Septic Tank Maintenance
A number of households along the River Mease do not have mains drainage and so rely on septic tanks.
If they are not maintained properly, septic tanks can have a substantial impact on water quality. This is because phosphorus-rich human waste and phosphate based detergents make the effluent discharge from septic tanks nutrient rich, which then seeps through the soakaway to surface waters and aquifers.
High levels of phosphorous in a river increases nutrient levels which damage biodiversity.
Concerns include increased plant growth and algae that could choke river channels, reducing habitat and breeding for important fish species, and changing the species composition of the river.
Find out How to Look After Your Septic Tank in this section of the website.