Which of the following alternative septic systems DOES NOT recycle water to the environment by evaporation?

If your lagoon develops anaerobic conditions, the easiest way you can bring back aerobic bacteria and algae is by adding:

If sewage backs up into a home from the septic system:

One way to maximize the nutrients removed from a site is to harvest wetland plants several times during the growing season.

Soils with very slow or fast percolation are more likely to allow non-point source discharge of effluent.

Which system was the first system to meet the NSF std. 350?

On-site wastewater treatment systems have established effluent limits from the EPA just as public sewage treatment plants have.

There can be no benching greater than 20 feet total depth unless designed and approved by a registered professional engineer.

This type of fixed growth ATU has bacteria growth on the surface the media submerged in aerated wastewater.

If you are using a single pass sand filter, finer sand and a slower flow of effluent are required.