States › Pennsylvania › Allegheny County

Allegheny County, PA Water Quality

Water quality data for 38 public water systems serving Allegheny County, Pennsylvania — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 38 water systems · 133 cities
✅
Generally Safe — Most Systems Performing Well

The majority of water systems have no active violations and lead levels well below the federal action level.

B

Allegheny County Earns a B

Allegheny County: 133 communities across 38 water systems. 99.2% have no open violations.

  • Median lead where detected: 4.00 ppb
  • 98 communities with a lead detection, 35 reporting none detected
  • 2 communities with PFAS above the federal limit
  • 27 with significant inspection deficiencies
  • 99.2% of communities have no open violations
4 ppb
Median Lead Level
County-wide, 90th percentile
38
Water Systems
Active CWS & NTNCWS
99%
Violation-Free
No active violations on record
How we grade counties: MyWaterIQ uses EPA SDWIS enforcement data — actual MCL violations and lead test results — not the aspirational MCLG targets used by some sites. A grade reflects real compliance history, not theoretical risk. Learn more →

Cities by Water Quality

⭐ Best Performing
  • Shaler
    1.26 ppb
    No federal limits exceeded on record
    A
  • Hampton
    1.26 ppb
    No federal limits exceeded on record
    A
  • Allison Park
    1.26 ppb
    No federal limits exceeded on record
    A
  • Robinson
    2.17 ppb
    No federal limits exceeded on record
    A
  • Richland
    1.39 ppb
    No federal limits exceeded on record
    A
⚠ Needs Attention
  • Springdale
    3.00 ppb
    Copper above the 1,300 ppb action level
    D
  • Braddock
    22.62 ppb
    Lead above the 15 ppb action level
    D
  • East Deer
    20.00 ppb
    Lead above the 15 ppb action level
    D
  • Moon
    1.87 ppb
    PFAS above the limit at 1 of 1 sampling points
    C
  • Ross
    Not detected
    1 significant inspection deficiency
    C
County Lead Level — Median 4 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 4 ppb — 26.7% of the federal action level
Systems by Lead Level
Under 5 ppb
75
5 – 10 ppb
19
10 – 15 ppb
4
No Data
35

