On rural Dolores County land, septic is its own homework

In rural Dolores County, a home that is not connected to a municipal sewer handles its own wastewater with a septic system, also called an on-site wastewater treatment system, or OWTS. Outside the sewer service areas of the towns, that is a common arrangement, and it is worth checking on any rural property you are considering.

A septic system is part of the property, like a roof or a well. It can work fine for decades, or it can be old, undersized, or failing. The tank and the drainfield both age, and a bad system is expensive to fix. The soil and the lay of the land affect whether a site can support a system at all, which matters for vacant land you might want to build on.

In Colorado, the detailed rules are set locally, under statewide minimum standards. That means permits, inspections, and what counts as an acceptable system are handled by the county or its health agency, not by a single statewide office. So the right questions are local: when was the system last inspected or pumped, is it permitted, and what does the county require at a sale or for a new build.

Before you rely on a septic system here, confirm the local rules and the system’s condition with the county and Colorado’s on-site wastewater program at CDPHE.