Delaware UST Directory
2,928 facilities · 7 LUST releases
Delaware manages a substantial infrastructure of underground storage tanks (USTs), with 2,928 registered UST facilities across the state. These facilities include 1,180 active USTs, in addition to 8,204 closed tanks. The historical operation of these tanks has resulted in environmental impacts, as evidenced by 4,979 documented leaking underground storage tank (LUST) release sites. Of these, 111 releases are currently classified as "Open," signifying ongoing cleanup and remediation efforts. Data concerning USTs in Delaware is sourced from the EPA UST Finder program.
The presence of USTs necessitates vigilant monitoring and maintenance to prevent environmental contamination. Leaks from these tanks can introduce petroleum products and other hazardous substances into the surrounding soil and, critically, into groundwater resources. Therefore, comprehensive environmental due diligence is paramount for property owners and regulators alike. Proactive measures and timely remediation are essential to safeguard public health and ensure the long-term protection of Delaware's vital groundwater supplies from potential UST-related pollution.
Cities
Top Facilities
Diamond Gas
, DE
JP Morgan Chase Core Data Center #2
, DE
JP Morgan Chase Core Data Center #1
, DE
Southern States Milford
, DE
Tru Blu Station Triangle Seaford
, DE
Bridgeville BP #2445
, DE
Getty #8667
, DE
Lewes BP #2457
, DE
Long Neck Dash In Millsboro
, DE
Ellendale Exxon
, DE
Millsboro BP #2461
, DE
Shore Stop #295
, DE
Bodies Dairy Market #3
, DE
Lewes Exxon
, DE
Pep Up #18 Millsboro
, DE
Wallys Shell
, DE
Hockessin Shell
, DE
Selbyville BP #2464
, DE
Route 24 BP #1296
, DE
Shore Stop #279 Greenwood
, DE
Recent Releases
STEELTECH
Delmar, DE
REPUBLICAN HEADQUARTERS
Georgetown, DE
A.P. CROLL AND SON
Georgetown, DE
TOWNE POINT ELEMENTARY
Dover, DE
FLEET REFINISHING
Milford, DE
EXXON - ALERT GAS STATION
Stanton, DE
Brenda Swierk Residence
Bear, DE
KIRKWOOD ARMY RESERVE CENTER
Wilmington, DE
3877 Evelyn Drive
Wilmington, DE
Highland Mennonite Church
Bear, DE
Perez & Cintora Residence
Wilmington, DE
NAVY-MARINE RESERVES
Wilmington, DE
DelDot Property Pearsons Corner
Dover, DE
Pearsons Supermarket
Dover, DE
LEGAR'S STORE
Dover, DE
Nik's Corner Store
Dover, DE
KADY RESIDENCE
Wilmington, DE
CROWLEY RESIDENCE
Wilmington, DE
George McGaughey Residence
Camden-Wyoming, DE
E.S. ADKINS
Seaford, DE
Related Guides
Delaware UST Regulations 2026
State-specific compliance guide for Delaware underground storage tank regulations
Delaware SpecificProperty Due Diligence
How to check for underground storage tanks before buying property
Leaking Tank Risks
Health and environmental impacts of LUST releases
Cleanup Costs
What to expect for UST remediation costs
Phase I ESA Guide
Environmental site assessments for properties with USTs
Frequently Asked Questions
How many underground storage tank (UST) facilities are currently in Delaware?
Delaware has 2,928 UST facilities. This number reflects the total count of locations with underground storage tanks within the state.
How many leaking underground storage tank (LUST) release sites have been identified in Delaware?
There have been 4,979 LUST release sites identified in Delaware. These sites indicate locations where releases from underground storage tanks have occurred.
How many active UST release cleanups are currently underway in Delaware?
Currently, there are 111 open releases requiring cleanup in Delaware. These are active sites where remediation efforts for UST releases are ongoing.