wastewater

As part of the scheme, United Utilities will invest £200m towards upgrading 10 wastewater treatment works at Windermere and reducing spills from storm overflows into the lake to 10 per year by 2030.

Storm runoff from coastal cities can pollute bays and the ocean, but city managers argued they should not be held responsible for ocean pollution unless it came from their wastewater treatment plants.

It says the severity of wastewater and drainage development constraints will increase as a result.

Called the Wastewater Surveillance Act, if passed, it would require at least one wastewater monitoring site in every California county.

Local agencies have also invested in projects in recent years that route stormwater to spreading basins or use purified wastewater to replenish groundwater.