Idaho environmental covenants

An environmental covenant is one tool Idaho uses to place limits on a property where contamination is left in place. The Idaho Department of Environmental Quality (DEQ) describes it as a legal instrument recorded on property and governed by the Uniform Environmental Covenants Act (Idaho Code § 55-30). DEQ signs each covenant, receives a copy of the recorded document, and says it maintains an environmental covenant registry.

In a Phase I ESA

An environmental covenant is a restriction on activity and use, the kind of record ASTM E1527-21 lists under state institutional and engineering control registries. The general reading of a control listing is on the State/Tribal Institutional and Engineering Control Registries page.

Five details shape how to read one.

• A covenant means contamination remains. DEQ says the use of environmental covenants recognizes that not all contamination needs to be cleaned up, provided the risks to human health and the environment from the residual contamination are adequately addressed. The covenant can be used as part of a risk-based cleanup to control those risks.
• The limits are specific. DEQ calls the restrictions activity and use limitations. Its examples are prohibiting extraction of groundwater, excavation of soil, or any structures or buildings, and restricting the land to nonresidential uses. The limits can apply to specific restricted areas on the property. DEQ's package for a covenant includes a legal description and a map. Read them, and compare the restricted area with the planned use.
• It runs with the land. The parties bind themselves and their successors in interest to the land. DEQ says the property owner files the covenant with the county recorder's office and sends a copy of the recorded covenant back to DEQ. Check the county record as well as DEQ's.
• The owner has yearly duties. DEQ says the terms specify reporting obligations for the owner: notice of a transfer of the property to a new owner, and an annual compliance report to DEQ verifying in writing that the activity and use limitations remain in place and are complied with. Ask for the annual reports. A gap in them is worth a question.
• It sits inside a cleanup program. DEQ says environmental covenants can only be used on properties where environmental response projects are under a state or federal environmental remediation program. So a covenant points to a program file, such as a Leaking Underground Storage Tank case or a Voluntary Cleanup Program site.

The pages read describe activity and use limitations. They do not describe a separate list of engineering controls. DEQ's brownfields page says cleanup can include restricting uses such as extraction of groundwater, so check the county land records for restrictions as well as the registry.

Where to look a site up

• DEQ's Facility Mapper page says the map tool it links includes information on sites that have had activity and use limitations put in place as environmental covenants, and that the tool's Feature Information tab gives direct access to a site's covenant documents.
• DEQ's Environmental Covenant page says DEQ maintains a registry. The page does not link the registry itself. It links the covenant template and the annual reporting form.

Getting the file

The recorded covenant is at the county recorder's office. For DEQ's copy, the annual compliance reports and the cleanup file behind the covenant, DEQ takes requests under the Idaho Public Records Act through its Public Records Request page, which carries buttons to submit a request online, track its status and search the request archives.

Sources

Idaho Department of Environmental Quality pages, read October 1, 2026:

• Environmental Covenant, last modified January 7, 2026.
• Facility Mapper, last modified January 8, 2026.
• Leaking Underground Storage Tanks in Idaho, last modified January 8, 2026.
• Voluntary Cleanup Program, last modified January 7, 2026.
• Brownfields in Idaho, last modified January 7, 2026.
• Public Records Request, last modified August 18, 2026.