California Water Quality Directory
Find detailed information about water quality in cities and ZIP codes across California. Discover which contaminants might be present and understand how they compare to EPA and recommended limits.
Cities starting with "B"
Badger
Baker
Bakersfield
Baldwin Park
Ballico
Bangor
Banning
Bard
Barstow
Bass Lake
Bayside
Beale Afb
Beaumont
Beckwourth
Belden
Bell Gardens
Bella Vista
Bellflower
Belmont
Belvedere Tiburon
Ben Lomond
Benicia
Benton
Berkeley
Berry Creek
Bethel Island
Beverly Hills
Bieber
Big Bar
Big Bear City
Big Bear Lake
Big Bend
Big Creek
Big Oak Flat
Big Pine
Big Sur
Biggs
Biola
Birds Landing
Bishop
Blairsden Graeagle
Blocksburg
Bloomington
Blue Jay
Blue Lake
Blythe
Bodega
Bodega Bay
Bodfish
Bolinas
Bonita
Bonsall
Boonville
Boron
Borrego Springs
Boulder Creek
Boulevard
Bradley
Brandeis
Branscomb
Brawley
Brea
Brentwood
Bridgeport
Bridgeville
Brisbane
Brookdale
Brooks
Browns Valley
Brownsville
Buellton
Buena Park
Burbank
Burlingame
Burney
Burnt Ranch
Burson
Butte City
Buttonwillow
Byron
About Water Quality
Water quality is a measure of the suitability of water for a particular use based on selected physical, chemical, and biological characteristics. In California, water quality can vary significantly by location, affected by factors such as:
Understanding Contaminants
Water contaminants include a wide range of substances from natural minerals to industrial chemicals. Some have health implications, while others affect taste, odor, or appearance of water.
EPA Standards
The Environmental Protection Agency (EPA) sets legal limits for contaminants in drinking water. These standards protect public health by limiting the levels of contaminants allowed.
Health Guidelines
Beyond EPA limits, there are often stricter health-based guidelines recommended by scientists and health organizations for optimal water quality.
Common Contaminants
Common water contaminants in California include arsenic, lead, nitrates, bacteria, pesticides, and industrial chemicals that can vary by region.