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Water system · PWSID PA1510001

PHILADELPHIA WATER DEPARTMENT

PHILADELPHIA, PA · ~1,600,000 people served

Check your exact address → PHILADELPHIA overview

Fair

PurityRadar safety score

PWSID

PA1510001

State

Pennsylvania

City

PHILADELPHIA

Population served

1,600,000

Primary source

Surface water

Score history

▼ 43 points — the score moved from 100 to 57 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 57

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

7.6 ppt

limit 4 ppt

Above EPA limit · 1.9×

PFOS

Perfluorooctanesulfonic acid

4.5 ppt

limit 4 ppt

Above EPA limit · 1.1×

PFNA

Perfluorononanoic acid

4.5 ppt

limit 10 ppt

Below EPA limit

PFBS

10 ppt

limit —

No federal limit

PFBA

7.6 ppt

limit —

No federal limit

PFPeA

3.9 ppt

limit —

No federal limit

PFHxA

3.6 ppt

limit —

No federal limit

PFHpA

3.1 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Feb 2026. Official EPA record →

Monitoring & reporting · EPA contaminant 0300 began Sep 2025 Resolved

Monitoring & reporting · EPA contaminant 0300 began Dec 2024 Resolved

Monitoring & reporting · EPA contaminant 0300 began Jun 2023 Resolved

Monitoring & reporting · EPA contaminant 0300 began Jun 2022 Resolved

Monitoring & reporting · EPA contaminant 0300 began Apr 2018 Resolved

Monitoring & reporting · EPA contaminant 0300 began Nov 2016 Resolved

Monitoring & reporting · EPA contaminant 0300 began Oct 2016 Resolved

Monitoring & reporting · EPA contaminant 0300 began Apr 2015 Resolved

Monitoring & reporting · EPA contaminant 0300 began May 2014 Resolved

Monitoring & reporting · EPA contaminant 0300 began Apr 2013 Resolved

Monitoring & reporting · EPA contaminant 0300 began May 2012 Resolved

Monitoring & reporting · EPA contaminant 0300 began Apr 2012 Resolved

Recent enforcement actions

State action · SOX Feb 2026
State action · SIA Oct 2025
State action · SOX Feb 2025
State action · SIA Feb 2025
State action · SIF Jul 2024
State action · SIA Jul 2023
State action · SIE Jul 2023
State action · SOX Jul 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

Nitrate

6 stations · latest Oct 2025

1.87 · max 9.28 mg/L · 336

Copper

5 stations · latest Oct 2025

2.05 · max 32.2 ug/L · 284

Manganese

5 stations · latest Mar 2025

33 · max 721 ug/L · 177

Lead

5 stations · latest Oct 2025

0.655 · max 83.2 ug/L · 148

Fluoride

3 stations · latest Aug 2022

0.07 · max 0.13 mg/l · 9

Arsenic

2 stations · latest Aug 2022

0.575 · max 1.1 ug/l · 4

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 PA1510001 — 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.