InterNACHI Inspection Graphics Library: Plumbing >> General >> residential_sewer_and_storm_water_systems-02.jpg
and
InterNACHI Inspection Graphics Library: Plumbing >> General >> common_residential_sewer_lateral-01.jpg
InterNACHI Inspection Graphics Library: Plumbing >> General >> sewer_backflow_valve-03-03__1_.jpg
Thousands more at InterNACHI Inspection Graphics Library: Collections .
Free.
very nice, thank you
Our free inspection gallery keeps growing: InterNACHI Inspection Graphics Library: Collections