Updated
Does Idaho require a septic license?
Yes. Idaho requires septic installers to hold a state credential issued by the Idaho's seven public health districts, under Idaho DEQ rules. Idaho installers and pumpers hold permits from the public health districts. Idaho Code 9-348 prohibits using the state's lists as a mailing or phone list.
Who licenses septic contractors in Idaho?
Idaho's seven public health districts, under Idaho DEQ rules.
Idaho's septic credentials:
- Standard/basic installer registration permit
- Complex installer registration permit
- Septic pumper permit
How to check a septic contractor's license in Idaho
- Open the Idaho's seven public health districts, under Idaho DEQ rules lookup.
- Search by the contractor's name, the license holder's name or the license number.
- Check the license type covers your job (installation, pumping or inspection) and that the status is active.
- If the contractor's business name doesn't come up, ask which person on staff holds the license: several states license individuals, not companies.
Septic permits in Idaho
A contractor license says who may do septic work; a permit authorizes a specific system. In Idaho, permits for new systems, replacements and most repairs come from the local health department or the state agency office that covers the property. Ask your installer to pull the permit and include the fee in the quote.
Licensed septic companies in Idaho
The Septic Guide lists 1,148 septic companies and licensed professionals in Idaho, 1,138 matched to the state's published list. Source list: Public health district permitted installer and pumper lists. This is what we could match as of October 2026, not an official count.
- Kootenai County (173)
- Canyon County (102)
- Bonner County (94)
- Ada County (91)
- Bannock County (38)
- Bonneville County (37)
- Jefferson County (37)
- Bingham County (35)
All septic companies in Idaho →
Idaho septic licensing: common questions
Do you need a license to install septic systems in Idaho?
Yes. Idaho requires septic installers to hold a state credential issued by the Idaho's seven public health districts, under Idaho DEQ rules. Idaho installers and pumpers hold permits from the public health districts. Idaho Code 9-348 prohibits using the state's lists as a mailing or phone list.
Who issues septic licenses in Idaho?
The Idaho's seven public health districts, under Idaho DEQ rules issues Idaho's septic credentials: Standard/basic installer registration permit; Complex installer registration permit; Septic pumper permit.
How do I check a septic contractor's license in Idaho?
Open the Idaho's seven public health districts, under Idaho DEQ rules lookup. Search by the contractor's name, the license holder's name or the license number. Check the license type covers your job (installation, pumping or inspection) and that the status is active. If the contractor's business name doesn't come up, ask which person on staff holds the license: several states license individuals, not companies.
How many licensed septic contractors are in Idaho?
The Septic Guide lists 1,148 septic companies and licensed septic professionals in Idaho, 1,138 of them matched to the Idaho Public Health Districts / Idaho DEQ list (data as of October 2026). This counts what we could match; it is not an official total.
Do you need a permit for a septic system in Idaho?
New septic systems, replacements and most repairs need a permit before work starts. The permit comes from the local health department or the state agency office that covers your property, and the permit, not the contractor license, is what authorizes a specific job.
Sources: Idaho's seven public health districts, under Idaho DEQ rules; state license lists loaded into The Septic Guide. See how we verify licenses.