PlainWater
Counties → Maryland

Harford County, Maryland

Water Systems
238
Population Served
217,578
Total Violations
3,670
1,123 health-based
PFAS Detected
2
of 5 tested

Violation Analysis

88.2%
Systems with Violations
15.4
Avg Violations per System
30.6%
Health-Based Violations

Water Source Types

GW
45 systems (19%)
SW
5 systems (2%)

PFAS Contamination

5
Systems Tested
2
PFAS Detected
40.0%
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

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

No violations on record (5) One or more violations (45)

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
Harford County D.p.w. 104,567 27 Clean
City of Aberdeen 18,006 5 Detected
Chapel Hill - Aberdeen Proving Grounds 15,000 14 Clean
City of Havre de Grace 14,000 126 Clean
Maryland American Water Company 13,200 12 Detected
Harford Community College - Main Campus 2,500 237 -
Greenridge Subdivision 2,271 10 -
Mountain Christian Church 2,120 31 -
Wawa Foods #559 1,823 1 -
North Harford High School 1,346 15 -
Schucks Corner Sheetz 1,233 0 -
McDonalds 1,230 6 -
Harford Technical High School 1,187 30 -
Youths Benefit Elementary School 1,175 27 -
Fallston High School 1,113 16 -
North Harford Middle School 1,084 30 -
Fallston Middle School 1,041 13 -
Seven-Eleven #22281 908 13 -
Royal Farm Store #1 812 0 -
Savory Deli and Market 714 2 -
Harford Community College 713 55 -
Prospect Mill Elementary 691 130 -
Forest Hill Elementary School 637 31 -
Fallston Library 610 8 -
Highs #1 - Whiteford 605 1 -
North Bend Elementary School 534 18 -
St. Marks Church - Multipurpose 503 4 -
Swan Harbour Dell Mobile Home Park 500 105 -
Harford Christian School 500 61 -
North Harford Elementary 464 33 -
Jarrettsville Elementary 445 29 -
Churchville Elementary School 441 26 -
Ez Quick Food Marketand Dunkin Donuts 406 9 -
Dollar General- Street #14890 403 0 -
Valley Brook Swim Club 400 3 -
Royal Farm Store #95 400 4 -
Edgeley Grove Park - Annies Play Ground 400 9 -
Jarrettsville Plaza Shopping Center 383 2 -
Dunkin Donuts/Goodwill 354 6 -
Village Square Shopping Center 315 4 -
Arctic Circle Drive-IN 310 2 -
Dublin Elementary School 308 25 -
Walgreens #19144 304 7 -
Broadcreek Camp Saffran 302 12 -
Forest Hill Recreation Center Well 1 300 0 -
Grace Assembly of God 300 6 -
Hickory Recreation Center 300 0 -
Forest Hill Recreation Center Well 2 300 6 -
Harford Academy 292 20 -
Churchville Rec Center Main Bldg 280 2 -

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
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 Harford County? ▼
Harford County has 3,670 total drinking water violations across 238 water systems, of which 1,123 are health-based violations. 88.2% of systems have at least one violation.
How many people get water from Harford County systems? ▼
Water systems in Harford County serve approximately 217,578 people through 238 public water systems.
Has PFAS been detected in Harford County water? ▼
Of 5 water systems tested for PFAS in Harford County, 2 had PFAS detected (40.0% detection rate).
What types of water sources supply Harford County? ▼
Water systems in Harford County use GW (45 systems), SW (5 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. 30.6% of Harford 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.