Public water system · MD1120066
ActiveHarford County Airport
At a glance
Harford County Airport (PWSID MD1120066) is an active non-transient non-community water system in Harford County, Maryland. It reports serving 50 people through 2 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 10 violations for this system; 1 is health-based, and the most recent began in April 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
50
Service connections
2
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Harford County Airport compare with other water systems in Harford County?
By EPA's size categories, Harford County Airport is a very small system (500 people or fewer). Harford County has 226 active public water systems. Its population served is well below the county average of 956 people per system, and accounts for less than 0.1% of the 215,993 people reported by systems filed under the county. Across Maryland, the 2,992 active systems average 1,947 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Harford County Airport is well below that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Maryland has 491 active non-transient non-community water systems, 16% of the state's 2,992 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 2,870 Maryland systems (96%) list groundwater as their primary source.
Who owns and regulates Harford County Airport?
EPA lists Harford County Airport as privately owned. The MD state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 176 of the 226 active systems in Harford County (78%) are also privately owned.
Does Harford County Airport have drinking water violations?
EPA's records list 10 violations for this system; 1 is health-based, and the most recent began in April 2025. The violations listed here began between January 2021 and April 2025. By type: 5 monitoring and reporting, 3 monitoring, 1 reporting and 1 required treatment not met. The contaminant or rule involved most often is Revised Total Coliform Rule (3 of them). EPA lists 8 as resolved and 2 as archived. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Archived |
| 2025-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Archived |
| 2024-10-17 | ReportingLSL Reporting · code 4G | Lead and Copper Rule Revisionscode 5200 | No | Resolved |
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Resolved |
| 2022-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2021-07-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2021-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2021-04-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2021-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
All 10 violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Harford County Airport: frequently asked questions
Who runs Harford County Airport?
Harford County Airport (PWSID MD1120066) is a non-transient non-community water system privately owned. It is regulated by the MD state drinking water program.
How many people does Harford County Airport serve?
Harford County Airport reports serving 50 people through 2 service connections in Harford County, Maryland.
Where does Harford County Airport get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Harford County Airport have any drinking water violations?
EPA's records list 10 violations for this system; 1 is health-based, and the most recent began in April 2025. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Harford County Airport's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's records list 10 violations for this system; 1 is health-based, and the most recent began in April 2025. For current results, consult EPA ECHO, or the MD state drinking water program.
Where can I find Harford County Airport's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Harford County Airport is a non-transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Harford County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Harford County D.P.W. | Harford | 104,567 | Community | Surface water |
| City of Aberdeen | Harford | 18,006 | Community | Purchased surface water |
| Chapel Hill - Aberdeen Proving Grounds | Harford | 15,000 | Community | Groundwater |
| City of Havre De Grace | Harford | 14,000 | Community | Surface water |
| Maryland American Water Company | Harford | 13,200 | Community | Surface water |
| Harford Community College - Main Campus | Harford | 2,500 | Non-transient non-community | Groundwater |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Harford County Airport, PWSID MD1120066, Maryland”, https://aquacensus.com/water-systems/maryland/harford-county-airport-md1120066 (data as of October 1, 2026).