Tapcensus

Pennsylvania

Allegheny County drinking water quality

70 active public water systems serve 2,017,752 people in Allegheny County. 22 are compliant, 48 had at least one EPA violation in the past three years, 2 are designated serious violators, and 4 carry a health flag.

Active systems 70 39 community systems
People served 2M by public water systems
Systems with violations 48 69% of active systems, past 3 years
Serious violators 2 4 systems carry a health flag

Needs attention

Tarentum Boro Water Dept PA5020055 · Community water system · Serves 4,927 6 rules violated in the past three years. Unresolved: Carbon, Total, Public Notification Rule, and TTHM (Total Trihalomethanes).
East Deer Twp Water Dept PA5020013 · Community water system · Serves 2,000 3 rules violated in the past three years. Unresolved: Public Notification Rule and TTHM (Total Trihalomethanes).
Duquesne Water Dept PA5020012 · Community water system · Serves 5,565 4 rules violated in the past three years. Unresolved: Groundwater Rule (GWR) and Public Notification Rule.
Township of Springdale PA5020021 · Community water system · Serves 1,600 4 rules violated in the past three years. Unresolved: Groundwater Rule (GWR), Revised Total Coliform Rule (RTCR), TTHM (Total Trihalomethanes), and Total Haloacetic Acids (HAA5).
Glassmere Food Mart 252 PA5020950 · Transient non-community system · Serves 100 1 rule violated in the past three years. Unresolved: Revised Total Coliform Rule (RTCR).
Lennys Place PA5020863 · Transient non-community system · Serves 100 3 rules violated in the past three years. Unresolved: Public Notification Rule and Revised Total Coliform Rule (RTCR).

Community water systems

39 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
PA Amer Water Co-Pittsburgh
 686,000 0 0
Pittsburgh Water & Sewer Auth
 520,000 3 0
West View Water Authority
 200,000 1 0
Wilkinsburg-Penn JT Water Auth
 125,000 3 0
Hampton Shaler Water Authority
 61,949 1 0
Monroeville Municipal Auth
 48,500 0 0
Oakmont Water Authority
 39,901 0 0
Moon Twp Muni Auth
 38,000 4 0
West Cnty Muni Auth-McKeesport
 32,644 3 0
Plum Boro Muni Auth
 27,500 2 0
Western Allegheny County Mun a
 19,031 2 0
Fox Chapel Auth
 18,500 0 0
Robinson Twp Muni Auth
 16,354 4 0
Harrison Twp Water Auth
 13,411 1 0
Findlay Twp Municipal Auth
 11,460 6 0
Richland Twp Water Authority
 10,190 0 0
Edgeworth Boro Muni Auth
 7,781 2 0
Sewickley Boro Water Auth
 6,800 5 1
Neville Twp Water Dept
 6,750 0 0
Coraopolis Water & Sewer Auth
 5,804 2 0
Duquesne Water Dept
 5,565 4 2
Tarentum Boro Water Dept
 4,927 6 0
Fawn Frazer JT Water Auth
 4,650 3 0
Brackenridge Boro Water Dept
 3,700 2 0
Springdale Boro Water Dept
 3,405 0 0
Reserve Twp Water Dept
 3,204 0 0
Harmar Twp Muni Auth
 3,200 0 0
Aspinwall Boro Water Dept
 3,151 3 1
VA Healthcare System Heinz
 3,112 0 0
Aleppo Twp Auth
 2,200 1 0
Blawnox Boro Water Dept
 2,200 4 0
East Deer Twp Water Dept
 2,000 3 1
Cheswick Boro Water Dept
 1,861 2 0
Braddock Boro Water Auth
 1,708 1 0
Township of Springdale
 1,600 4 1
Oakdale Boro Water Dept
 1,459 2 0
Virginia Hills PA LLC
 843 2 0
Redwood Estates PA LLC
 725 2 0
Carson Towers
 266 2 1
Non-community systems (31: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Pittsburgh Intl Airport
 26,915 5 0
Upmc Presbyterian
 8,200 2 0
VA Pittsburgh UD
 6,701 1 0
Upmc Magee Womens Hospital
 4,900 3 1
Upmc Shadyside Hillman Campus
 4,750 1 0
Upmc Montefiore
 4,500 2 0
Childens Hospital Upmc
 3,000 1 1
Upmc Western Psychiatric Inst
 2,645 3 1
Allegheny General Hospital
 2,595 0 0
Jefferson Hospital
 2,470 0 0
Ahn Wexford Hospital
 1,072 0 0
Allegheny Valley Hospital
 908 0 0
Davids Diner
 900 1 0
Heritage Valley Sewickley
 750 0 0
West Penn Hospital
 500 0 0
Flaugherty House
 300 0 0
PA Motor Speedway Snack Bar
 300 3 0
Duquesne Club
 210 1 0
Fast Stop
 100 0 0
Glassmere Food Mart 252
 100 1 1
Lennys Place
 100 3 2
Scoreboard Lounge
 100 0 0
Willees Tavern
 100 1 0
Cemline Corp
 60 1 0
Allegheny Country Rifle Club
 50 0 0
The Fools Bar
 50 0 0
Culligan Store Sol of Alleg CO
 25 1 0
Glacier Water Serv Allegheny C
 25 1 0
Marys Chuck Wagon
 25 0 0
National Water Service
 25 2 0
Youthtowne
 25 1 1
Inactive systems (194, no longer operating or reporting)

Kept for the record and excluded from the county totals above. Browse inactive systems.

About this data

Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Pennsylvania records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.