PlainWater
Counties → Maryland

Baltimore County, Maryland

Water Systems
276
Population Served
46,635
Total Violations
3,504
1,069 health-based
PFAS Detected
1
of 2 tested

Violation Analysis

60.1%
Systems with Violations
12.7
Avg Violations per System
30.5%
Health-Based Violations

Water Source Types

GW
44 systems (16%)
SW
6 systems (2%)

PFAS Contamination

2
Systems Tested
1
PFAS Detected
50.0%
Detection Rate

PFAS (per- and polyfluoroalkyl substances) are persistent chemicals found in drinking water. The EPA has set enforceable limits for several PFAS compounds under UCMR5 monitoring.

Compliance Snapshot

Baltimore Maryland water systems by violation status, EPA SDWIS records.

No violations on record (15) One or more violations (35)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

Water Systems

System Name Population Violations PFAS
Manor Shopping Center 2,921 137 Detected
Stevenson University 1,313 68 -
Hereford High School 1,300 20 -
Fork Christian Church 1,245 0 -
Hereford Middle School 1,050 18 -
Royal Farms #185 1,031 0 -
Oregon Ridge Park Lodge 1,003 3 -
Gunpowder Falls St Pk Sparks Nature Ctr 1,001 0 -
Gunpowder Falls St Pk Monkton Station 1,001 0 -
Gunpowder Falls State Park Paper Mill 1,001 0 -
Bais Yaakov School for Girls 940 102 -
Stella Maris 873 0 -
Kaiser Permanente South Baltimore 800 0 -
Jacksonville Elementary 618 6 -
Sparks Elementary School 537 2 -
Hereford Plaza (Michaels Pizza, 7-11) 520 2 -
Gunpowder Falls St Pk Camp Cone 501 0 -
Gunpowder Falls St Pk Camp Wood 501 0 -
Gunpowder Falls Freeland Ncr Trail 501 7 -
Pealstone Center-Pool Area 500 1 -
Glen Meadows Retirement Community 468 152 -
Prettyboy Elementary School 460 8 -
Seventh District Elementary 437 17 -
Valley Inn 425 0 -
Camp Puhtok for Boys and Girls 420 0 -
Sunnybrook 416 24 -
Elkridge Estates of Roland Park 414 0 -
Woodberry Crossing 408 0 -
Sportsmans Hall Roller Rink 407 3 -
Hunt Valley Presbyterian Church 400 4 -
Kingsville Elementary School 391 18 -
Maryvale Preparatory School 380 40 -
Carroll Manor Elementary School 370 11 -
St. James Academy 355 57 -
St. Stephen School 350 205 -
Redeemer Classical Christian School 346 57 -
Autumn Lake Healthcare Ruxton 345 0 -
Camp Fretterd Military Reservation 325 16 -
Liberty Christian School 320 20 -
Hillendale Country Club 315 112 -
Meadowcroft Exxon 310 5 -
The Fill'er Up/ Maryland Line Service CT 308 1 -
Dunkin Donut 308 0 -
Gunpowder Falls St Pk Hart-Miller Island 305 2 -
Fifth District Elementary 301 9 -
Paper Mill Village Shopping Center 300 74 -
Glen Arm Maintenance Fclty/Ulla Popken 275 30 -
The Peppered Pig, LLC 260 1 -
Oregon Ridge Park Nature Center 260 7 -
Odyssey School 250 19 -

Other Counties in Maryland

Montgomery County
56 systems · 1,971,831 served · 1,796 violations
Baltimore city County
13 systems · 1,608,056 served · 122 violations
Anne Arundel County
425 systems · 567,204 served · 5,956 violations
Howard County
88 systems · 309,588 served · 985 violations
Harford County
238 systems · 217,578 served · 3,670 violations
Frederick County
220 systems · 215,362 served · 3,555 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Baltimore County? ▼
Baltimore County has 3,504 total drinking water violations across 276 water systems, of which 1,069 are health-based violations. 60.1% of systems have at least one violation.
How many people get water from Baltimore County systems? ▼
Water systems in Baltimore County serve approximately 46,635 people through 276 public water systems.
Has PFAS been detected in Baltimore County water? ▼
Of 2 water systems tested for PFAS in Baltimore County, 1 had PFAS detected (50.0% detection rate).
What types of water sources supply Baltimore County? ▼
Water systems in Baltimore County use GW (44 systems), SW (6 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 30.5% of Baltimore County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

Read our methodology - 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 Editorial

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.