York Water Company
EPA ID: PA7670100 · 206,762 people served · 40 ZIP codes
Where compliant utilities carry no open actions, York Water Company shows 2 active EPA violations in the federal database for a service population of approximately 206,762.
Data: EPA SDWIS Last verified: 2026-04-02
Compliance Trajectory
Worsening · Risk tier: High · 95% chance of violation in next 12 months
Violations went from 43 (2022) to 3 (2023). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for York Water Company Source: EPA SDWIS service area boundaries.
Service area boundary — Grade D
Service Area Demographics
The York Water Company serves a community with a median household income of $85,455 and an estimated 483,613 residents across its service area. Approximately 63% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
🌊 Where Does Your Water Come From?
York Water Company'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.
About 1% of homes in Adams County, Pennsylvania rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Superfund Proximity Note: This service area ranks in the 68th percentile nationally for proximity to Superfund (NPL) sites.
Infrastructure Risk
Detected Contaminants
How York Water Company compares to EPA limits
What This Means For You
Haloacetic Acids (HAA5) at 2 mg/L exceeds the EPA maximum of 0.06 mg/L. Cancer risk; reproductive & developmental effects. Consider granular activated carbon (GAC) filtration.
Chlorite at 5 mg/L exceeds the EPA maximum of 1 mg/L. Anemia and nervous system effects in infants and children. Consider ferrous sulfate reduction filtration.
Consumer Confidence Report Rule at 4 mg/L exceeds the EPA maximum of mg/L.
Contaminant 2383 at 3 mg/L exceeds the EPA maximum of mg/L.
Contaminant 0700 at 3 mg/L exceeds the EPA maximum of mg/L.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 64 detections recorded. 18 exceed federal EPA limits (4 ppt for PFOA/PFOS).
Haloacetic Acids (HAA5) was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
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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
YORK WATER CO (EPA ID: PA7670100) is a community water system in Pennsylvania that serves approximately 206,762 people from surface water sources.
This system provides water to 40 ZIP codes across 32 communities.
Average Home Safety Score: D (49/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| August 1, 2025 | Fecal Coliform | Monitoring | Resolved |
| July 11, 2025 | Consumer Confidence Report Rule | Monitoring | Unresolved |
| February 1, 2025 | Contaminant 0700 | Monitoring | Resolved |
| July 1, 2024 | Surface Water Treatment Rule | Monitoring | Resolved |
| July 1, 2024 | Chlorite | Monitoring | Resolved |
| March 1, 2024 | Contaminant 0700 | Monitoring | Resolved |
| February 1, 2024 | Contaminant 0700 | Monitoring | Resolved |
| February 1, 2024 | Revised Total Coliform Rule | Monitoring | Resolved |
| January 1, 2024 | Revised Total Coliform Rule | Monitoring | Resolved |
| July 1, 2023 | Contaminant 0700 | Monitoring | Unresolved |
| July 1, 2023 | Chlorite | Monitoring | Resolved |
| April 11, 2023 | Lead and Copper Rule | Monitoring | Resolved |
| April 1, 2023 | Copper | Monitoring | Resolved |
| April 1, 2023 | Haloacetic Acids (HAA5) | Monitoring | Unresolved |
| January 1, 2023 | Contaminant 1085 | Monitoring | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Chlorite | Disinfection Byproducts | 5 | No |
| Consumer Confidence Report Rule | Reporting Failure | 4 | Yes |
| Copper | Inorganic | 3 | No |
| Contaminant 2383 | Other Violation | 3 | No |
| Contaminant 0700 | Other Violation | 3 | No |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 2 | No |
| Revised Total Coliform Rule | Microbiological | 2 | No |
| Contaminant 1085 | Other Violation | 1 | No |
| Combined Radium | Radionuclides | 1 | No |
| Surface Water Treatment Rule | Treatment Failure | 1 | No |
| Lead and Copper Rule | Treatment Failure | 1 | No |
| Fecal Coliform | Microbiological | 1 | No |
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 17401 | 0.0094 mg/L | No | N/A |
| 17402 | 0.0094 mg/L | No | N/A |
| 17403 | 0.0094 mg/L | No | N/A |
| 17404 | 0.0094 mg/L | No | N/A |
| 17405 | 0.0094 mg/L | No | N/A |
| 17406 | 0.0094 mg/L | No | N/A |
| 17407 | 0.0094 mg/L | No | N/A |
| 17408 | 0.0094 mg/L | No | N/A |
| 17415 | 0.0094 mg/L | No | N/A |
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: 36 ZIP codes confirmed via EPA Community Water System Service Area Boundaries v3 plus 4 additional ZIPs inferred from SDWIS registry data. The EPA-confirmed set is the most reliable; SDWIS-inferred entries may be narrower than the real deployment area.
This system serves 40 ZIP codes:
17301 · 17311 · 17313 · 17315 · 17316 17318 · 17319 · 17322 · 17325 · 17327 17329 · 17331 · 17340 · 17342 · 17345 17347 · 17349 · 17350 · 17355 · 17356 17358 · 17360 · 17361 · 17362 · 17363 17364 · 17366 · 17368 · 17370 · 17371 17372 · 17401 · 17402 · 17403 · 17404 17405 · 17406 · 17407 · 17408 · 17415
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for York Water Company (PA7670100) on EPA.gov.
Frequently Asked Questions
Is York Water Company water safe to drink?
York Water Company has recorded 1 health-based violation in the past 5 years. While the system is required to treat water to meet federal standards, you may want to consider additional precautions such as a certified water filter.
How many people does York Water Company serve?
York Water Company serves approximately 206,762 people across 40 ZIP codes in Pennsylvania.
Where does York Water Company get its water?
The primary water source is surface water.
Federal UCMR5 PFAS Monitoring: Tested Clean
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were detected.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.
How Water Systems Appear in Rankings
Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.
Frequently Asked Questions
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
York Water Company (EPA ID: PA7670100) — request the latest Consumer Confidence Report or ask about specific contaminants.