Our Services

It depends on the county and the project. DEQ subdivision reviews, pressure-dosed systems, sand mounds and sites with high groundwater generally need an engineered design. Even where it isn't required, a complete engineered package tends to move through review with fewer delays and/or questions.

Timeframes vary depending on current workload and the specifics of each property, so every project is estimated individually as it is reviewed. Sites that need groundwater monitoring have to be watched through the spring and summer high-water season before the application can be submitted, so call early if your lot is near a creek, river, irrigation or general high water.

A test pit is an excavation, usually about 8 feet deep, near the proposed drainfield. The soil layers are logged and classified to set the application rate and to find any limiting layer such as poor soils, groundwater, or bedrock. The county uses the soils report to confirm the design fits the site.

Many lots in Montana carry sanitary restrictions until DEQ approves water and wastewater for them. Lifting the restrictions is a DEQ subdivision review showing the lot can support a septic system, a water supply and the required rules and setbacks.

It depends on the system type and what the site needs, each property is unique and may require differing analysis. You receive a written estimate before any work begins. County and DEQ review fees are paid separately to the agency.