Mid-Size Systems in California

214 mid-size systems in California, ranked by infrastructure stress score.

Community water systems serving between 10,000 and 100,000 people. Mid-size systems occupy a transitional zone — large enough to face complex infrastructure demands but often without the rate base or organizational depth of major utilities.

SystemPop. ServedMISIBand
CITY OF VACAVILLE100K20.713Watch
TRACY, CITY OF97K23.713Watch
CARLSBAD MWD95K33.865Watch
PADRE DAM MWD94K30.202Watch
CITY OF MERCED94K20.710Watch
CITY OF REDWOOD CITY93K25.438Watch
CITY OF WESTMINSTER91K25.351Watch
CITY OF REDDING90K32.696Watch
PLACER CWA - FOOTHILL90K20.188Watch
OLIVENHAIN MWD86K22.710Watch
CHINO, CITY OF86K20.643Watch
WESTERN MWD86K28.186Watch
MANTECA, CITY OF85K34.592Watch
NAPA, CITY OF85K25.939Watch
INDIO WATER AUTHORITY85K22.288Watch
GOLETA WATER DISRICT84K23.713Watch
CITY OF BUENA PARK82K25.351Watch
CITY OF MILPITAS82K34.939Watch
CITY OF MOUNTAIN VIEW82K28.346Watch
CITY OF ALHAMBRA80K29.188Watch
UPLAND, CITY OF78K30.180Watch
CITY OF PLEASANTON77K33.345Watch
CHINO HILLS, CITY OF76K27.845Watch
DESERT WATER AGENCY75K17.693Stable
TURLOCK, CITY OF73K18.375Stable
LAS VIRGENES MWD73K30.439Watch
TULARE, CITY OF72K14.712Stable
CITY OF YUBA CITY70K23.550Watch
CITY OF NEWPORT BEACH69K25.351Watch
LODI, CITY OF68K16.716Stable
CITY OF DAVIS67K26.456Watch
CITY OF PALO ALTO67K29.010Watch
CAL AMERICAN WATER CO67K26.663Watch
CITY OF TUSTIN67K25.351Watch
CITY OF MADERA67K14.464Stable
WATSONVILLE, CITY OF65K27.444Watch
CITY OF BRENTWOOD65K25.351Watch
PORTERVILLE, CITY OF63K33.636Watch
CITY OF LA HABRA63K29.014Watch
CITY OF PITTSBURG63K29.014Watch
HANFORD, CITY OF62K24.304Watch
CITY OF WOODLAND61K22.710Watch
PETALUMA, CITY OF61K19.446Stable
CITY OF GILROY59K29.304Watch
GSWC-SAN DIMAS57K32.934Watch
ALCO WATER SERVICE56K30.704Watch
MONTE VISTA CWD56K36.690Watch
CALAM - SUBURBAN55K28.202Watch
CITY OF LINCOLN55K22.440Watch
CERES, CITY OF55K37.299Watch
RIALTO, CITY OF54K22.688Watch
LAKE HEMET MWD53K32.139Watch
CITY OF SAN CLEMENTE52K25.351Watch
DELANO, CITY OF51K22.710Watch
CITY OF ARCADIA51K23.442Watch
CALAM - PARKWAY51K20.710Watch
GSWC - ARTESIA50K23.442Watch
POWAY, CITY OF50K32.302Watch
UC - DAVIS50K34.657Watch
CITY OF BREA48K37.008Watch
CALAM - LINCOLN OAKS48K22.710Watch
CITY OF LOS BANOS47K33.636Watch
CITY OF MORGAN HILL47K31.280Watch
CAMARILLO WATER DEPT47K22.710Watch
COLTON, CITY OF47K34.635Watch
OILDALE MWC45K32.592Watch
ROHNERT PARK, CITY OF44K25.401Watch
EL CENTRO, CITY OF44K24.688Watch
MISSION SPRINGS WD43K10.996Stable
DIABLO WATER DISTRICT43K25.351Watch
GSWC - NORWALK43K25.442Watch
CITY OF SAN BRUNO43K25.442Watch
SAN DIEGUITO WD40K26.663Watch
CALEXICO, CITY OF40K35.614Watch
ADELANTO, CITY OF40K38.611Watch
GSWC - CLAREMONT40K27.395Watch
SAN GABRIEL COUNTY WD39K21.190Watch
CITY OF LIVERMORE39K17.353Stable
GSWC - CULVER CITY38K25.442Watch
VAUGHN WC INC37K20.710Watch
RAMONA MUNICIPAL WD37K30.704Watch
RUBIDOUX COMMUNITY SD37K29.932Watch
STANFORD UNIVERSITY36K22.350Watch
CRESCENTA VALLEY CWD36K33.436Watch
CALAM - ANTELOPE36K22.710Watch
LAKESIDE WD36K32.385Watch
FALLBROOK PUD35K22.710Watch
CITY OF LATHROP35K20.669Watch
HEMET, CITY OF34K20.694Watch
EAST NILES CSD33K33.636Watch
BANNING, CITY OF32K20.694Watch
CITY OF BURLINGAME31K22.441Watch
LA VERNE, CITY WD31K25.438Watch
CITY OF MARTINEZ31K36.585Watch
SCWA MATHER-SUNRISE31K25.638Watch
VALLEY CENTER MWD30K22.710Watch
CITY OF ATWATER29K20.710Watch
Pechanga29K22.710Watch
DINUBA, CITY OF27K25.638Watch
LEMOORE, CITY OF27K20.641Watch
CITY OF BENICIA27K23.710Watch
EUREKA, CITY OF27K21.687Watch
GSWC-SOUTH ARCADIA27K23.442Watch
BRAWLEY, CITY OF27K35.614Watch
GALT, CITY OF27K14.712Stable
CWS - SELMA27K14.712Stable
HI DESERT WD26K36.635Watch
PARK WC - COMPTON26K33.141Watch
CITY OF SANGER26K31.636Watch
REEDLEY, CITY OF26K14.712Stable