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Water system · PWSID NH0801010

EXETER WATER DEPT

EXETER, NH · ~12,236 people served

Check your exact address → EXETER overview
72
Good
PurityRadar safety score

PWSID

NH0801010

State

New Hampshire

City

EXETER

Population served

12,236

Primary source

Surface water

Score history

▼ 28 points — the score moved from 100 to 72 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 72

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

PFAS & contaminant readings

Latest detections from EPA’s UCMR5 monitoring (through Oct 2024). Levels in parts per trillion (ppt).

PFOA

Perfluorooctanoic acid

6 ppt

limit 4 ppt

Above EPA limit · 1.5×

PFOS

Perfluorooctanesulfonic acid

4 ppt

limit 4 ppt

Near EPA limit

PFBA

13 ppt

limit —

No federal limit

PFHxA

4 ppt

limit —

No federal limit

PFPeA

4 ppt

limit —

No federal limit

PFBS

3 ppt

limit —

No federal limit

PFHpA

3 ppt

limit —

No federal limit

Violations & enforcement

41

Violations on record

1

Unaddressed

36

Health-based

154

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Nov 2019. Official EPA record →

Other · EPA contaminant 7500 began Jan 2015 Unaddressed
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2019 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2019 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2019 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2018 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2018 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2018 Resolved
Monitoring & reporting · EPA contaminant 0999 began Apr 2018 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2018 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2017 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2017 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2017 Resolved

Recent enforcement actions

  • State action · SOX Nov 2019
  • State action · SOX Nov 2019
  • State action · SOX Nov 2019
  • State action · SOX Nov 2019
  • State action · SOX Nov 2019
  • State action · SOX Nov 2019
  • State action · SOX Nov 2019
  • State action · SOX Nov 2019

This profile is built from EPA public records for system NH0801010 — 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.