Lincoln, NH Tap Water Quality 2026

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

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

Main Utility: Lincoln Water Works PWSID: NH1351010 Updated: 2026 Q2

✅

No federal limits exceeded on record

Lead is 7.00 ppb, 47% of the action level and no violations are open. PFAS has never been sampled at this system.

Lincoln earns a C for water quality

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

Lead: 7.00 ppb — 47% of the federal action level

PFAS never sampled at this system

7 violations since 2015, 6 health-based

No violations currently open

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

0 ppb5 ppb10 ppb15 ppb

Lead level: 7.00 ppb — 47% of the federal action level

✓ Lower lead than 76% of New Hampshire utilities

Population Served

1574

~2000 connections

Water Source

Surface water

Drawn from surface water — SDWIS source code SW

Active Violations

7 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)

90th percentile of tap samples collected across the distribution system

47% of EPA action level

7.00 ppb

Action level: 15 ppb

Copper (Cu)

90th percentile of tap samples. SDWIS reports a copper figure only when a system exceeds the action level, so any value here is an exceedance.

118.5% of EPA action level

1,540 ppb

Action level: 1,300 ppb

The 90th-percentile lead result is 7.00 ppb, 47% 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. Copper reached the action level here; a copper figure appears in SDWIS only when a system triggers it.

Contaminant Violations (2015–Present)

Contaminant	Type	Measured	Limit	Period	Status
CARBON, TOTAL	MONITORING AND REPORTING	—	TT	2023	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.063 MG/L	0.060 mg/L	2019	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.062 MG/L	0.060 mg/L	2018	Resolved
TTHM	MCL EXCEEDANCE	0.081 MG/L	0.080 mg/L	2018	Resolved
TTHM	MCL EXCEEDANCE	0.084 MG/L	0.080 mg/L	2018	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.062 MG/L	0.060 mg/L	2018	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.072 MG/L	0.060 mg/L	2017	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

7 violations are on record since 2015, of which 6 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Lincoln Water Works

PWSID NH1351010

Water source Surface water — Drawn from surface water — SDWIS source code SW

Population served 1,574

Service connections 2,000

Systems serving this area 3

Regulator State primacy agency

Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Lincoln tap water safe to drink? ▼

No federal limit is exceeded on record. No violations are currently open. Lead is 7.00 ppb, 47% of the action level.

Does Lincoln 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 Lincoln? ▼

Lincoln Water Works (PWSID NH1351010), one of 3 systems serving this area. Surface water. Drawn from surface water — SDWIS source code SW

When was this system last inspected? ▼

It was last inspected on 2025-07-11. No significant deficiencies were recorded.

What Should Lincoln 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.

Flush before drinking

If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

Nearby Cities in New Hampshire

Lebanon, Nh Tap Water Quality 2026 Grafton Hanover, Nh Tap Water Quality 2026 Grafton Plymouth, Nh Tap Water Quality 2026 Grafton Littleton, Nh Tap Water Quality 2026 Grafton Bristol, Nh Tap Water Quality 2026 Grafton Bethlehem, Nh Tap Water Quality 2026 Grafton