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Water system · PWSID PA3390073

LCA WLSA CENTRAL DIVISION

ALLENTOWN, PA · ~47,693 people served

Check your exact address → ALLENTOWN overview
91
Excellent
PurityRadar safety score

PWSID

PA3390073

State

Pennsylvania

City

ALLENTOWN

Population served

47,693

Primary source

SWP

Score history

▼ 9 points — the score moved from 100 to 91 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 91

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 Jan 2024). Levels in parts per trillion (ppt).

PFOA

Perfluorooctanoic acid

4.3 ppt

limit 4 ppt

Above EPA limit · 1.1×

PFHxS

Perfluorohexanesulfonic acid

3.1 ppt

limit 10 ppt

Below EPA limit

PFBS

3.6 ppt

limit —

No federal limit

PFPeA

3.5 ppt

limit —

No federal limit

PFHxA

3.3 ppt

limit —

No federal limit

Violations & enforcement

79

Violations on record

1

Unaddressed

4

Health-based

62

Enforcement actions

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

Reporting · Lead & Copper Rule began Jul 2025 Unaddressed
Monitoring & reporting · Nitrate began Jan 2024 Resolved
Monitoring & reporting · Nitrite began Jan 2024 Resolved
Monitoring & reporting · EPA contaminant 0700 began Jun 2023 Resolved
Monitoring & reporting · Nitrate began Oct 2022 Resolved
Monitoring & reporting · Nitrite began Oct 2022 Resolved
Monitoring & reporting · Nitrate began Oct 2022 Resolved
Monitoring & reporting · Nitrite began Oct 2022 Resolved
Monitoring & reporting · EPA contaminant 0700 began Aug 2021 Resolved
Max contaminant level (MCL) · EPA contaminant 2039 health-based began Jul 2019 Resolved
Max contaminant level (MCL) · Lead & Copper Rule health-based began Aug 2018 Resolved
Monitoring & reporting · Fluoride began Jan 2018 Resolved

Recent enforcement actions

  • State action · SIE Aug 2025
  • State action · SIA Aug 2025
  • State action · SIF Mar 2025
  • State action · SOX Oct 2024
  • State action · SIF Aug 2024
  • State action · SIA Apr 2024
  • State action · SIE Apr 2024
  • State action · SOX Aug 2023

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

Fluoride

1 station · latest Sep 2021

0.03 · max 0.04 mg/l · 7

Manganese

1 station · latest Sep 2021

4.37 · max 5.08 ug/l · 7

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 PA3390073 — 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.