UST Check → counties → Maryland → Harford
Underground storage tanks & leak sites in Harford County, MD
Every figure below is from EPA UST Finder — the EPA-compiled national registry of state-reported underground storage tanks — county aggregates as published by EPA.
559registered tank facilities
249open tanks
1,805closed tanks
644leak incidents on record
6cleanups still open
6 leak cleanups in
Harford County are still open — the state has not closed the case.
An open cleanup near a property you're buying or lending on is a findable, checkable fact: it appears in a
per-address screen with distance and the registry record.
Largest registered facilities
By open-tank count, from the facility-level registry. Every fact is attributed to the EPA record (linked ID); something wrong — use the correction path in the footer and we'll fix or remove it promptly.
| Facility | City | Open / closed tanks | Status | EPA record |
|---|---|---|---|---|
| Sheetz #316 | Joppa | 5 / 4 | Open UST(s) | MD9245 |
| High's Dairy Store #1 | Whiteford | 5 / 0 | Open UST(s) | MD2055 |
| Sunoco #0479-7858 | Aberdeen | 4 / 8 | Open UST(s) | MD8237 |
| Darlington Citgo | Darlington | 4 / 5 | Open UST(s) | MD11816 |
| Kiani Petroleum, Inc. | Edgewood | 4 / 4 | Open UST(s) | MD5249 |
| Wawa Food Market #567 | Aberdeen | 4 / 3 | Open UST(s) | MD3948 |
| 28352 Emmorton Exxon | Edgewood | 4 / 1 | Open UST(s) | MD3763 |
| Hanson Road Citgo Royal Lands, LLC | Edgewood | 4 / 0 | Open UST(s) | MD2056 |
What this means if you're buying or lending here
- "Closed" ≠ clean. A closed tank was taken out of service per the registry — many were closed without soil testing, especially before the late 1990s.
- The registry is incomplete by design. Tanks removed before 1986 and most residential heating-oil tanks were never registered. A county with 559 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. 6 cases in this county are still open; contamination may still be under investigation or remediation — distance from a specific parcel is what matters, and that's a per-address question.
Screen a specific property
This page covers the county. A purchase or loan decision needs the registry around one address: registered tanks at the parcel, every facility within 500 and 1,500 ft, leak cleanups with status and distance — each line cited to the official record.
Screen an address — $49 How it worksThis is a screen of EPA-registered tank and leak records, not an environmental site assessment. State registries are incomplete by design: tanks removed before 1986 and most residential heating-oil tanks were never registered, so a clean screen cannot prove the absence of a tank. "Closed" means a tank was taken out of service per the registry — it does not certify that no contamination remains.
source: EPA UST Finder EPA data vintage 2024-12-04 computed 2026-06-12