Pick up any litter you see around the streets, such as cans, plastic bags and cigarette butts
Pick up your dog's droppings. Washed into storm water they increase bacteria levels in rivers and the sea
If you can, clean your car on the lawn - ideally without carwash solutions. Or, take it to a car wash
Sweep up grass clippings and leaves and put them on your garden, rather than hosing them into drains
Clean paint brushes in the laundry sink, or in a bucket that you tip somewhere in your garden
Leave small left-overs of paint and solvents to dry rather than pouring them down the drain
Take household chemicals, waste oil etc. to the specific sections at official landfills. Shovel up soil, rubbish and cement when you build
Join a community group to help restore a stream or clean a beach