Tap Truth EPA drinking water records, in plain English

County drinking water records

Monterey County, CA drinking water systems

158 community water systems serve Monterey County, CA, reporting 442,610 people served in all. A system that also serves other counties counts all of its customers here.

52 of them (33%) had at least one health-based violation in the last 10 years. 48 systems still have one unresolved.

141 rely mainly on groundwater and 17 on surface water, counting water bought from other systems.

140 systems filed a lead service line inventory listing 0 lead lines, 286 galvanized lines that must be replaced and 25,682 lines of unknown material.

Community water systems
158
People served, sum of each system's own figure
442,610
Systems with a health-based violation, last 10 years
52
Systems with one unresolved
48
Lead service lines in inventories
0

Water systems serving Monterey County

158 systems

People served is each system's own figure for its whole service area. Violation counts cover the last 10 years of EPA records.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
CWSC Salinas Salinas and Boronda 123,679 Groundwater 0 0 0
Cal Am Water Company - Monterey Monterey, Del Monte Forest and 6 more 92,450 Groundwater under direct influence 0 0 0
Alco Water Service Salinas 56,253 Groundwater 0 0 0
Marina Coast Water District Marina, Seaside and 1 more and land outside them 38,377 Groundwater 0 0 0
City of Soledad Soledad 19,455 Groundwater 0 0 0
City of Greenfield Greenfield 18,967 Groundwater 0 1 0
CWSC King City King City 16,334 Groundwater 0 0 0
City of Gonzales Gonzales 8,327 Groundwater 0 0 0
Castroville Community Services District Castroville 7,515 Groundwater 0 0 0
PSMCSD - Pajaro Pajaro and land outside it 6,500 Groundwater 0 0 0
CWSC Salinas Hills Spreckels and land outside it 5,293 Groundwater 0 0 0
Correctional Training Facility - Soledad Soledad 4,269 Groundwater 0 0 0
CWSC Oak Hills Prunedale 3,161 Groundwater 0 0 0
Aromas Water District Aromas 2,988 Groundwater 0 0 0
Salinas Valley State Prison Soledad 2,930 Groundwater 0 0 0
Seaside Municipal Water System Seaside 2,800 Groundwater 0 0 0
Fort Hunter Liggett Fort Hunter Liggett 2,753 Groundwater 0 0 0
Little Bear Water Company Pine Canyon and land outside it 2,327 Groundwater 1 0 0
CWSC Las Lomas Las Lomas 2,084 Groundwater 0 0 0
Tasco Spreckels Water Company Spreckels and land outside it 1,772 Groundwater 0 0 0
Cal Am Water Company - Chualar Chualar 1,139 Groundwater 0 0 0
Cal Am Water Company - Hidden Hills Outside cities and towns 1,106 Groundwater 0 0 0
Cal Am Water Company - Toro Outside cities and towns 1,065 Groundwater 0 0 0
Cal Am Water Company - Ambler Park Outside cities and towns 980 Groundwater 0 0 0
Santa Lucia Preserve WS Outside cities and towns 966 Groundwater 0 0 0
PSMCSD - Normco Prunedale 928 Groundwater 0 0 0
PSMCSD - Sunny Mesa Outside cities and towns 880 Groundwater 0 0 0
Nepenthe WS Outside cities and towns 618 Surface water 0 1 0
CSP-Pfeiffer Big Sur Outside cities and towns 585 Groundwater 0 0 0
Carmel Riviera MWC Outside cities and towns 584 Surface water 0 0 0
San Ardo WD San Ardo 575 Groundwater 1 2 No inventory
Gabilan WC Outside cities and towns 535 Groundwater 0 0 0
PSMCSD - Moss Landing Harbor WS Moss Landing 520 Groundwater 0 0 0
Cabana Holiday WS Prunedale 506 Groundwater 0 0 0
PSMCSD - Vega Rd WS #01 Outside cities and towns 438 Groundwater 0 0 0
Post Ranch Inn WS Outside cities and towns 416 Groundwater 0 0 0
Hitchcock Rd WS #01 Outside cities and towns 360 Groundwater 0 0 0
Canada Woods WC Outside cities and towns 356 Groundwater under direct influence 0 0 0
San Lucas County Water District San Lucas 315 Groundwater 6 0 0
Prunedale MWC Prunedale 277 Groundwater 2 0 0
