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

COUNTY WATER-SYSTEM LEDGER

Harford, Maryland

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

Systems5active CWS · pop. 2,500+
Population served164,773reported total; may overlap
Current violation flag0.0%0 systems
Serious-violator flag0.0%0 systems

01 / SYSTEMS

Water systems serving Harford

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

Water systemPopulation servedPrimary sourceCurrent export status
Harford County D.P.W.MD0120016104,567Surface waterNo current violation flagged
City Of AberdeenMD012000118,006Surface water purchasedNo current violation flagged
Chapel Hill - Aberdeen Proving GroundsMD012000215,000Ground waterNo current violation flagged
City Of Havre De GraceMD012001214,000Surface waterNo current violation flagged
Maryland American Water CompanyMD012000313,200Surface waterNo current violation flagged

02 / SOURCE MIX

Surface water3 systems · 131,767 served
Surface water purchased1 systems · 18,006 served
Ground water1 systems · 15,000 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.