County · Maryland
Charles County, Maryland: drinking water records
This overview covers 22 ZIP codes and 50 community water systems in Charles County. It also stands in for 7 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Waldorf - Charles County DPW MD0080049 | 84,296 | 1,110 | 3 | 0 | 0 ppb |
| Town of la Plata MD0080025 | 11,535 | 270 | 0 | 0 | 0 ppb |
| Bryans Road MD0080033 | 6,260 | 240 | 0 | 0 | 0 ppb |
| Town of Indian Head MD0080020 | 4,100 | 180 | 0 | 0 | 0 ppb |
| Naval Support Facility, Indian Head MD0080058 | 3,321 | 240 | 0 | 0 | 5.7 ppb |
| Du Mar Estates Water Company MD0080010 | 150 | 0 | 0 | 1 | 0 ppb |
| Independence Village MD0080019 | 88 | 0 | 0 | 1 | 1.2 ppb |
| Bellewood Water Association MD0080006 | 75 | 0 | 0 | 1 | 0 ppb |
| White Plains 2 Mhp/Jack Blair MD0080208 | 70 | 60 | 0 | 0 | 2.7 ppb |
| Thunderbird Motel MD0080069 | 60 | 0 | 0 | 1 | 2.4 ppb |
| Garden Estates Central Water MD0080015 | 55 | 0 | 0 | 1 | 0 ppb |
| Laurel Water Supply MD0080026 | 50 | 0 | 0 | 1 | 0 ppb |
| Potomac Heights MD0080038 | 1,800 | 0 | 0 | 0 | 0 ppb |
| Swan Point MD0080046 | 945 | 0 | 0 | 0 | 0 ppb |
| Cliffton on the Potomac MD0080009 | 744 | 0 | 0 | 0 | 0 ppb |
| Hunters Brooke/Falcon Ridge Subd MD0080083 | 614 | 0 | 0 | 0 | 0 ppb |
| Charles County Gardens Water MD0080008 | 551 | 0 | 0 | 0 | 1.8 ppb |
| Benedict MD0080062 | 376 | 0 | 0 | 0 | 0 ppb |
| Kings Manor - White Plains Water Co, INC MD0080024 | 372 | 0 | 0 | 0 | 2.4 ppb |
| Idlewood Park MD0080205 | 320 | 0 | 0 | 0 | 2 ppb |
| Bel Alton MD0080005 | 311 | 0 | 0 | 0 | 0 ppb |
| Chapel Point Wds/ Jude House/ Comm Ctr MD0080064 | 280 | 0 | 0 | 0 | 0 ppb |
| Aqualand Campground MD1081005 | 240 | 0 | 0 | 0 | 1 ppb |
| Ellenwood MD0080057 | 229 | 0 | 0 | 0 | 1 ppb |
| Red Hill Water Company, INC. MD0080040 | 200 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Charles County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 20617, 20625, 20637, 20661, 20662, 20677, 20693.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.