PlainWater
Counties → Maryland

Howard County, Maryland

Water Systems
88
Population Served
309,588
Total Violations
985
374 health-based
PFAS Detected
2
of 2 tested

Violation Analysis

77.3%
Systems with Violations
11.2
Avg Violations per System
38.0%
Health-Based Violations

Water Source Types

GW
48 systems (55%)
SW
2 systems (2%)

PFAS Contamination

2
Systems Tested
2
PFAS Detected
100.0%
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

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

No violations on record (11) One or more violations (39)

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
Howard County D.p.w. Distribution 286,158 20 Detected
Glenelg High School 1,532 26 -
Bushy Park Es/Glenwood MS Complex 1,500 2 -
Highs of Cooksville 1,321 0 -
Royal Farms Store 1,015 0 -
Glenelg Country School 950 65 Detected
Highs of Fulton 758 0 -
McDonalds of Lisbon 735 14 -
St Michaels Catholic Church 697 6 -
Glenwood Library 671 0 -
Folly Quarter Middle School 667 10 -
Dayton Oaks Elementary School 595 0 -
New Hope 7th-Day Adventist Church 558 13 -
Inwood Village Center 534 76 -
Your Journey Child Care 533 4 -
Triadelphia Ridge Elementary 507 11 -
Howard County Fair Main Exhibit Hall 500 2 -
Lisbon Elementary School 492 26 -
Mount Airy Christian Academy 435 25 -
Highs of Glenelg 409 0 -
Glenwood Community Center 366 6 -
Dunkin Donuts - Woodbine 363 0 -
West Friendship Elementary School 350 2 -
Boarmans Meat Market 320 7 -
Lutheran Village at Miller's Grant 315 19 -
Bolder Grill 310 2 -
Schooley Mill Park 307 0 -
Clarksville Lds Church 300 0 -
Country Corner Snowball, Inc 259 2 -
Larriland Farms 252 10 -
West Howard Swim Club 220 7 -
Therapeutic and Recreational Riding Ctr 215 13 -
St. Marks Episcopal Church 205 1 -
Temple Isaiah Synagogue and Preschool 203 14 -
Howard County Fair (Office) 200 9 -
Howard County Fairgrounds - Poultry Bld 200 4 -
Howard County Fair Wash Racks- Well #5 200 2 -
Howard County Fair 4H Hall 200 6 -
Woodstock Inn 183 7 -
Villas at Cattail Creek 170 10 -
Lai Baptist Church 157 0 -
St. Andrews Episcopal Church - Chapel 155 10 -
Western Regional Park Pavilion Well 150 0 -
Western Regional Park 150 4 -
Circle D Farms ( Dowd House) 149 8 -
Cattail Creek Country Club 145 7 -
Carroll Motor Fuel - Lisbon 137 1 -
Calvary Lutheran Church 133 1 -
Ledos Pizza 130 1 -
Woodbine Inn and Collins Inn 121 4 -

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
Harford County
238 systems · 217,578 served · 3,670 violations
Frederick County
220 systems · 215,362 served · 3,555 violations
Charles County
171 systems · 143,656 served · 3,860 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Howard County? ▼
Howard County has 985 total drinking water violations across 88 water systems, of which 374 are health-based violations. 77.3% of systems have at least one violation.
How many people get water from Howard County systems? ▼
Water systems in Howard County serve approximately 309,588 people through 88 public water systems.
Has PFAS been detected in Howard County water? ▼
Of 2 water systems tested for PFAS in Howard County, 2 had PFAS detected (100.0% detection rate).
What types of water sources supply Howard County? ▼
Water systems in Howard County use GW (48 systems), SW (2 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. 38.0% of Howard 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.