Pedrazzi MWC Outside cities and towns 273 Groundwater 0 0 0
San Jerardo Coop WS Outside cities and towns 249 Groundwater 0 0 0
Esalen Institute WS Outside cities and towns 246 Surface water 0 0 0
Monterey Dunes Mwa Prunedale 243 Groundwater 0 1 0
Countryside Estates MWC Prunedale 243 Groundwater 1 2 0
Pond-Derosa Oaks WC Prunedale 216 Groundwater 1 2 No inventory
Paradise Lake Mutual Water Co. Elkhorn 213 Groundwater 0 0 0
Moro Rd WS #09 Prunedale 210 Groundwater 34 0 0
Paradise Rd WS #09 Prunedale 206 Groundwater 1 2 No inventory
PSMCSD - Springfield WS Outside cities and towns 200 Groundwater 34 0 0
Colonial Oak WC Inc Prunedale 198 Groundwater 3 1 0
Ventana Big Sur Inn WS Outside cities and towns 193 Surface water 0 0 0
Rolling Hills Rancho WA Prunedale 185 Groundwater under direct influence 0 1 0
Fernwood WS Outside cities and towns 184 Groundwater under direct influence 0 0 0
Foothill Estates WS Outside cities and towns 183 Groundwater 0 0 0
Struve Rd WS #02 Outside cities and towns 166 Groundwater 8 0 0
PSMCSD - Vierra Estates WS Prunedale 164 Groundwater 3 0 0
Laguna Seca WC Outside cities and towns 162 Groundwater 25 0 0
Merrill Gardens Iris Canyon WS Monterey 161 Groundwater 0 2 0
Tassajara Springs WS Outside cities and towns 150 Surface water 0 1 0
California Orchard WS Outside cities and towns 150 Groundwater 0 0 0
El Camino WC Inc Outside cities and towns 133 Groundwater 24 2 No inventory
Arroyo Center WC Outside cities and towns 130 Groundwater under direct influence 0 0 0
Coastlands MWS (Post Creek) Outside cities and towns 129 Surface water 1 1 0
Valley Creek MHP WS Outside cities and towns 129 Groundwater 14 0 0
Assisi MWC Prunedale 126 Groundwater 1 2 No inventory
Camphora Apartments Outside cities and towns 126 Groundwater 0 3 0
Princes Camp Resort WS Outside cities and towns 126 Groundwater 0 0 0
Clear Ridge WA Outside cities and towns 123 Groundwater under direct influence 11 0 0
Dolan Rd MWC Outside cities and towns 120 Groundwater 0 0 0
Pesante Rd WS #02 Prunedale 120 Groundwater 0 0 0
Bluffs WS Outside cities and towns 120 Groundwater 0 0 0
Hidden Canyon Ranch MWC Prunedale 116 Groundwater 0 0 0
Valley Oaks MHP WS Lockwood 108 Groundwater 0 0 0
Holly Hills MWC Prunedale 108 Purchased groundwater 0 0 0
Oak Heights W & R Co Inc Prunedale 105 Groundwater 15 0 0
Asoleado MWC Outside cities and towns 101 Groundwater 0 0 0
Rancho Borromeo MWC Prunedale 100 Groundwater 0 1 0
San Miguel WS #01 Prunedale 100 Groundwater 16 0 0
Cal Am Water Company - Ralph Lane Prunedale 96 Groundwater 0 0 0
Summerhill MHP WS Prunedale 95 Groundwater 0 0 0
Lomas Del Sol MWS Outside cities and towns 93 Groundwater 0 1 0
San Miguel WS #22 Prunedale 93 Groundwater 1 2 0
Oak Manor WS Prunedale 92 Groundwater 1 2 0
Vista Del Toro WS Outside cities and towns 92 Groundwater 23 2 0
McCoy Rd WS #05 Outside cities and towns 92 Groundwater 20 0 0
Robley Property MWS Outside cities and towns 92 Groundwater 0 3 0
Encinal Rd WS #01 Outside cities and towns 91 Groundwater 36 2 0
Spring Canyon WA Prunedale 90 Groundwater 7 2 No inventory
Mesa Del Toro MWC Outside cities and towns 90 Groundwater 0 0 0
Tularcitos MWC Outside cities and towns 90 Groundwater 0 0 0
Hidden Valley WA Outside cities and towns 87 Groundwater 1 2 No inventory
Iverson & Jacks Apts WS Outside cities and towns 86 Groundwater 0 0 0
Lake San Antonio MHP WS Outside cities and towns 84 Groundwater 0 2 0
PSMCSD - Langley/Valle Pacifico WS Prunedale 81 Groundwater 0 0 0
Strawberry Rd WS #06 Prunedale 78 Groundwater 0 0 0
Blackie Rd WS #05 Prunedale 78 Groundwater 0 0 0
Manzanita Hills WA Outside cities and towns 75 Groundwater 0 0 0
Apple Ave WS #02 Outside cities and towns 75 Groundwater 1 3 No inventory
