Allegheny County, Pennsylvania — public water systems

65 active public water systems serve Allegheny County, reporting 2M people served.

Dataset updated July 2026 . Source: EPA SDWIS/ECHO, refreshed quarterly.

Active systems

Population served

Community systems

Groundwater share

27.7%

Water systems in Allegheny County

Active public water systems in Allegheny County, Pennsylvania
#	Water system	County	Population served	Type	Source
1	Pa Amer Water Co-Pittsburgh	Allegheny	686,000	Community	Surface water
2	Pittsburgh Water & Sewer Auth	Allegheny	520,000	Community	Surface water
3	West View Water Authority	Allegheny	200,000	Community	Surface water
4	Wilkinsburg-Penn Jt Water Auth	Allegheny	125,000	Community	Surface water
5	Hampton Shaler Water Authority	Allegheny	61,949	Community	Purchased surface water
6	Monroeville Municipal Auth	Allegheny	48,500	Community	Purchased surface water
7	Oakmont Water Authority	Allegheny	39,901	Community	Surface water
8	Moon Twp Muni Auth	Allegheny	38,000	Community	Surface water
9	West Cnty Muni Auth-Mckeesport	Allegheny	32,644	Community	Surface water
10	Plum Boro Muni Auth	Allegheny	27,500	Community	Purchased surface water
11	Pittsburgh Intl Airport	Allegheny	26,915	Non-transient non-community	Purchased surface water
12	Western Allegheny County Mun A	Allegheny	19,031	Community	Purchased surface water
13	Fox Chapel Auth	Allegheny	18,500	Community	Purchased surface water
14	Robinson Twp Muni Auth	Allegheny	16,354	Community	Surface water
15	Harrison Twp Water Auth	Allegheny	13,411	Community	Surface water
16	Findlay Twp Municipal Auth	Allegheny	11,460	Community	Purchased surface water
17	Richland Twp Water Authority	Allegheny	10,190	Community	Purchased surface water
18	Upmc Presbyterian	Allegheny	8,200	Non-transient non-community	Purchased surface water
19	Edgeworth Boro Muni Auth	Allegheny	7,781	Community	Purchased surface water
20	Sewickley Boro Water Auth	Allegheny	6,800	Community	Groundwater
21	Neville Twp Water Dept	Allegheny	6,750	Community	Purchased surface water
22	Va Pittsburgh Ud	Allegheny	6,701	Non-transient non-community	Purchased surface water
23	Coraopolis Water & Sewer Auth	Allegheny	5,804	Community	Purchased surface water
24	Duquesne Water Dept	Allegheny	5,565	Community	Purchased surface water
25	Tarentum Boro Water Dept	Allegheny	4,927	Community	Surface water
26	Upmc Magee Womens Hospital	Allegheny	4,900	Non-transient non-community	Purchased surface water
27	Upmc Shadyside Hillman Campus	Allegheny	4,750	Non-transient non-community	Purchased surface water
28	Fawn Frazer Jt Water Auth	Allegheny	4,650	Community	Purchased surface water
29	Upmc Montefiore	Allegheny	4,500	Non-transient non-community	Purchased surface water
30	Brackenridge Boro Water Dept	Allegheny	3,700	Community	Surface water
31	Springdale Boro Water Dept	Allegheny	3,405	Community	Groundwater
32	Reserve Twp Water Dept	Allegheny	3,204	Community	Purchased surface water
33	Harmar Twp Muni Auth	Allegheny	3,200	Community	Groundwater
34	Aspinwall Boro Water Dept	Allegheny	3,151	Community	Purchased surface water
35	Va Healthcare System Heinz	Allegheny	3,112	Community	Purchased surface water
36	Childens Hospital Upmc	Allegheny	3,000	Non-transient non-community	Purchased surface water
37	Upmc Western Psychiatric Inst	Allegheny	2,645	Non-transient non-community	Purchased surface water
38	Allegheny General Hospital	Allegheny	2,595	Non-transient non-community	Purchased surface water
39	Jefferson Hospital	Allegheny	2,470	Non-transient non-community	Purchased surface water
40	Aleppo Twp Auth	Allegheny	2,200	Community	Purchased surface water
41	Blawnox Boro Water Dept	Allegheny	2,200	Community	Purchased surface water
42	East Deer Twp Water Dept	Allegheny	2,000	Community	Purchased surface water
43	Cheswick Boro Water Dept	Allegheny	1,861	Community	Purchased groundwater
44	Braddock Boro Water Auth	Allegheny	1,708	Community	Purchased surface water
45	Township of Springdale	Allegheny	1,600	Community	Purchased groundwater
46	Oakdale Boro Water Dept	Allegheny	1,459	Community	Purchased surface water
47	Ahn Wexford Hospital	Allegheny	1,072	Non-transient non-community	Purchased surface water
48	Allegheny Valley Hospital	Allegheny	908	Non-transient non-community	Purchased surface water
49	Davids Diner	Allegheny	900	Transient non-community	Groundwater
50	Heritage Valley Sewickley	Allegheny	750	Non-transient non-community	Purchased surface water