California — all systems

California water systems A–Z

Page 5 of 11 · Grizzly Lake Csd-delleker → Lake Balboa. Every public water system we track in California, alphabetically. Each links to the system's measured contaminant levels against federal limits.

• Grizzly Lake Csd-delleker (2025)
• Grizzly Ranch Csd (2023)
• Groskopf Warehouse & Logistics (2025)
• Groveland Community Serv Dist (2023)
• Grover Landscape Water System (2025)
• Growers Company Inc Ws (2025)
• Growers Direct Nut Company (2024)
• Growers Service Assn Ws (ice) (2025)
• Growers Transplanting Ws (2023)
• Gsa Calexico Port of Entry (2024)
• Gsa Tecate Port of Entry (2024)
• Gswc - Artesia (2025)
• Gswc - Bell, Bell Gardens (2025)
• Gswc - Calipatria (2025)
• Gswc - Claremont (2024)
• Gswc - Culver City (2025)
• Gswc - Florence/graham (2025)
• Gswc - Hollydale (2025)
• Gswc - Norwalk (2025)
• Gswc - Southwest — Hawthorne, Ca (2023)
• Gswc - Willowbrook (2025)
• Gswc-san Dimas (2024)
• Gswc-south Arcadia — San Dimas, Ca (2023)
• Gswc-south San Gabriel — San Dimas, Ca (2023)
• Guadalupe Cooling Company (2024)
• Guadalupe Valley Mid (2025)
• Guadalupe Water Department — Guadalupe, Ca (2023)
• Guardian Industries Llc (2025)
• Guatay Mutual Benefit Corporation (2024)
• Gundlach Bundschu Winery (2024)
• H & J Water Company (2023)
• H and R Facilities (2024)
• H C Muddox Co (2025)
• H2o, Inc (2025)
• Haight-Ashbury (2024)
• Halcyon Water System (2017)
• Hamilton Branch Csd (2024)
• Hamilton School (2023)
• Hancock Park (2023)
• Hanford Christian School (2024)
• Hanford, City of (2024)
• Hanot Foundation Inc (2023)
• Happy Acres Mutual Benefit Water System (2025)
• Happy Acres Mwc (2025)
• Happy Camp C.s.d. (2025)
• Happy Harbor (sws) (2024)
• Harbin Hot Springs (2024)
• Harbor City (2023)
• Harbor View Mutual Water Company (2023)
• Harbor View Wa (2023)
• Hardwick Water Company (2024)
• Harmony Haven (2024)
• Harmony Village (2024)
• Harney Lane Migrant Center Ws (2021)
• Harrington Rd Ws #07 (2024)
• Harris Farms Headquarters (2024)
• Harris Farms South 101-144 (2023)
• Harris Farms/horse Barn (2025)
• Harris Feeding Company (2025)
• Harris Moran Seed Company (2024)
• Harris Moran Seed Company - Water (2024)
• Harris Ranch Beef Co (2023)
• Harris Ranch Restaurant (2025)
• Harris Rd Ws #10 (2025)
• Harris Woolf Almonds-ballico (2025)
• Harrison Rd Ws #01 (2024)
• Hart Creek Estates Mutual Water Co. (2024)
• Hart Flat Bear Mutual Water (2023)
• Hart- Ransom Union School & District (2025)
• Hartland Christian Camp (2024)
• Hartley Mutual Water System (2017)
• Hartnell Rd Ws #1 (2024)
• Harvest at Mendosas (2024)
• Harvest Moon Mutual Water Co (2025)
• Hat Creek Highlands Mutual Water Co (2025)
• Haven Acres River Club Inc (2025)
• Haven Humane Water System (2024)
• Hawkins Water Co-cal Water Service (puc) (2023)
• Hawthorne-city Water Dept. — San Jose, Ca (2023)
• Hay Kingdom (2023)
• Hayes Valley (2024)
• Haykingdom, Inc. (2023)
• Haynes Board & Care Home (2023)
• Hayward (2024)
• Healdsburg, City of — Healdsburg, Ca (2023)
• Hearst Monument State Park (2024)
• Heath Brimhall P.o.a. (2023)
• Heather Glen Community Service Dist (2024)
• Heavenly Oaks (2025)
• Heavenly Ski Creek Station (2024)
• Heber Public Utility District (2025)
• Heck Cellars Water System (2024)
• Hedge Training Facility (2021)
• Heights Mutual Water Company (2023)
• Helendale Community Service District (2024)
• Helix Water District (2024)
• Hellwig Products Company Inc (2024)
• Helm School (2025)
• Hemet, City of (2025)
• Hemlock Mutual Water Co. (2023)
• Henry Miller Reclamation District (2024)
• Hercules (2024)
• Heritage House (2025)
• Heritage Ranch Csd (2025)
• Herlong Public Utility District (2023)
• Hesperia Wd (2025)
• Hess Winery (2025)
• Hhw&p Moccasin Compound-sfpuc (2025)
• Hi Desert Mwc (2024)
• Hi Desert Wd — Yucca Valley, Ca (2023)
• Hidden Acres Trailer Villa (2024)
