Public water system · MD1121203
ActiveRocks State Park - Hills Picinic Grove
At a glance
Rocks State Park - Hills Picinic Grove (PWSID MD1121203) is an active transient non-community water system in Harford County, Maryland. It reports serving 162 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a state government. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
162
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Rocks State Park - Hills Picinic Grove compare with other water systems in Harford County?
By EPA's size categories, Rocks State Park - Hills Picinic Grove 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 transient non-community water system reports serving 144 people, so Rocks State Park - Hills Picinic Grove is about 13% above that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Maryland has 2,079 active transient non-community water systems, 69% 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 Rocks State Park - Hills Picinic Grove?
EPA lists Rocks State Park - Hills Picinic Grove as owned by a state government. 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. 5 of the 226 active systems in Harford County (2.2%) are also owned by a state government.
Does Rocks State Park - Hills Picinic Grove have drinking water violations?
No SDWA violations on record.
EPA's SDWA violation and enforcement data (via EPA ECHO, updated quarterly) lists no violations for Rocks State Park - Hills Picinic Grove. For the latest compliance status, check EPA ECHO for current compliance history.
Rocks State Park - Hills Picinic Grove: frequently asked questions
Who runs Rocks State Park - Hills Picinic Grove?
Rocks State Park - Hills Picinic Grove (PWSID MD1121203) is a transient non-community water system owned by a state government. It is regulated by the MD state drinking water program.
How many people does Rocks State Park - Hills Picinic Grove serve?
Rocks State Park - Hills Picinic Grove reports serving 162 people through 1 service connection in Harford County, Maryland.
Where does Rocks State Park - Hills Picinic Grove 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 Rocks State Park - Hills Picinic Grove have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Rocks State Park - Hills Picinic Grove'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 Safe Drinking Water Act records list no violations for this system. For current results, consult EPA ECHO, or the MD state drinking water program.
Where can I find Rocks State Park - Hills Picinic Grove's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Rocks State Park - Hills Picinic Grove is a 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, “Rocks State Park - Hills Picinic Grove, PWSID MD1121203, Maryland”, https://aquacensus.com/water-systems/maryland/rocks-state-park-hills-picinic-grove-md1121203 (data as of October 1, 2026).