Mid-Size Systems in California

212 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 VACAVILLE97K17.193Stable
TRACY, CITY OF97K20.193Watch
CARLSBAD MWD95K30.345Watch
PADRE DAM MWD94K26.682Watch
CITY OF MERCED94K17.190Stable
CITY OF REDWOOD CITY93K21.918Watch
CITY OF WESTMINSTER91K25.351Watch
CITY OF REDDING90K29.176Watch
PLACER CWA - FOOTHILL90K16.668Stable
OLIVENHAIN MWD86K19.190Stable
CHINO, CITY OF86K15.145Stable
WESTERN MWD86K22.688Watch
MANTECA, CITY OF85K31.072Watch
NAPA, CITY OF85K22.419Watch
INDIO WATER AUTHORITY85K16.790Stable
GOLETA WATER DISRICT84K20.193Watch
CITY OF BUENA PARK82K25.351Watch
CITY OF MILPITAS82K38.529Watch
CITY OF MOUNTAIN VIEW82K28.346Watch
CITY OF ALHAMBRA80K25.668Watch
UPLAND, CITY OF78K24.682Watch
CITY OF PLEASANTON77K33.345Watch
CHINO HILLS, CITY OF76K22.347Watch
DESERT WATER AGENCY75K9.994Stable
TURLOCK, CITY OF73K14.855Stable
LAS VIRGENES MWD73K26.919Watch
TULARE, CITY OF72K7.988Stable
CITY OF YUBA CITY70K20.030Watch
CITY OF NEWPORT BEACH69K25.351Watch
LODI, CITY OF68K11.996Stable
CITY OF DAVIS67K26.456Watch
CITY OF PALO ALTO67K29.010Watch
CAL AMERICAN WATER CO67K23.143Watch
CITY OF TUSTIN67K25.351Watch
CITY OF MADERA67K7.492Stable
WATSONVILLE, CITY OF65K23.924Watch
CITY OF BRENTWOOD65K25.351Watch
PORTERVILLE, CITY OF63K30.116Watch
CITY OF LA HABRA63K29.014Watch
CITY OF PITTSBURG63K29.014Watch
HANFORD, CITY OF62K20.784Watch
CITY OF WOODLAND61K22.710Watch
PETALUMA, CITY OF61K15.926Stable
CITY OF GILROY59K29.304Watch
GSWC-SAN DIMAS57K29.414Watch
ALCO WATER SERVICE56K27.184Watch
MONTE VISTA CWD56K31.192Watch
CALAM - SUBURBAN55K24.682Watch
CITY OF LINCOLN55K18.920Stable
CERES, CITY OF55K33.779Watch
RIALTO, CITY OF54K17.190Stable
LAKE HEMET MWD53K26.641Watch
CITY OF SAN CLEMENTE52K25.351Watch
DELANO, CITY OF51K19.190Stable
CITY OF ARCADIA51K19.922Stable
CALAM - PARKWAY51K17.190Stable
GSWC - ARTESIA50K19.922Stable
POWAY, CITY OF50K28.782Watch
UC - DAVIS50K34.657Watch
CITY OF BREA48K37.008Watch
CALAM - LINCOLN OAKS48K19.190Stable
CITY OF LOS BANOS47K30.116Watch
CITY OF MORGAN HILL47K31.280Watch
CAMARILLO WATER DEPT47K19.190Stable
COLTON, CITY OF47K31.113Watch
OILDALE MWC45K29.072Watch
ROHNERT PARK, CITY OF44K21.881Watch
EL CENTRO, CITY OF44K19.190Stable
MISSION SPRINGS WD43K7.906Stable
DIABLO WATER DISTRICT43K25.351Watch
GSWC - NORWALK43K21.922Watch
CITY OF SAN BRUNO41K21.922Watch
SAN DIEGUITO WD40K23.143Watch
CALEXICO, CITY OF40K30.116Watch
ADELANTO, CITY OF40K33.113Watch
GSWC - CLAREMONT40K23.875Watch
SAN GABRIEL COUNTY WD39K17.670Stable
CITY OF LIVERMORE39K17.353Stable
GSWC - CULVER CITY38K21.922Watch
VAUGHN WC INC37K17.190Stable
RAMONA MUNICIPAL WD37K27.184Watch
RUBIDOUX COMMUNITY SD37K24.434Watch
STANFORD UNIVERSITY36K22.350Watch
CRESCENTA VALLEY CWD36K29.916Watch
CALAM - ANTELOPE36K19.190Stable
LAKESIDE WD36K28.865Watch
FALLBROOK PUD35K19.190Stable
CITY OF LATHROP35K17.149Stable
HEMET, CITY OF34K19.149Stable
CAMROSA WATER DISTRICT33K19.190Stable
EAST NILES CSD33K30.116Watch
BANNING, CITY OF32K19.149Stable
CITY OF BURLINGAME31K18.921Stable
LA VERNE, CITY WD31K21.918Watch
CITY OF MARTINEZ31K36.585Watch
SCWA MATHER-SUNRISE31K22.118Watch
VALLEY CENTER MWD30K19.190Stable
CITY OF EAST PALO ALTO30K18.921Stable
CITY OF ATWATER29K17.190Stable
LEMOORE, CITY OF27K17.121Stable
CITY OF BENICIA27K20.190Watch
EUREKA, CITY OF27K18.167Stable
GSWC-SOUTH ARCADIA27K19.922Stable
BRAWLEY, CITY OF27K30.116Watch
GALT, CITY OF27K7.988Stable
CWS - SELMA27K7.988Stable
HI DESERT WD26K31.137Watch
PARK WC - COMPTON26K29.621Watch
CITY OF SANGER26K28.116Watch
REEDLEY, CITY OF26K7.988Stable
HOLLISTER, CITY OF26K25.486Watch
WINDSOR, TOWN OF26K5.464Stable