The On-Site Water Protection section is responsible for the on-site sewage and private wells program that evaluates land to determine suitability for an on-site ground absorption sewage disposal (septic tank) and/or private water supply well.

Septic permits and well permits are issued after site and soil evaluations are performed and the site meets applicable conditions. Septic system reconnection permits are also issued after a site review and conditions are determined to be satisfactory. Certain alternative septic systems require maintenance management inspections. Private well water sampling is also performed.

Plans for public swimming pools are reviewed for approval and pools are permitted and inspected for compliance with health, safety, operational and maintenance requirements.

On-Site Water Protection is responsible for on-site sewage nuisance complaints, as well as nuisance complaint investigations involving rodent and garbage control. Fees are charged for many of the provided services.