EPA EXPORT · 13 SEP 2026FEDERAL COMPLIANCE RECORDS · NOT A HOME WATER TEST
TAP WATERLEDGERPublic system compliance records

COUNTY WATER-SYSTEM LEDGER

Blair, Pennsylvania

Compare active community water systems serving this county in EPA's public export. Systems can serve multiple places, so population totals may overlap.

Systems8active CWS · pop. 2,500+
Population served92,077reported total; may overlap
Current violation flag12.5%1 systems
Serious-violator flag12.5%1 systems

01 / SYSTEMS

Water systems serving Blair

Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.

Water systemPopulation servedPrimary sourceCurrent export status
Altoona Water AuthorityPA407002362,500Surface waterCurrent serious-violator flag
Hollidaysburg Muni AuthPA40700178,523Surface water purchasedNo current violation flagged
Tyrone Boro Water AuthPA40700216,500Surface waterNo current violation flagged
Roaring Spring Muni Water AuthPA40700193,182Ground waterNo current violation flagged
Bellwood Boro AuthPA40700093,162Surface water purchasedNo current violation flagged
Martinsburg Muni AuthPA40700303,160Ground waterNo current violation flagged
Blair Twp Water & Sewer AuthPA40700112,550Surface water purchasedNo current violation flagged
Greenfield Twp Muni AuthPA40700582,500Ground waterNo current violation flagged

02 / SOURCE MIX

Surface water2 systems · 69,000 served
Surface water purchased3 systems · 14,235 served
Ground water3 systems · 8,842 served
How to read the population total

It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.