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Water system · PWSID PA3390065

SWT MAIN SYSTEM

ALLENTOWN, PA · ~14,500 people served

Check your exact address → ALLENTOWN overview
92
Excellent
PurityRadar safety score

PWSID

PA3390065

State

Pennsylvania

City

ALLENTOWN

Population served

14,500

Primary source

SWP

Score history

▼ 8 points — the score moved from 100 to 92 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 92

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

PFOA

Perfluorooctanoic acid

4 ppt

limit 4 ppt

Near EPA limit

PFPeA

3.6 ppt

limit —

No federal limit

PFHxA

3.4 ppt

limit —

No federal limit

Violations & enforcement

119

Violations on record

0

Unaddressed

23

Health-based

167

Enforcement actions

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

Monitoring & reporting · Lead & Copper Rule began Oct 2025 Resolved
Monitoring · Lead & Copper Rule began Sep 2024 Resolved
Monitoring & reporting · EPA contaminant 0999 began Sep 2024 Resolved
Monitoring & reporting · EPA contaminant 0200 began Sep 2024 Resolved
Other · EPA contaminant 7000 began Jul 2020 Resolved
Monitoring & reporting · EPA contaminant 0700 began Mar 2017 Resolved
Monitoring & reporting · EPA contaminant 2063 began Jan 2017 Resolved
Treatment technique · EPA contaminant 0200 health-based began Sep 2016 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 2015 Resolved
Monitoring & reporting · Total coliform began Aug 2015 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2015 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2015 Resolved

Recent enforcement actions

  • State action · SOX Dec 2025
  • State action · SIA Oct 2025
  • State action · SOX Dec 2024
  • State action · SIA Oct 2024
  • State action · SIE Oct 2024
  • State action · SOX Sep 2020
  • State action · SIA Sep 2020
  • State action · SIF May 2018

This profile is built from EPA public records for system PA3390065 — 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.