How to check a septic pumper or inspector license
This site is a transcription of public lists, not a live license server. Lists go stale. Confirm with the agency that issued the credential before you hire.
Montana
DEQ licenses septic tank pumpers. The public list we transcribed is 2026 Licensed Montana Septic Pumpers as of 20 May 2026. Program: Septic Tank Pumper.
- Match the company name and the S- license number on the current PDF — not only on this site.
- DEQ (program page): licenses expire 31 December. Renewal applications must be received no later than 31 January. Licensees have until 1 April to renew without a late fee.
- Contacts printed on that program page: Solid Waste Management Section Supervisor Fred Collins, 406-444-9879; Waste Management Specialist Lillian Kurzhal, 406-444-1808; Data Control Technician Andrea Staley, 406-444-3493. DEQ headquarters phone on the same page: 406-444-2544.
That PDF is a pumper list. It is not an inspector roster.
North Dakota
DEQ issues yearly sanitary-pumper permits. The list we transcribed is 2026 Annual Active ND Sanitary Pumper List (licensed on or before 23 July 2026). Program: Septic Pumper Permits.
- Match company name and permit number (NDSP…) on the current PDF.
- DEQ (program page): all permits expire 31 December; renewal begins 1 January; deadline 1 March; later renewals pay new-applicant fees.
- Class I vs Class II on the list is a pumper classification, not an inspection license.
- Division of Water Quality switchboard on the DEQ site: 701-328-5150, deq@nd.gov. NDPDES permitting contacts on that staff table include Alexis Delzer, 701-328-5282, and Benjamin Westercamp, 701-328-6032 (the PDF author).
Iowa
DNR licenses commercial septic tank cleaners under Iowa Administrative Code 567 Chapter 68. The list we transcribed is the Licensed Iowa Septic Tank Cleaners PDF (metadata dated 19 August 2026). Program: Septic Tank Cleaning.
- Match the company name and numeric license on the current PDF — not only on this site.
- Three license numbers (442, 551, 553) appear twice on the August 2026 PDF for different firms; confirm which row matches the company you are calling.
- A commercial septic tank cleaner license is not a Time of Transfer inspection credential. Sale-related inspections use a separate DNR certification.
That PDF is a pumper (cleaner) list. It is not an inspector roster.
Clallam County, Washington
The county publishes separate PDFs. Use the one that matches the job.
- Pumpers: Septic Tank Pumpers PDF.
- Routine / property-sale O&M inspectors: Septic Maintenance Providers PDF.
- Permit-related inspections: designers on the reverse of that O&M PDF, which says the local list is not all Washington licensed designers.
- Professionals hub: On-site Septic Professionals.
- Environmental Health, from the county O&M page: 360-417-2506.
The O&M PDF: a septic pumper/septic pumping is not considered an inspection.
Ask your county
EPA does not license residential septic pumpers or inspectors. Frequent questions (11 March 2026): contact your local permitting authority (local health or environmental department) for professional inspectors. EPA How to Care (17 August 2026) describes what a service visit should include; it does not publish a national roster.
If your county is not Montana, North Dakota, Iowa, or Clallam, we do not invent a stand-in list. Ask:
- Who licenses pumpers here, and is there a current public list?
- Who may perform an O&M inspection vs a real-estate inspection vs a permit/system-status inspection?
- Does a pump-out count as the required inspection? (In Clallam, no.)
Then compare the name and credential number on the agency’s current file — not a screenshot of this site.