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Counties → Maryland

Charles County, Maryland

SDWIS compliance plate

Sheet MD017 · Charles County 171 sys · 3,860 viol · #438/3254

VIOL-SEVERE · HEALTH-LOW · RANK-TOP · PHOTO-FINISH · PFAS-LOW · SRC-GW · SYS-LARGE · BOOK-FULL

  • VIOL-SEVERE 92.4% flagged
  • HEALTH-LOW 14.6% health
  • RANK-TOP #438/3254
  • PHOTO-FINISH ±0.3 pp
  • PFAS-LOW 16.7% detect
  • SRC-GW GW lead 99%
  • SYS-LARGE 171 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Prince George's County ( -0.3 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Charles County ranks #438 of 3,254 counties by people served, and #7 of 24 counties in Maryland. See methodology · corpus placement.

Charles County standing, lower-flagged corpus third

Flagged-system rate 92.4% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 14.6% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 16.7% is UCMR5 detect rate in the tested-pool middle third (≤ 33.3%) . Population served ranks #438 of 3,254 · #7 of 24 in Maryland.

Flagged-rate neighbourhood around Charles County

Lowest/highest poles plus in-state counties nearest Charles County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.

0% 20% 40% 60% 80% 100% Baltimore city · lowest Charles · this county Wicomico · near 38.5% 92.1% 92.4% 93.9% 95.9% 96.6%

Source: EPA SDWIS (county aggregates) As of 2026-05-15

Water Systems

System Name Population Violations PFAS
Waldorf - Charles County Dpw 84,296 19 Detected
Town of la Plata 11,535 33 Clean
Bryans Road 6,260 11 Clean
Town of Indian Head 4,100 22 Clean
Naval Support Facility, Indian Head 3,321 58 Clean
Potomac Heights 1,800 93 -
College of Southern MD - Main Campus 1,220 56 -
Henry E. Lackey High School 1,187 2 -
Maurice J. McDonough High School 1,050 1 -
Stethem Ed Cntr & James Craik Elementary 1,028 1 -
Welcome Center (Newburg) 1,004 10 -
Swan Point 945 11 -
Beantown Texaco Food -Dash IN 900 13 -
St. Marys Bryantown Catholic School 791 20 -
Cliffton on the Potomac 744 22 -
Piccowaxen Middle School 722 1 -
Hunters Brooke/Falcon Ridge Subd 614 7 -
T.c. Martin Elementary School 609 0 -
Charles County Gardens Water 551 17 -
Dash in Food Store 550 22 -
New Life Wesleyan Church- la Plata 520 6 -
Bryantown Mall 512 64 -
Gale-Bailey Elementary 497 1 -
Naval Support Facility, Stump Neck Annex 495 5 -
St. Peters School 493 4 -
Dr. Thomas Higdon Elementary 488 5 -
Malcolm Elementary School 446 2 -
Southern Maryland Christian Academy 445 32 -
Grace Christian Academy 410 38 -
Coll. of So. MD Trades & Energy Training 402 9 -
Mt. Hope/ Nanjemoy Elementary School 385 1 -
Benedict 376 4 -
Kings Manor - White Plains Water Co, Inc 372 11 -
St Ignatius Church and St Thomas Manor 353 7 -
Pomunk Water Company Distribution System 340 1 -
Idlewood Park 320 15 -
Bel Alton 311 12 -
Dash in Glymont 300 11 -
Robert Stethem Memorial Park 300 0 -
Dollar General - Cobb Island 294 2 -
Church of Latter Day Saints 285 8 -
Chapel Point Wds/ Jude House/ Comm Ctr 280 35 -
Melwood Recreation Center/ Camp 250 31 -
Aqualand Campground 240 3 -
Ellenwood 229 12 -
Hotel Charles 218 20 -
Good Samaritan Presbyterian 202 2 -
Red Hill Water Company, Inc. 200 32 -
Camp St Charles- Kitchen (Well #1) 200 15 -
Captain Johns Crabhouse 200 16 -

Compare beyond Maryland

Lower-flagged peers for Charles County

Cross-state counties nearest Charles County on flagged-system share (92.4%) and cumulative violation count (3,860). In-state neighbours stay on the compliance plate above.

Similar flagged-system rate

Nearest cross-state counties by % of SDWIS systems with at least one violation on record.

4 peers

Similar violation load

Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).

4 peers

Read our methodology · Check your water system - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.