All Cities in Allegheny County

Pittsburgh 2.00 ppb A
Mount Lebanon 4.00 ppb A
Bethel Park municipality 4.00 ppb A
Ross Not detected C
McCandless Not detected C
Shaler 1.26 ppb A
Monroeville municipality 1.50 ppb B
Moon 1.87 ppb C
Plum 3.70 ppb A
Penn Hills 9.78 ppb B
Baldwin 4.00 ppb A
Upper St. Clair 4.00 ppb A
West Mifflin 4.00 ppb A
Hampton 1.26 ppb A
South Fayette 4.00 ppb A
McKeesport Not detected A
Scott 4.00 ppb A
North Fayette 0.95 ppb A
Allison Park 1.26 ppb A
Franklin Park Not detected C
Whitehall 4.00 ppb A
Robinson 2.17 ppb A
Pine Not detected C
Wilkinsburg 9.78 ppb B
South Park 4.00 ppb A
Elizabeth 4.00 ppb A
Jefferson Hills 4.00 ppb A
Richland 1.39 ppb A
Munhall 4.00 ppb A
Harrison 1.73 ppb A
Brentwood 4.00 ppb A
Collier 4.00 ppb A
Marshall Not detected C
Swissvale 9.78 ppb B
Kennedy Not detected C
Pleasant Hills 4.00 ppb A
Bellevue Not detected C
Castle Shannon 4.00 ppb A
Dormont 4.00 ppb A
Carnegie 4.00 ppb A
West Deer 0.46 ppb A
White Oak Not detected A
Ohio Not detected C
North Versailles Not detected A
Oakmont 0.46 ppb A
West View Not detected C
O'Hara Not detected A
Forest Hills 9.78 ppb B
Stowe Not detected C
Wilkins 9.78 ppb B
Clairton municipality 4.00 ppb A
Crafton 4.00 ppb A
Findlay Not detected B
McKees Rocks Not detected C
Coraopolis 4.33 ppb B
Fox Chapel Not detected A
Turtle Creek 9.78 ppb B
Duquesne Not detected C
Green Tree 4.00 ppb A
Bridgeville 4.00 ppb A
Avalon Not detected C
Indiana 0.46 ppb A
Glassport 4.00 ppb A
North Braddock 9.78 ppb B
Tarentum 1.81 ppb B
Sewickley 5.49 ppb C
Port Vue Not detected A
Springdale 1.72 ppb A
Ingram 4.00 ppb A
Mount Oliver 4.00 ppb A
Millvale 2.00 ppb A
Brackenridge 1.68 ppb A
Reserve 1.47 ppb A
Churchill 9.78 ppb B
Edgewood 9.78 ppb B
Pitcairn 9.78 ppb B
Forward Not detected B
Homestead 4.00 ppb A
Etna 1.26 ppb A
Emsworth Not detected C
Verona 0.46 ppb A
Crescent Not detected B
Liberty 4.00 ppb A
Imperial Not detected B
Fawn 1.19 ppb B
Harmar 3.00 ppb B
Aspinwall 7.50 ppb B
Baldwin 4.00 ppb A
Sharpsburg 2.00 ppb A
East Pittsburgh 9.78 ppb B
Ben Avon Not detected C
West Homestead 4.00 ppb A
Rankin 9.78 ppb B
Aleppo 0.80 ppb B
East McKeesport 3.48 ppb A
Wilmerding 3.48 ppb A
Braddock Hills 9.78 ppb B
Braddock 22.62 ppb D
Cheswick 10.00 ppb B
Leet Not detected A
Dravosburg 4.00 ppb A
Edgeworth Not detected A
Versailles Not detected A
Elizabeth 4.00 ppb A
Oakdale 14.00 ppb B
Heidelberg 4.00 ppb A
Bell Acres Not detected A
East Deer 20.00 ppb D
Bradford Woods Not detected C
Whitaker 4.00 ppb A
Leetsdale Not detected A
Blawnox 2.00 ppb B
Frazer 1.19 ppb B
Neville 1.67 ppb A
Sturgeon 0.95 ppb A
Springdale 3.00 ppb D
Lincoln 4.00 ppb A
Sewickley Heights 5.49 ppb C
Chalfant 9.78 ppb B
Noblestown 0.95 ppb A
Enlow 0.95 ppb A
Pennsbury Village 4.00 ppb A
Wall 3.48 ppb A
Glen Osborne 5.49 ppb C
Thornburg 4.00 ppb A
Rosslyn Farms 4.00 ppb A
Kilbuck Not detected C
West Elizabeth 4.00 ppb A
South Versailles Not detected A
Sewickley Hills Not detected C
Glenfield 0.80 ppb B
Haysville 5.49 ppb C
Ben Avon Heights Not detected C
Showing 133 cities
No active violations Active violations

About Allegheny County Drinking Water

Allegheny County is served by 38 water systems covering 133 communities. 99% have no open violations.

Of the communities reporting lead results, 98 recorded a detection, with a median of 4.00 ppb — 27% of the federal action level. 35 reported none detected, which means below the laboratory limit rather than an absence of lead.

2 of 133 communities have PFAS above the limits EPA set in 2024, measured as a running annual average at each sampling point. State inspectors recorded significant deficiencies at 27 of them.

Frequently Asked Questions

Is Allegheny County tap water safe to drink?▼
99% of communities have no open violation. 2 of 133 have PFAS above the federal limit, which is the main open concern.
What is the lead level in Allegheny County?▼
Among communities with a detection the median is 4.00 ppb, 27% of the 15 ppb action level. 35 reported none detected and 0 reported no result.
How many water systems serve Allegheny County?▼
38 community water systems serve 133 communities here.
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