• Hidden Canyon Ranch Mwc (2023)
• Hidden Harbor Marina & Rvp (2025)
• Hidden Meadow Mutual Water Co (2024)
• Hidden Valley Community Association (2025)
• Hidden Valley Lake Csd (2024)
• Hidden Valley Wa (2020)
• Hidden Views Mhp Ws (2024)
• High Desert Adult & Teen Challenge (2025)
• High Desert Detention Center (2025)
• High Valleys Water District (2022)
• Highland Mobile Home Park (2022)
• Highland Park (2023)
• Highlands Mutual Water Company (2023)
• Higuera Apartments (2021)
• Hill Country Community Clinic & Wellness (2025)
• Hillcrest (2023)
• Hills Ranch Mutual Water Company (2025)
• Hillsview Homes (2024)
• Hilltop Mwa (2023)
• Hilltop Ranch - Turlock Road (2025)
• Hilltop Ranch-looney Road (2025)
• Hillview Acres Mutual Water Company (2024)
• Hilmar Cheese Company (2023)
• Hilmar County Water District (2025)
• Hilton Mutual Water Company (2024)
• Hines Nurseries Winters North (2025)
• Hines Nursery Winters South (2022)
• Hitchcock Rd Ws #01 (2023)
• Hitchcock Rd Ws #02 (2024)
• Hitchin Lucerne Inc (2023)
• Hkn Llc (2025)
• Hmc Group Cold Storage (2024)
• Holdgrafer & Associates (2024)
• Holiday Harbor Inc (2023)
• Holiday Mobile Village (2025)
• Holland Heights Mutual Water Company (2024)
• Hollister Ranch Estates (2023)
• Hollister, City of (2023)
• Holly Hills Mwc (2023)
• Holly Ranch Village (2024)
• Hollywood (2023)
• Holt 7518 (2023)
• Holt of California (2025)
• Holtville, City of (2025)
• Home Garden Csd (2022)
• Home Gardens County Wd (2024)
• Hometown Colonial Estates Llc (2023)
• Hometown Water Association (2024)
• Honcut Elementary School (2020)
• Honda Proving Center (2024)
• Honey Lake Campground (2025)
• Honig Winery (2025)
• Hood Water Maintence Dist [sws] (2024)
• Hoot Owl Creek/alex. Valley Vineyards Jv (2025)
• Hope Elementary School (2024)
• Hope Foundation/moriah Heights (2025)
• Hopeton School (2025)
• Hopland Public Utility District (2025)
• Horicon School (2023)
• Horizon Lane Water Supply (2025)
• Horizon Nut Llc (2024)
• Hornbrook C.s.d. (2024)
• Houghton-kearney School (2025)
• Howard Elementary School (2023)
• Howell Mountain Mutual Water Company (2024)
• Howell Mountain School (2024)
• Howell's Lakeside Water Co. (2018)
• Hrc C.s.d. (2024)
• Huckleberry Mutual Water Company (2025)
• Hudson Ranch Power I Llc (2021)
• Huebert Farms (2025)
• Hughes-elizabeth Lake Unified School Dis (2025)
• Hughson Nut Company Water System (2023)
• Hughson Nut Inc. - Livingston (2023)
• Hughson, City of (2025)
• Humane Society of Sonoma County (2024)
• Humboldt Bay MWD (2023)
• Humboldt C.s.d. (2025)
• Humboldt Creamery (2024)
• Humboldt Highlands Mutual (2023)
• Humboldt Woodlands Mutual (2023)
• Hume Lake Christian Camps, Inc (2023)
• Hungry Gulch Mwc (2025)
• Hunter Valley Csd (2017)
• Hunter's Fishing Resort (2023)
• Huntington Beach (2025)
• Huntington Park-city, Water Dept. (2025)
• Huppe Moore Landscape (2022)
• Huron, City of (2025)
• Hydesville Co. W.d. (2024)
• Hynes Estates Mutual Water Co. (2025)
• I & E Lath Mill (2024)
• I-5 and Hwy 198 Rest Area (2025)
• I-5 and Panoche Development (2025)
• Idyllwild Water District (2025)
• Ihs Nor Cal Youth Trmnt Ctr(sacred Oaks) (2025)
• Iid North End Consolidation (2020)
• Iid Village (2024)
• Il Vineto (2023)
• Ilead Agua Dulce Charter School (2025)
• Imerys Filtration Minerals, Inc (2025)
• Imperial Lakes Inc. (2019)
• Imperial Manor Mobilehome Community (2023)
• Imperial Valley College (2022)
• Imperial, City of (2025)
• Improvement District No. 1 (2023)
• Indian Creek Csd (2023)
• Indian Creek Trailer Park (2025)
• Indian Hills Camp (2025)
• Indian Oaks Trailer Park (2025)
• Indian Wells Valley W.d. (2024)
• Indianola School (2024)
• Indio Water Authority (2025)
• Ingleside (2024)
• Inglewood (2023)
• Ingomar Packing (2025)
• Innisfree Water Company (2024)
• International Paper - Exeter Bulk (2022)
• Interstate 5 Utility Company (2025)
• Inverness Public Utility Dist (2023)
