester

Tap water quality in Chester, New York (10918) receives an overall grade of D (Poor) with a score of 39 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 36 points below the New York state average of 75. Compared to the national average (75), this area scores significantly lower. The area is served by 8 water systems providing water to approximately 7,876 people, using surface water and groundwater sources. Testing has found elevated levels of Lead that warrant attention. Notably, 1 PFAS compound exceeds EPA limits — a significant concern given the persistent nature of these chemicals. Over the past 5 years, water systems here have accumulated 21 violations, including 6 health-based violations.

Your Score 39/100 D
vs State 36 pts below New York avg (75)
vs National 36 pts below national avg (75)

What a Grade D Means

A score of 39/100 signals poor water quality in Chester, NY. 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 Chester, New York receives a grade of D (Poor) with a score of 39/100. 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 10918 is served by 8 water systems using surface water, groundwater sources, providing water to approximately 7,876 people. Multiple source types mean your water may come from a blend of surface and underground sources.

Lead was detected at 12.0 ppb in Chester, New York. 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 — 4 PFAS compounds were detected in water serving Chester, New York, and 1 exceeds 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 Chester, New York have received 21 violations in the last 5 years, including 6 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 Chester, New York 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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