Ocwa
EPA ID: NY3304336 · 350,000 people served · 51 ZIP codes
ZipCheckup's reading of EPA records for Ocwa (NY3304336): no drinking-water violations recorded since 2021. Within the EPA records available for it, Ocwa shows no violations; the system serves about 350,000 people.
Data: EPA SDWIS
Service Area Map
Coverage area for Ocwa Source: EPA SDWIS service area boundaries.
Service area boundary - average Home Safety grade of mapped ZIPs: B
Demographics of ZIP Codes Served
The ZIP codes associated with Ocwa have a median household income of $81,212 and about 532,792 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 74% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: On average, 33% of census tracts in the counties mapped to this service area are designated disadvantaged by the federal Climate and Economic Justice Screening Tool (CEJST, 2022 version). Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
🌊 Where Does Your Water Come From?
Ocwa's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
Superfund Proximity Note: This service area ranks in the 64th percentile nationally for proximity to Superfund (NPL) sites.
Infrastructure Risk
PFAS in ZIP Codes This System Serves
PFAS ("forever chemicals") have been reported in samples from water systems associated with the ZIP codes in this system's area. These results can come from other water systems serving the same ZIP codes; check the UCMR5 section for any results reported for this system. 51 detections recorded.
Comparable Water Systems
Similar-sized systems in New York
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Ocwa (EPA ID: NY3304336) is a community water system in New York that serves approximately 350,000 people from surface water sources.
This system provides water to 51 ZIP codes across 41 communities.
ZIP-Area Home Safety Context: B (70/100)
This is the average Home Safety Score for 33 of 51 service-area ZIP codes with all required score domains observed. It is not a grade for the water utility.
Model 4.0.0 uses SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the UCMR 5 PFAS MCL screen, EPA radon zone, and annual EPA AirData AQI across three equally weighted domains. Missing required evidence suppresses the score.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.007 mg/L | No | 2025-12-31 |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Radon Risk in Service Area
37 of 51 ZIP records with known zones are in EPA Radon Zone 1. 14 of 51 ZIP records with known zones are in EPA Radon Zone 2.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by NY or modeled from parcel and building-footprint data.
This system serves 51 ZIP codes:
13027 · 13029 · 13030 · 13031 · 13032 13035 · 13036 · 13037 · 13039 · 13041 13042 · 13057 · 13060 · 13066 · 13069 13074 · 13076 · 13078 · 13080 · 13082 13084 · 13088 · 13090 · 13104 · 13108 13110 · 13112 · 13115 · 13116 · 13120 13126 · 13131 · 13132 · 13135 · 13152 13157 · 13159 · 13164 · 13167 · 13204 13205 · 13206 · 13208 · 13209 · 13211 13212 · 13214 · 13215 · 13219 · 13308 13316
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Ocwa (NY3304336) on EPA.gov.
Frequently Asked Questions
Is Ocwa water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Ocwa in the inclusive 2021-2026 record-year window. This is a compliance-record finding, not a guarantee about water at a specific tap.
How many people does Ocwa serve?
Ocwa serves approximately 350,000 people across 51 ZIP codes in New York.
Where does Ocwa get its water?
The primary water source is surface water.
Federal UCMR5 PFAS Monitoring: Detected
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). PFAS compounds were detected; the table compares each one with the EPA MCL where one exists (April 2024 rule, compliance required from 2029) and with this state's enforceable standard where one exists.
EPA's April 2024 PFAS rule sets MCLs of 4 ppt for PFOA and PFOS and 10 ppt for PFHxS, PFNA and HFPO-DA (GenX); water systems must comply from 2029. Other PFAS compounds have no individual federal MCL. A state standard is shown only where this system's state has its own enforceable PFAS limit. Detection results are EPA UCMR5 samples, not a measurement at your tap.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Ocwa, NY: Serves 350K People. https://zipcheckup.com/water-system/ny3304336/
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url = {https://zipcheckup.com/water-system/ny3304336/}
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