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Septic Registry

Licensed septic companies in Duncan, Oklahoma

2 businesses on Oklahoma’s septic licensing records give an address in Duncan, along with 2 individually licensed professionals. Duncan is in Stephens County, which has 2 in total.

Individually licensed professionals in Duncan

Licensed professionals in Duncan
NameLicenceCityExpires
Eddie PhippsSubsurface absorption · Lagoon · Aerobic with spray dispersalNo. 402DuncanNot stated
Richard EdwardsSubsurface absorption · Aerobic with spray dispersalNo. 1021DuncanNot stated

More licensed companies elsewhere in Stephens County

A Oklahoma licence is valid statewide. These are based in the same county but a different town, and can legally work in Duncan.

Septic licensing in Duncan

How many licensed septic companies are there in Duncan?
2 businesses give Duncan as their address on Oklahoma's septic licensing records, alongside 2 individually licensed professionals. That count is of businesses based in Duncan, not of everyone who will work there — a Oklahoma licence is valid across the state.
Do I have to use a company based in Duncan?
No. Licensing is statewide, so any licensed company can legally work in Duncan. Stephens County has 2 in total, and companies in neighbouring counties can travel too. Being local usually matters for call-out speed and price, not permission.
How do I check a Duncan septic company is really licensed?
Every listing here names the record it came from and the date that record was published. To confirm it is still current, check with DEQ's own certified installer list.

Other towns in Stephens County

Records as published August 26, 2026. Report a correction.