COUNTY WATER-SYSTEM LEDGER
Lancaster, Pennsylvania
EPA’s September 2026 export lists 23 active community water systems serving Lancaster, Pennsylvania, with 1 current-violation flags and 0 serious-violator flags among the covered systems.
Source: EPA SDWIS system-search export · Active community systems serving 2,500+ people · Snapshot 13 Sep 2026
01 / SYSTEMS
Water systems serving Lancaster, Pennsylvania
EPA associates 23 covered systems with Lancaster, Pennsylvania; their reported population-served values total 318,939 and may overlap.
Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.
| Water system | Population served | Primary source | Current export status |
|---|---|---|---|
| City Of LancasterPA7360058 | 120,000 | Surface water | No current violation flagged |
| Columbia Water CoPA7360123 | 25,200 | Surface water | No current violation flagged |
| Ephrata Area Joint AuthorityPA7360045 | 24,500 | Surface water | No current violation flagged |
| East Hempfield Water AuthPA7360063 | 20,988 | Surface water purchased | No current violation flagged |
| Elizabethtown Area WaterPA7360124 | 19,000 | Surface water | No current violation flagged |
| Mt Joy Boro AuthPA7360091 | 15,261 | Groundwater under influence of surface water | No current violation flagged |
| Lititz BoroPA7360126 | 9,397 | Groundwater under influence of surface water | No current violation flagged |
| Warwick Twp Lititz SysPA7360116 | 8,561 | Purchased ground water under influence of surface water source | No current violation flagged |
| New Holland BoroughPA7360099 | 8,490 | Ground water | No current violation flagged |
| Millersville UnivPA7360127 | 7,950 | Ground water | No current violation flagged |
| Upper Leacock TownshipPA7360140 | 7,734 | Surface water purchased | No current violation flagged |
| East Cocalico Township AuthPA7360113 | 6,735 | Groundwater under influence of surface water | No current violation flagged |
| Manheim Area Water & Sewer AutPA7360078 | 6,701 | Groundwater under influence of surface water | No current violation flagged |
| East Petersburg BoroughPA7360135 | 6,215 | Surface water purchased | No current violation flagged |
| West Earl Water AuthorityPA7360143 | 4,327 | Surface water purchased | No current violation flagged |
| Akron BoroughPA7360128 | 4,200 | Ground water | No current violation flagged |
| East DonegalPA7360083 | 4,048 | Ground water | No current violation flagged |
| Denver BoroPA7360017 | 3,861 | Surface water | No current violation flagged |
| Masonic HomesPA7360025 | 3,707 | Ground water | No current violation flagged |
| Quarryville BoroPA7360112 | 3,150 | Surface water purchased | Other current violation flag |
| Strasburg Muni Water AuthPA7360118 | 3,100 | Ground water | No current violation flagged |
| Northwestern Lancaster Co AuthPA7360164 | 2,968 | Surface water purchased | No current violation flagged |
| Warwick Twp Rothsville SystemPA7360120 | 2,846 | Ground water | No current violation flagged |
02 / SOURCE MIX
Primary water sources for Lancaster, Pennsylvania
EPA classifies 23 systems serving Lancaster, Pennsylvania across 5 primary-source categories; Surface water is the largest category with 5 systems.
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.