Protecting Public Health and the Environment.

Storage Tanks in Idaho

Storage tanks are used to store petroleum or certain other hazardous liquids. Idaho has about 3,500 regulated underground storage tanks (USTs); there are approximately 595,000 nationwide. Leaking USTs can pose a serious environmental threat if the stored petroleum or other hazardous substance seeps into the soil and contaminates ground water, which is the source of most of Idaho's drinking water. 

Underground Storage Tanks in Idaho

DEQ is the state agency delegated responsibility by EPA to operate the UST program in Idaho. Learn about the requirements of state rules regulating USTs and how to find out if your property contains an UST here.

Leaking Underground Storage Tanks in Idaho

A leaking underground storage tank (LUST) is any UST that is leaking.  The law requires owners and operators of USTs to prevent, detect, and clean up releases and prohibits installation of unprotected steel tanks and piping. Learn more.

UST-LUST Database

If you own or plan to buy or sell property that you suspect may contain an underground storage tank (UST), it is important to find out. DEQ maintains a database of active and closed UST sites across the state and may have information on the property you are interested in buying or selling. Learn more.

Home Heating Oil Tanks in Idaho

Thousands of homes in Idaho are heated with heating oil stored in underground tanks on the owner’s property and thousands more have old heating oil tanks that are no longer used buried on the property. Many of these unused tanks still contain heating oil.  While heating oil tanks are not federally regulated under UST regulations, a leaking tank can harm the environment and may be subject to state cleanup requirements. Learn more.

Aboveground Storage Tanks

Aboveground storage tanks (ASTs) are used to store petroleum products, hazardous waste, or other hazardous materials aboveground. Petroleum ASTs in Idaho are regulated by EPA, under the federal Spill Prevention, Control, and Countermeasure (SPCC) rule. Although DEQ does not regulate ASTs in Idaho, state rules require that the agency be notified within 24 hours if a petroleum release occurs from an AST to the environment. Hazardous waste ASTs and ASTs utilized for used oil are regulated by DEQ's Hazardous Waste Program. ASTs containing materials that are hazardous but not consider waste are regulated by other agencies. Releases of hazardous materials must be immediately reported to DEQ. Local fire districts, cities, and counties may have additional AST ordinances or best management practices.

Staff Contacts

UST/LUST Program Manager
Kristi Lowder
DEQ State Office
Waste Management & Remediation Division
1410 N. Hilton
Boise, ID 83706
(208) 373-0347

LUST Specialist
Keith Dyarmett
DEQ State Office
Waste Management & Remediation Division
1410 N. Hilton
Boise, ID 83706
(208) 373-0442

More Information

Underground Storage Tanks

Idaho Underground Storage Tank Act

Rules Regulating Underground Storage Tank Systems (IDAPA 58.01.07)