Blair County, Pennsylvania — public water systems
At a glance
50 active public water systems are filed under Blair County, Pennsylvania in EPA's SDWIS records, together reporting 101,604 people served. The largest is Altoona Water Authority, which reports serving 62,500 people. 24 are community water systems serving people where they live; the other 26 are non-community systems, such as schools, workplaces, campgrounds and gas stations with their own supply.
Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.
Active systems
50
Population served
101.6K
Community systems
24
Groundwater share
86%
How does Blair County compare with other Pennsylvania counties?
Blair County has the 45th-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 101,604 people served in total, the 26th-largest county figure in the state and 0.8% of the statewide total. The average system here reports serving 2,032 people, about 17% above 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 Blair County's drinking water come from?
By primary water source, Blair County's active systems draw on groundwater (42, 84%), purchased surface water (5, 10%), surface water (2, 4%) and purchased groundwater (1, 2%). Overall, 86% rely mainly on groundwater (including purchased groundwater) and 14% 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, Altoona Water Authority, draws primarily on surface water.
What kinds of water systems operate in Blair County?
Blair County's active systems break down as 24 community systems (48%), 1 non-transient non-community systems (2%) and 25 transient non-community systems (50%). 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 non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. 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 private (60%), local government (28%), public/private partnership (10%) and state government (2%).
Water systems in Blair County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Altoona Water Authority | Blair | 62,500 | Community | Surface water |
| 2 | Hollidaysburg Muni Auth | Blair | 8,523 | Community | Purchased surface water |
| 3 | Tyrone Boro Water Auth | Blair | 6,500 | Community | Surface water |
| 4 | Roaring Spring Muni Water Auth | Blair | 3,182 | Community | Groundwater |
| 5 | Bellwood Boro Auth | Blair | 3,162 | Community | Purchased surface water |
| 6 | Martinsburg Muni Auth | Blair | 3,160 | Community | Groundwater |
| 7 | Blair Twp Water & Sewer Auth | Blair | 2,550 | Community | Purchased surface water |
| 8 | Greenfield Twp Muni Auth | Blair | 2,500 | Community | Groundwater |
| 9 | Duncansville Muni Water Auth | Blair | 2,350 | Community | Groundwater |
| 10 | Williamsburg Munic Auth | Blair | 1,800 | Community | Groundwater |
| 11 | Freedom Twp Water & Sewer | Blair | 1,400 | Community | Purchased surface water |
| 12 | Juniata Gap Elem Sch | Blair | 620 | Non-transient non-community | Groundwater |
| 13 | Hillcrest Communities Lp | Blair | 350 | Community | Groundwater |
| 14 | Southern Blair Senior Center | Blair | 350 | Transient non-community | Groundwater |
| 15 | Geeseytown Vol Fire Co | Blair | 304 | Transient non-community | Groundwater |
| 16 | Fredericksburg Water Assn | Blair | 300 | Community | Groundwater |
| 17 | Blair MHP | Blair | 185 | Community | Groundwater |
| 18 | Sproul Water Assn | Blair | 180 | Community | Groundwater |
| 19 | Henrietta Mutual Water Assn | Blair | 165 | Community | Groundwater |
| 20 | Vfw Post No 8724 | Blair | 100 | Transient non-community | Groundwater |
| 21 | Canoe Creek St Park | Blair | 100 | Transient non-community | Groundwater |
| 22 | Fort Roberdeau | Blair | 100 | Transient non-community | Groundwater |
| 23 | Vail Water Assn | Blair | 98 | Community | Groundwater |
| 24 | East Sharpsburg Water Assn | Blair | 95 | Community | Groundwater |
| 25 | Westwood Park Water Co | Blair | 95 | Community | Groundwater |
| 26 | Curryville Water Auth | Blair | 85 | Community | Purchased groundwater |
| 27 | Ore Hill Water Assn | Blair | 80 | Community | Groundwater |
| 28 | Camp Anderson Boy Scouts | Blair | 75 | Transient non-community | Groundwater |
| 29 | Heidelberg Cc | Blair | 60 | Transient non-community | Groundwater |
| 30 | Smith Corner Mennonite Ch | Blair | 60 | Transient non-community | Groundwater |
| 31 | Mckee Tavern | Blair | 50 | Transient non-community | Groundwater |
| 32 | Bel Air Park Apts | Blair | 44 | Community | Groundwater |
| 33 | Leightys Mkt | Blair | 40 | Transient non-community | Groundwater |
| 34 | Ridge View Personal Care Home | Blair | 35 | Community | Groundwater |
| 35 | Apple Blossom Lane MHP | Blair | 31 | Community | Groundwater |
| 36 | H2o To Go Save A Lot | Blair | 25 | Transient non-community | Purchased surface water |
| 37 | Sheetz Store 169 Mckee | Blair | 25 | Transient non-community | Groundwater |
| 38 | Sinking Valley Cc | Blair | 25 | Transient non-community | Groundwater |
| 39 | Relax Inn | Blair | 25 | Transient non-community | Groundwater |
| 40 | Getgo #3701 | Blair | 25 | Transient non-community | Groundwater |
| 41 | Conys Kitchen | Blair | 25 | Transient non-community | Groundwater |
| 42 | Williamsburg C&Ma Church | Blair | 25 | Transient non-community | Groundwater |
| 43 | Sandys Cs LLC | Blair | 25 | Transient non-community | Groundwater |
| 44 | Milky Way Drive in | Blair | 25 | Transient non-community | Groundwater |
| 45 | Scotch Valley Cc | Blair | 25 | Transient non-community | Groundwater |
| 46 | Gearharts Meats | Blair | 25 | Transient non-community | Groundwater |
| 47 | Marzoni S Greenwood | Blair | 25 | Transient non-community | Groundwater |
| 48 | Greenwood Steak House | Blair | 25 | Transient non-community | Groundwater |
| 49 | Wrights Orchard Sta Cpgrd | Blair | 25 | Transient non-community | Groundwater |
| 50 | Best Way Pizza | Blair | 25 | Transient non-community | Groundwater |
Blair County water systems: frequently asked questions
How many public water systems are in Blair County, Pennsylvania?
EPA's SDWIS records file 50 active public water systems under Blair County, Pennsylvania: 24 community systems (48%), 1 non-transient non-community systems (2%) and 25 transient non-community systems (50%).
Who supplies drinking water in Blair County, PA?
The largest community water systems filed under Blair County are Altoona Water Authority (62,500 people served), Hollidaysburg Muni Auth (8,523 people served) and Tyrone Boro Water Auth (6,500 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 Blair County's drinking water come from groundwater or surface water?
Of the 50 active public water systems in Blair County, 86% draw mainly on groundwater and 14% on surface water, counting purchased supplies. The largest system, Altoona Water Authority, uses surface water.
Where can I find a water quality report for Blair 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. 24 community systems are filed under Blair 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 Blair 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
- All Pennsylvania public water systems· 7,217 active
- Northumberland County· 62 systems
- Warren County· 61 systems
- Lawrence County· 55 systems
- McKean County· 54 systems
- Indiana County· 50 systems
- Potter County· 46 systems
- How to find out who supplies your drinking water
- How to find and read your annual water quality report
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 Blair County, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/blair (data as of October 1, 2026).