Google search: Water Quality Report 2021

Pasadena
Chloramine

Burbank
Chloramine

La Canada
Chloramines

La Crescent
Chloramines
(heavy amounts)

La Verne
Chlorine

Laguna Beach
Chloramines

San Gabriel
chlorine

San Bernardino
Chlorine

San Dimas
Chloramines

Corona
Chloramines

Claremont
Chloramines

Costa Mesa
Chloramines

New Port Beach
Chloramines

Huntington Beach
Chloramines

Irvine
Chloramines

Riverside
Chloramines

Arcadia
Chlorine

Monrovia
Chlorine

El Monte
Chlorine

West Covina
Chloramines

Palm Desert
Chlorine

Rancho Mirage
Chlorine

Rialto
Chlorine

Altadena
Chloramines

Sierra Madre
Chlorine

Ontario
Chloramines + UV light

Tehachapi
Chlorine

Pomona
Chloramines

Yorba Linda
Chloramines

Montebello
Chlorine

Valencia
Chloramines

San Diego
Chloramines

Oceanside
Chloramines

Sacramento
Chloramines

Roseville
Chloramines