Ground water is water below the land surface that fills the
spaces between sediment and rocks, or fills cracks and fractures in the rock. Saturated zones
in sediment and fractured rock that receive, store and transmit water are called aquifers.
Most well water is of good quality. The filtering process in the soil and the long travel time
underground helps to remove any contaminants. Professionals check most town and community water
supply systems on a regular basis. It is the responsibility of homeowners to keep their
self-supplied well water free from health risk. Possible pollution from agriculture, industry,
transportation - even home sources - can pose threats to our ground water quality. Incorrect
disposal of common household chemicals, excessive use of lawn chemicals, faulty septic tank, or an
accidental spill can wreak havoc with drinking water safety.
Following is information on how to protect and, if need be, correct the water quality in your
area. For more information, contact your local Health Department.
CEHA Recommended Well Water Testing Guidelines
Well Disinfection
Well Water Information
