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Water system · PWSID PA3390024

LCA ALLENTOWN DIVISION

ALLENTOWN, PA · ~118,000 people served

Check your exact address → ALLENTOWN overview
90
Excellent
PurityRadar safety score

PWSID

PA3390024

State

Pennsylvania

City

ALLENTOWN

Population served

118,000

Primary source

Surface water

Score history

▼ 10 points — the score moved from 100 to 90 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 90

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 Nov 2023). Levels in parts per trillion (ppt).

PFOS

Perfluorooctanesulfonic acid

4.4 ppt

limit 4 ppt

Above EPA limit · 1.1×

PFPeA

4.4 ppt

limit —

No federal limit

PFHxA

3.1 ppt

limit —

No federal limit

PFBS

3 ppt

limit —

No federal limit

Violations & enforcement

12

Violations on record

0

Unaddressed

1

Health-based

27

Enforcement actions

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

Monitoring & reporting · EPA contaminant 0200 began Sep 2024 Resolved
Monitoring & reporting · EPA contaminant 0700 began Sep 2024 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jul 2024 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jul 2024 Resolved
Reporting · Lead & Copper Rule began Jun 2016 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2014 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2014 Resolved
Monitoring & reporting · Nitrate began Jan 2002 Resolved
Monitoring & reporting · Bromate began Jan 2002 Resolved
Monitoring & reporting · Nitrate began Jan 2002 Resolved
Other · EPA contaminant 7000 began Jul 2000 Resolved
Treatment technique · EPA contaminant 0200 health-based began Feb 1995 Resolved

Recent enforcement actions

  • State action · SIF Jun 2025
  • State action · SOX Dec 2024
  • State action · SOX Oct 2024
  • State action · SIE Oct 2024
  • State action · SIA Oct 2024
  • State action · SIF Jun 2017
  • State action · SOX Aug 2016
  • State action · SIE Aug 2016

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 Mar 2025

3.53 · max 4.66 mg/L · 52

Copper

1 station · latest Mar 2025

1.36 · max 7.74 ug/L · 27

Manganese

2 stations · latest Sep 2023

9.31 · max 19 ug/l · 24

Fluoride

1 station · latest Sep 2021

0.05 · max 0.07 mg/l · 7

Lead

1 station · latest Nov 2024

2.49 · max 3.65 ug/L · 6

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 PA3390024 — 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.