Home/ Directory/ PA/ N MIDDLETON WATER AUTH

Water system · PWSID PA7210049

N MIDDLETON WATER AUTH

CARLISLE, PA · ~8,455 people served

Check your exact address → CARLISLE overview

Action needed

PurityRadar safety score

PWSID

PA7210049

State

Pennsylvania

City

CARLISLE

Population served

8,455

Primary source

Surface water

Score history

▼ 66 points — the score moved from 100 to 34 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 34

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 Sep 2025). Levels in parts per trillion (ppt).

PFOS

Perfluorooctanesulfonic acid

17 ppt

limit 4 ppt

Above EPA limit · 4.2×

PFOA

Perfluorooctanoic acid

8 ppt

limit 4 ppt

Above EPA limit · 2.0×

PFHxS

Perfluorohexanesulfonic acid

3.5 ppt

limit 10 ppt

Below EPA limit

PFBS

7.8 ppt

limit —

No federal limit

PFHxA

5.5 ppt

limit —

No federal limit

PFPeA

3.8 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

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

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

Monitoring & reporting · Haloacetic acids (HAA5) began Apr 2022 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Apr 2022 Resolved

Reporting · Lead & Copper Rule began Jun 2020 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jul 2019 Resolved

Other · EPA contaminant 7500 began Apr 2019 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2018 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2018 Resolved

Treatment technique · EPA contaminant 0200 health-based began Oct 2017 Resolved

Other · EPA contaminant 7500 began Jun 2017 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Oct 2016 Resolved

Recent enforcement actions

State action · SIF Feb 2025
State action · SIF Aug 2023
State action · SOX Nov 2022
State action · SIA Oct 2022
State action · SFJ Aug 2022
State action · SIE Aug 2022
State action · SOX Aug 2022
State action · SIE Aug 2022

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Nitrate

1 station · latest Dec 2022

0 · max 2 mg/L · 15

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system PA7210049 — 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.