Armstrong County, Pennsylvania — public water systems

At a glance

42 active public water systems are filed under Armstrong County, Pennsylvania in EPA's SDWIS records, together reporting 47,431 people served. The largest is Kittanning Suburb Jt Water Aut, which reports serving 8,000 people. 22 are community water systems serving people where they live; the other 20 are non-community systems, such as schools, workplaces, campgrounds and gas stations with their own supply.

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

Active systems

Population served

47.4K

Community systems

Groundwater share

76.2%

How does Armstrong County compare with other Pennsylvania counties?

Armstrong County has the 50th-most active public water systems among the 99 counties listed for active Pennsylvania systems in EPA records; among the 71 with 3 or more systems, the median has 76. Its systems report 47,431 people served in total, the 41st-largest county figure in the state and 0.4% of the statewide total. The average system here reports serving 1,129 people, about 35% below the Pennsylvania average of 1,741. Population figures are what each system reports; people served by more than one system, such as a wholesaler and the town that buys from it, are counted by each.

Where does Armstrong County's drinking water come from?

By primary water source, Armstrong County's active systems draw on groundwater (30, 71%), purchased surface water (6, 14%), surface water (4, 9.5%) and purchased groundwater (2, 4.8%). Overall, 76% rely mainly on groundwater (including purchased groundwater) and 24% on surface water, compared with 93% and 6.8% across Pennsylvania. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Kittanning Suburb Jt Water Aut, draws primarily on surface water.

What kinds of water systems operate in Armstrong County?

Armstrong County's active systems break down as 22 community systems (52%) and 20 transient non-community systems (48%). A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. EPA lists their owner types as local government (48%), private (45%), public/private partnership (4.8%) and federal government (2.4%).

Water systems in Armstrong County

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Active public water systems in Armstrong County, Pennsylvania
#	Water system	County	Population served	Type	Source
1	Kittanning Suburb Jt Water Aut	Armstrong	8,000	Community	Surface water
2	Manor Twp Jt Muni Auth	Armstrong	6,744	Community	Groundwater
3	Buffalo Twp Mun Auth Freeport	Armstrong	5,849	Community	Surface water
4	Pa American Water Kittanning	Armstrong	4,499	Community	Surface water
5	Ford City Muni Water Works	Armstrong	2,991	Community	Groundwater
6	Parks Twp Muni Auth	Armstrong	2,049	Community	Purchased surface water
7	West Kittanning Muni Auth	Armstrong	2,000	Community	Purchased surface water
8	E Armstrong Cnty Muni Auth	Armstrong	1,875	Community	Groundwater
9	Gilpin Twp Muni Auth	Armstrong	1,680	Community	Purchased surface water
10	Worthington West Franklin Jma	Armstrong	1,500	Community	Purchased surface water
11	South Buffalo Twp Muni Auth	Armstrong	1,230	Community	Purchased surface water
12	Cowanshan Yatesboro Numine Sys	Armstrong	1,200	Community	Groundwater
13	Rural Valley Water Works	Armstrong	1,000	Community	Groundwater
14	Mahoning Twp Muni Auth	Armstrong	900	Community	Purchased surface water
15	Parker Area Water Auth	Armstrong	900	Community	Surface water
16	Kittanning Plumcreek Watr Auth	Armstrong	600	Community	Purchased groundwater
17	Dayton Muni Water Dept	Armstrong	600	Community	Groundwater
18	Rayburn Twp Joint Muni Auth	Armstrong	460	Community	Purchased groundwater
19	Templeton Water Co	Armstrong	451	Community	Groundwater
20	Sugar Creek Resthome	Armstrong	323	Community	Groundwater
21	Cowanshannock M A Sagamore Sys	Armstrong	300	Community	Groundwater
22	Bear Ridge Campground	Armstrong	200	Transient non-community	Groundwater
23	Shannock Valley Vfw	Armstrong	200	Transient non-community	Groundwater
24	Skymeadow Program Ctr	Armstrong	200	Transient non-community	Groundwater
25	Wheel in Campground	Armstrong	200	Transient non-community	Groundwater
26	Silver Canoe Campground	Armstrong	150	Transient non-community	Groundwater
27	Widnoon Corner Store	Armstrong	150	Transient non-community	Groundwater
28	381 Barn	Armstrong	100	Transient non-community	Groundwater
29	Novotnys Country Baked Pizza	Armstrong	100	Transient non-community	Groundwater
30	Purples Saloon	Armstrong	100	Transient non-community	Groundwater
31	Dob-Bros Country Kitchen	Armstrong	100	Transient non-community	Groundwater
32	Widnoon Soft Serve	Armstrong	100	Transient non-community	Groundwater
33	Foxs Pizza	Armstrong	100	Transient non-community	Groundwater
34	Putneyville Store	Armstrong	100	Transient non-community	Groundwater
35	Birdsfoot Golf Course	Armstrong	100	Transient non-community	Groundwater
36	Cowanshannock Ma-Margaret Sys	Armstrong	95	Community	Groundwater
37	Black Bull Saloon	Armstrong	85	Transient non-community	Groundwater
38	Mahoning Creek Lake	Armstrong	75	Transient non-community	Groundwater
39	Milton Loop Campground	Armstrong	50	Transient non-community	Groundwater
40	Burrell Twp Vol Fire Dept	Armstrong	25	Transient non-community	Groundwater
41	Coal Coffee	Armstrong	25	Transient non-community	Groundwater
42	Snax Food N Gas Dayton	Armstrong	25	Transient non-community	Groundwater

Armstrong County water systems: frequently asked questions

How many public water systems are in Armstrong County, Pennsylvania?

EPA's SDWIS records file 42 active public water systems under Armstrong County, Pennsylvania: 22 community systems (52%) and 20 transient non-community systems (48%).

Who supplies drinking water in Armstrong County, PA?

The largest community water systems filed under Armstrong County are Kittanning Suburb Jt Water Aut (8,000 people served), Manor Twp Jt Muni Auth (6,744 people served) and Buffalo Twp Mun Auth Freeport (5,849 people served). Which system serves a particular address depends on its service area, which EPA's SDWIS records do not include; a water bill or the local utility can confirm it.

Does Armstrong County's drinking water come from groundwater or surface water?

Of the 42 active public water systems in Armstrong County, 76% draw mainly on groundwater and 24% on surface water, counting purchased supplies. The largest system, Kittanning Suburb Jt Water Aut, uses surface water.

Where can I find a water quality report for Armstrong County?

Each community water system must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1, covering the previous calendar year. 22 community systems are filed under Armstrong County, so the report to look for is the one from the system that supplies your address.

How can I check violations for a water system in Armstrong County?

Open the system's profile from the list on this page. Each profile shows the most recent Safe Drinking Water Act violations in EPA's records, with plain-English labels and whether each one is resolved. For current compliance status, EPA ECHO is the primary source.

More Pennsylvania water systems

About this data

Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.

Cite as: AquaCensus, “Public water systems in Armstrong County, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/armstrong (data as of October 1, 2026).