Windsor, NH Tap Water Quality 2026

Water quality report for Windsor, NH — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Windsor's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Wediko School PWSID: NH2552010 Updated: 2026 Q2

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Lead above the federal action level

Lead is 46.00 ppb, 307% of the action level. PFAS has never been sampled at this system.

Windsor earns an F for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: 46.00 ppb — 307% of the federal action level

PFAS never sampled at this system

11 violations since 2015, 5 health-based

1 violation currently open

Windsor's lead level vs. all New Hampshire community water systems

0 ppb5 ppb10 ppb15 ppb

Lead level: 46.00 ppb — 100% of the federal action level

✓ Lower lead than 14% of New Hampshire utilities

Population Served

115

~20 connections

Water Source

Groundwater

Drawn from wells — SDWIS source code GW

Active Violations

1 open of 11 since 2015

Lead & Copper Testing

Lead (Pb)

90th percentile of tap samples collected across the distribution system

100% of EPA action level

46.00 ppb

Action level: 15 ppb

The 90th-percentile lead result is 46.00 ppb, 307% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home.

Contaminant Violations (2015–Present)

Contaminant	Type	Measured	Limit	Period	Status
Revised Total Coliform Rule	TREATMENT TECHNIQUE	—	—	2025	Resolved
Revised Total Coliform Rule	REPORTING FAILURE	—	—	2025	Resolved
Public Notice	OTHER	—	—	2024	Resolved
Lead and Copper Rule	TREATMENT TECHNIQUE	—	TT	2023	Unaddressed
Lead and Copper Rule	TREATMENT TECHNIQUE	—	TT	2023	Resolved
Lead and Copper Rule	TREATMENT TECHNIQUE	—	TT	2022	Resolved
Lead and Copper Rule	MONITORING AND REPORTING	—	TT	2022	Resolved
Lead and Copper Rule	MONITORING AND REPORTING	—	TT	2021	Resolved
Lead and Copper Rule	MONITORING AND REPORTING	—	TT	2020	Resolved
Public Notice	OTHER	—	—	2019	Resolved
Lead and Copper Rule	TREATMENT TECHNIQUE	—	TT	2019	Resolved

Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

1 violation remains open, out of 11 recorded since 2015 (5 health-based).

About the Main Water System

Utility Wediko School

PWSID NH2552010

Water source Groundwater — Drawn from wells — SDWIS source code GW

Population served 115

Service connections 20

Systems serving this area 1

Regulator State primacy agency

Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Windsor tap water safe to drink? ▼

No federal limit is exceeded on record. 1 violation(s) remain open. Lead is 46.00 ppb, 307% of the action level.

Does Windsor water have PFAS? ▼

This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.

Who supplies water to Windsor? ▼

Wediko School (PWSID NH2552010). Groundwater. Drawn from wells — SDWIS source code GW

When was this system last inspected? ▼

It was last inspected on 2025-08-12. No significant deficiencies were recorded.

What Should Windsor Residents Do?

Consider a filter certified for lead

Look for NSF/ANSI 53 certification for lead reduction.

Check for a lead service line

Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.

Follow the open violation

This system has an unresolved violation. Contact the supplier for its corrective-action schedule.

Nearby Cities in New Hampshire

Manchester, Nh Tap Water Quality 2026 Hillsborough Nashua, Nh Tap Water Quality 2026 Hillsborough Merrimack, Nh Tap Water Quality 2026 Hillsborough Hudson, Nh Tap Water Quality 2026 Hillsborough Milford, Nh Tap Water Quality 2026 Hillsborough Litchfield, Nh Tap Water Quality 2026 Hillsborough