PlainWater
Counties → Pennsylvania

Philadelphia County, Pennsylvania

Water Systems
6
Population Served
1,601,175
Total Violations
447
45 health-based
PFAS Detected
1
of 1 tested

Violation Analysis

100.0%
Systems with Violations
74.5
Avg Violations per System
10.1%
Health-Based Violations

Water Source Types

SW
5 systems (83%)
GW
1 system (17%)

PFAS Contamination

1
Systems Tested
1
PFAS Detected
100.0%
Detection Rate

PFAS (per- and polyfluoroalkyl substances) are persistent chemicals found in drinking water. The EPA has set enforceable limits for several PFAS compounds under UCMR5 monitoring.

Compliance Snapshot

Philadelphia Pennsylvania water systems by violation status, EPA SDWIS records.

No violations on record (0) One or more violations (6)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

Water Systems

System Name Population Violations PFAS
Philadelphia Water Department 1,600,000 130 Detected
Thomas Jefferson Univ Hospital 1,000 62 -
Schuylkill Center for Env Edu 100 71 -
Pure Water 2 Go 25 72 -
Philly Water Works 25 92 -
Nu Water LLC 25 20 -

Other Counties in Pennsylvania

Allegheny County
69 systems · 2,014,752 served · 5,241 violations
Montgomery County
172 systems · 1,274,688 served · 36,032 violations
Bucks County
299 systems · 599,107 served · 59,577 violations
Lancaster County
434 systems · 406,457 served · 39,193 violations
York County
208 systems · 389,602 served · 25,528 violations
Berks County
493 systems · 382,268 served · 54,767 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Philadelphia County? ▼
Philadelphia County has 447 total drinking water violations across 6 water systems, of which 45 are health-based violations. 100.0% of systems have at least one violation.
How many people get water from Philadelphia County systems? ▼
Water systems in Philadelphia County serve approximately 1,601,175 people through 6 public water systems.
Has PFAS been detected in Philadelphia County water? ▼
Of 1 water systems tested for PFAS in Philadelphia County, 1 had PFAS detected (100.0% detection rate).
What types of water sources supply Philadelphia County? ▼
Water systems in Philadelphia County use SW (5 systems), GW (1 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 10.1% of Philadelphia County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.