Harbor View WA Elkhorn 75 Groundwater 1 2 No inventory
Glenn Ave WS #01 Prunedale 73 Groundwater 1 2 No inventory
Woodside WA Outside cities and towns 73 Groundwater 0 3 0
Los Carneros Mwa Aromas 70 Groundwater 0 0 0
Arroyo Seco Estates MWS Outside cities and towns 70 Groundwater 1 2 0
San Vicente MWC Outside cities and towns 69 Groundwater 2 0 0
Moro Cojo Mwa Prunedale 67 Groundwater 1 0 No inventory
Murphy Hill WS #02 Outside cities and towns 66 Groundwater 1 2 0
Vierra Knolls MWC Prunedale 66 Groundwater 1 2 0
Hidden Views MHP WS Outside cities and towns 65 Groundwater 0 0 0
Murphy Hill WS #01 Outside cities and towns 65 Purchased groundwater 1 2 0
Garlen Court WS Prunedale 65 Groundwater 4 2 No inventory
River Rd WS #25 Outside cities and towns 65 Groundwater 34 3 0
Vierra Meadows MWC Prunedale 65 Groundwater 1 0 0
Leafwood Community WA Elkhorn 64 Groundwater 1 2 No inventory
Pioneer Place MWS Outside cities and towns 64 Groundwater 0 0 0
Z Ranch MWC Outside cities and towns 62 Groundwater 0 0 0
Elkhorn Rd WS #04 Prunedale 60 Groundwater 0 0 0
PSMCSD - Blackie Rd WS Prunedale 60 Groundwater 0 0 0
Delany WC Outside cities and towns 60 Groundwater 0 0 0
North Shore Estates WS Outside cities and towns 60 Groundwater 0 0 0
Royal Oak Place WS Prunedale 60 Groundwater 0 0 0
Chetmoore Acres WA Prunedale 59 Groundwater 0 0 0
Thimio MWC Elkhorn 59 Groundwater 7 0 0
Rancho Chaparral MWC Outside cities and towns 58 Groundwater under direct influence 9 0 0
Tierra Meadows HOA WS Outside cities and towns 58 Groundwater 0 0 0
Woodland Heights MWC Prunedale 57 Groundwater 0 0 0
Jost Post WA Outside cities and towns 56 Groundwater 0 1 0
Desmond Rd WS #03 Prunedale 56 Groundwater 0 0 0
Green Acres WA Outside cities and towns 56 Groundwater 0 0 0
Del Monte Farms Rd WS #03 Prunedale 55 Groundwater 0 0 0
Cachagua Mutual WS (#4) Outside cities and towns 55 Groundwater 0 2 0
Corda Rd WS Outside cities and towns 54 Groundwater 7 0 No inventory
Tierra Vista MWC Outside cities and towns 54 Groundwater 4 2 No inventory
Apricot Ln WS Prunedale 53 Groundwater 0 0 0
Pesante Rd WS #06 Prunedale 50 Groundwater 1 2 No inventory
San Juan Rd WS #01 Aromas 49 Groundwater 0 0 0
Maher Rd WS #05 Prunedale 48 Groundwater 0 4 0
Tierra Verde MWC Outside cities and towns 48 Groundwater 0 4 0
Baumann Rd WS #01 Prunedale 48 Groundwater 0 0 0
Paradise Rd WS #21 Elkhorn and land outside it 48 Groundwater 1 2 0
Foothill WA Outside cities and towns 46 Groundwater 1 2 No inventory
San Miguel WS #03 Prunedale 45 Purchased groundwater 0 0 0
Echo Valley Rd WS #05 Prunedale 45 Groundwater 0 0 0
Sunny Acres MWS Outside cities and towns 45 Groundwater 1 2 No inventory
Mount Toro Ranchos Mwa Outside cities and towns 45 Groundwater 0 0 0
New Camaldoli Hermitage WS Outside cities and towns 44 Groundwater under direct influence 0 1 0
Paradise Rd WS #05 Prunedale 42 Groundwater 0 0 0
Brandon Creek MWS Outside cities and towns 41 Surface water 1 2 0
Calera Canyon Heights HOA Outside cities and towns 40 Groundwater 0 0 0
Berry Dr WS #02 Outside cities and towns 40 Groundwater 0 0 0
Royal Sierra Estates WS Outside cities and towns 36 Groundwater 11 0 0
Pine St WS #01 Soledad 36 Groundwater 0 0 0
Outlook WA Outside cities and towns 35 Groundwater 0 0 0
Partington MWC Outside cities and towns 35 Surface water 10 0 0
Williams - RC Farms WS Gonzales and land outside it 35 Groundwater 1 2 0
Orchard Ln WS #02 Prunedale 32 Groundwater 0 0 0
Cal Am Water Company - Garrapata Outside cities and towns 30 Groundwater under direct influence 0 0 0
Bradley-Lockwood Rd WS Outside cities and towns 25 Groundwater 0 0 0

Cities and towns in Monterey County

28 places

Back to California

Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations