Privately-owned and maintained best management practices (BMPs) located throughout the county on private residential and commercial properties are inspected for operational performance and compliance. BMPs are techniques and structural controls used to manage the quantity and improve the quality of stormwater runoff. The purpose of BMPs is to reduce or eliminate contaminants from stormwater runoff before entering our streams. Property owners are responsible for conducting periodical preventive maintenance of these BMPs (per owner’s manual) so that they function as designed. County inspectors conduct inspections triennially to verify BMPs are being properly maintained and functioning as designed.