Mulching mower in top picture returns clippings to lawn where they belong. Leaves raked into street also end up in storm drain, causing pollution. Boy using rotary spreader leaves fertilizer on paved surface where it will get washed into storm drain, causing pollution. Drop spreader in top picture is a better option. Weak turf by corner of driveway leaves soil unprotected.
Sediment can wash into storm drain causing pollution.
In top picture, girl cleans up after dog promptly, before feces can damage turf or get washed into storm drain. Woman overwaters lawn causing runoff down driveway. In top picture, she is using a coffee can to measure how much water will infiltrate into lawn before runoff occurs. That way, she can calculate how long she can run sprinklers without overwatering lawn. Fluids from leaky van and improperly stored and handled products in the garage are washed down the driveway and into storm drain causing pollution.