NORTH CHAUTAUQUA COUNTY WATER DISTRICT

MAYVILLE, NY · ~3,100 people served

Check your exact address → MAYVILLE overview

100

Excellent

PurityRadar safety score

PWSID

NY0630144

State

New York

City

MAYVILLE

Population served

3,100

Primary source

SWP

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 100

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Nov 2025. Official EPA record →

Reporting · EPA contaminant 5200 began Oct 2024 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Oct 2023 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Oct 2023 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2022 Resolved

Monitoring · Lead & Copper Rule began Apr 2021 Resolved

Monitoring · Lead & Copper Rule began Jul 2020 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2020 Resolved

Recent enforcement actions

State action · SOX Nov 2025
EPA/federal action · EFL May 2025
State action · SIA Nov 2024
State action · SIE Nov 2024
State action · SOX Jan 2024
State action · SFJ Jan 2024
State action · SFJ Jan 2024
State action · SFM Jan 2024

This profile is built from EPA public records for system NY0630144 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.