On-site Sewage Programs

Wheat Field

On-site Sewage Treatment Information

DEQ Certified Installers

DEQ Certified Soil Profilers

DEQ Licensed Septage Pumpers and Transporters

2023 Proposed Rule Changes for Chapter 641 and 645

252:641 Draft Individual and Small Public On-Site Sewage Treatment Systems

252:641 Draft Appendices

Rule Impact Statement Chapter 641

252:645 Draft Septage Pumpers and Transporters

Rule Impact Statement Chapter 645






Beginning on or after May 1, 2022, the Oklahoma Department of Environmental Quality will begin assessing customers making any payment via credit or debit card a merchant fee in the amount of 2.25% of the credit/debit card payment amount. Additionally, DEQ will also charge a portal fee of $2.00 for each transaction paid by a credit or debit card. Customers paying by electronic check/ACH transaction will be assessed a merchant fee of $1.00. For questions regarding the above-referenced fees, please email ARHelpdesk@deq.ok.gov

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