On-site Wastewater Treatment Systems

San Juan Basin Public Health (SJBPH) is the regulatory authority for on-site wastewater treatment system (OWTS) permitting in La Plata, Archuleta, and San Juan Counties.

SJBPH has regulated OWTS, also known as septic systems, since 1967. Due to updated State of Colorado standards, SJBPH adopted new local Regulations that went into effect on Jan. 1, 2018.

SJBPH will offer classes and workshops for OWTS practitioners to become familiar with the requirements of the new Regulations. You can find more information and scheduling on the tabs below.


Septic System Services


EH Main Line | 970 335 2052

OWTS Regulations

Current copy of the OWTS regulations.

Environmental Health Fee Schedule

Current fee schedule for sanitation and consumer protection services.

The Numbers

on-site wastewater treatment system permits issued last year