Chester Village Water System water quality
Chester, NY · serves 3,448 people (1,941 connections) · Surface water · Local government · EPA ID NY3503524
Data: U.S. EPA · How we read the data · How we check it
Summary
PFAS above the 2024 federal limits. Systems have until 2029 to meet the PFAS limits.
Is it an emergency? No: PFAS limits are about years of exposure, not a glass of water, and nothing in EPA's data calls for you to stop drinking the water today. If your utility ever issues a boil-water or do-not-drink notice, follow it.
- PFAS
- Above limitPFOA above the federal limit in EPA's 2023–2025 testing (PFOA 4.53 ppt vs a limit of 4 ppt, where ppt = parts per trillion).
- Lead
- Near 2027 action level12 ppb (parts per billion) at the 90th percentile: 9 in 10 homes sampled were at or below it. Action level 15 ppb, falling to 10 ppb in Nov 2027. Monitoring period ending Dec 2023. Your home's pipes can make yours higher.
- Violations
- Resolved2 health-based violations since 2016, most recently Apr 2019.
- Pregnant, or mixing baby formula with tap water? Babies drink more water for their size, so PFAS exposure matters more for them. Consider bottled water or a filter certified for PFAS for formula, and ask your doctor. Health effects.
- To lower your PFAS exposure now, a home filter certified for PFAS reduction works (reverse osmosis, or activated carbon certified to NSF/ANSI 53 or 58). Filters for these results.
- Built before 1986, or not sure what your service line is made of? Check your service line and test your tap. Utility data can't show your pipes.
- Tested your own tap? Compare your result with these numbers. Moving? Compare this system with another.
- Read Chester Village Water System's annual water quality report (Consumer Confidence Report). It lists every regulated contaminant tested and is usually on the utility's website or mailed with your bill, and you can also request it at (845) 469-2388. EPA: how to find it.
PFAS (“forever chemicals”)
EPA UCMR 5: 2 entry points tested Feb 2023 to Dec 2023. "Average" is the highest entry-point average (non-detects counted as zero), the way EPA compares UCMR 5 results to the limits. ppt = parts per trillion. These results do not determine compliance.
| Contaminant | Highest average |
|---|---|
| PFOA Above limit Limit 4 ppt | 4.53 ppt 1.13× the limit |
| PFOS Not detected Limit 4 ppt | – |
| PFHxS Not detected Limit 10 ppt | – |
| PFNA Not detected Limit 10 ppt | – |
| HFPO-DA (GenX) Not detected Limit 10 ppt | – |
| Hazard Index (a combined score for PFHxS, PFNA, GenX and PFBS, where above 1 is over the limit) Not detected Limit 1 | – |
| PFBS Not detected Guideline 2,000 ppt | – |
| PFBA Detected, below limit Guideline 6,000 ppt | 4.72 ppt |
| PFHxA Detected, below limit Guideline 3,000 ppt | 3.3 ppt |
| PFPeA Detected, no limit | 4.2 ppt |
New York has its own PFAS limits. PFOA 10 ppt (this system's highest average: 4.53 ppt), PFOS 10 ppt (this system's highest average: not detected). State compliance is judged on the state's own sampling, so ask the utility or the state program whether it meets them.
For context: the PFOA average is higher than at 92% of the New York systems EPA tested.
29 PFAS tested, 4 detected at least once. "Not detected" means below EPA's reporting limit (about 2 to 20 ppt depending on the chemical), not proven zero. PFAS not listed were not detected. The limits for PFHxS, PFNA, GenX and the Hazard Index were proposed for rescission in May 2026. That proposal is not final. Systems have until 2029 to meet the limits.
Lithium
Not detected in 6 samples (reporting limit 9 ppb). About lithium.
Lead and copper
Latest 90th percentile: 12 ppb lead (Jan 2021 – Dec 2023). Near 2027 action level
| Monitoring period | Lead (90th pct.) |
|---|---|
| Jan 2021 – Dec 2023 | 12 ppb |
| Jan 2018 – Dec 2020 | 12 ppb |
| Jan 2015 – Dec 2017 | 6.3 ppb |
Earlier results (6)
| Jan 2012 – Dec 2014 | 6 ppb |
| Jan 2009 – Dec 2011 | 9.5 ppb |
| Jan 2006 – Dec 2008 | 11.1 ppb |
| Jan 2003 – Dec 2005 | 13 ppb |
| Jan 2000 – Dec 2002 | 4 ppb |
| Jan 1993 – Jun 1993 | 14.6 ppb |
Lead comes from pipes and fixtures, not the source water, so it varies home to home. The 90th percentile means 9 in 10 sampled homes were at or below it. More on lead.
Violations
| When | What happened |
|---|---|
| Jan 2019 – Apr 2019 2 times | The running annual average for TTHM was above the legal limit. EPA record: TTHM · Maximum Contaminant Level Violation, Average · measured 84 ug/l (limit 0.080 mg/L) Resolved |
Health-based violations mean a contaminant exceeded a limit or a required treatment step was missed. Monitoring and reporting violations mean required tests or reports were late or missing, so the water's quality during that time is unknown. The total includes every violation in EPA's records, most of them paperwork.
Earlier EPA testing (2013–2020)
| Contaminant | Highest | Guideline |
|---|---|---|
| Molybdenum | 1.06 ppb | 40 ppb |
| Chromium-6 | 0.16 ppb | – |
| Manganese | 158 ppb | 300 ppb |
| Strontium | 0.31 ppm | 1.5 ppm |
Where it serves
Chester
ZIP codes the system reported serving: 10918, 10950
Nearby utilities
- Arrow Park Inc. Cws Monroe · 5 mi · PFAS above limit
- Monroe Village Water System Monroe · 5 mi · PFAS above limit
- Kiryas Joel Water System Kiryas Joel · 6 mi
- Harriman Village Water System Harriman · 7 mi · PFAS above limit
- Suffern Village Water System Ramapo · 16 mi · PFAS above limit
- Veolia Water New York Clarkstown · 21 mi · PFAS above limit
Questions
Is Chester Village Water System water safe to drink?
Chester Village Water System had 2 health-based violations since 2016, all since resolved. EPA testing found PFAS above the 2024 federal limits, which systems must meet by 2029. Federal data can't tell you about your own pipes: lead comes from service lines and plumbing, so test your tap if your home was built before 1986. For the official word, read the utility's annual Consumer Confidence Report.
Does Chester Village Water System water have PFAS?
Yes. EPA's 2023–2025 testing of Chester Village Water System found 4 PFAS at least once. The highest entry-point averages were above the federal limit for PFOA: PFOA 4.53 ppt (limit 4 ppt for PFOA and PFOS, 10 ppt for the others).
What is the lead level in Chester Village Water System water?
The most recent 90th-percentile lead result for Chester Village Water System is 12 ppb, for the period ending Dec 2023. The federal action level is 15 ppb, falling to 10 ppb in November 2027. The 90th percentile means 9 in 10 homes sampled were at or below this number. Individual homes can be higher.
Check these numbers yourself
Every figure on this page comes from public EPA records. You don't have to take our word for it:
- EPA's own report for NY3503524: violations, enforcement and inspections, straight from EPA.
- EPA UCMR 5 data: the PFAS and lithium results (search the file for PWSID NY3503524).
- EPA SDWIS download: the lead results, population and violation records we use.
- The utility's annual water quality report (Consumer Confidence Report): ask Chester Village Water System at (845) 469-2388, or see EPA's guide to finding it.
Found something that doesn't match? Tell us and we'll check it against EPA's records. How we check our data.
Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.