• Inyo County Pwd - Independence (2025)
• Inyo County Pwd - Laws Town (2025)
• Inyo County Pwd - Lone Pine (2025)
• Inyokern Csd (2025)
• Ione Band of Miwok Indians (2023)
• Irish Beach Water District (2023)
• Irish Hills Mutual Water Co (2025)
• Ironwood Camp (2023)
• Irvine Ranch Water District (2025)
• Irwindale Brewery Yard (iby) (2025)
• Island Union School (2024)
• Islander Marina (2025)
• Isot Community Water System (2024)
• Ivanhoe Public Utility Dist (2024)
• Ivanpah Solar Thermal Power Plant (2025)
• Ivcsd Crescent Mills (2024)
• Ivcsd-greenville (2024)
• Iverson & Jacks Apts Ws (2023)
• J B Hunt Transport Inc (2024)
• J G Boswell Tomato Company Llc (2025)
• J M Eagle (ws) (2025)
• J M Sims Water Supply (2024)
• J R Simplot Company (2024)
• J Vineyards & Winery (2024)
• J.g. Boswell Company Water System (2025)
• Jackson Hide-a-way (2025)
• Jackson Valley Irrigation District (2023)
• Jacoby Creek Cwd (2025)
• Jacumba Community Sd (2025)
• Jahant Woods Cellars (2024)
• James Court Water System (2025)
• Janesville Elementary School (2024)
• Jardines Del Valle (2025)
• Jarvis Mutual Water System (2024)
• Jasmine Vineyards Cold Storage (2023)
• Jdh (2023)
• Jean Harvie School [sws] (2025)
• Jed Smith Homeowners Assn. (2024)
• Jefferson Esd-jefferson School (2025)
• Jennings Wwtp (2023)
• Jensen Precast (2025)
• Jewel Date Co. Inc. (2023)
• Jireh Packing Group - Cutler (2025)
• Joe's Travel Plaza (eh) (2025)
• John B. Sanfilippo & Son, Inc. (2024)
• John Hovannisian Water System (2024)
• John Latoracca Correctional Facility (2025)
• Johns Manville (2023)
• Johnstonville Elementary School (2025)
• Johnstonville Water System (2025)
• Joint Regional Water Supply System (2024)
• Jojoba Hills Skp Resort, Inc. (2025)
• Jolly Giant Flea Market (2024)
• Jonata Homeowners Association (2021)
• Jordan Vineyard & Winery (2023)
• Joseph Cold Storage Llc (2024)
• Joseph Gallo Cheese Co. (2024)
• Joshua Basin Water District (2025)
• Jost Post Wa (2025)
• Js West Milling Co Hilmar Ranch (2025)
• Juan Mean Burrito Water System (2025)
• Juanita Court Mutual Water (2024)
• Jubilee Mwc (2024)
• Julian Community Services District (2024)
• Junction City School (2025)
• Junction Elementary School (2017)
• Junction School District (2025)
• June Lake Pud - Down Canyon (2024)
• June Lake Pud Village (2024)
• Juniper Riviera Cwd (2025)
• Jurupa Community Sd (2025)
• Juvenile Justice Campus (2024)
• Kearny Mesa (2023)
• Keefer Creek Estates (2024)
• Keeler Community Service District (2024)
• Keeler Yard LADWP (2024)
• Keenan Farms Inc. (2023)
• Kellogg Garden Products (2023)
• Kelly Mutual Water Company (2025)
• Kelseyville Co Waterworks District 3 (2024)
• Ken Mar Gardens (2025)
• Kendall-jackson Winery Ws (2023)
• Kennon Water Company (2025)
• Kensington (2024)
• Kenwood Village Water Company (puc) (2025)
• Kenwood Vineyards and Winery (2024)
• Keough's Hot Springs (2025)
• Kerman, City of (2024)
• Kern Energy (2025)
• Kern Mobile Estates Llc (2025)
• Kern Ridge Growers (2025)
• Kern Valley Mutual Water Company (2022)
• Kern Valley State Prison (2025)
• Kernvale Mutual Water Co (2025)
• Kettleman City Csd (2023)
• Keyes Community Services Dist. (2025)
• Kidz Can 2 (2023)
• Kiefer Landfill [sws] (2025)
• Kiernan Business Center (2024)
• Kiernan/mchenry Water Company, Inc (2024)
• Kind Real Estate, Llc Ws (2023)
• Kinecta Fcu (2025)
• King Fresh Packing & Cooling (2024)
• King Island Trailer Park Water System (2025)
• Kings Canyon High School (2024)
• Kings Canyon Mobile Home Park (2024)
• Kings Park Apartments (2024)
• Kings River Elementary School (2024)
• Kings River Estates Mutual Water Company (2023)
• Kings River Hardwick School (2025)
• Kings River Packing Company (2024)
• Kings River Packing-centerville (2025)
• Kings River Point (2022)
• Kingsburg, City of (2025)
• Kingvale Property Owners & Water Users (2025)
• Kinneloa Irrigation Dist. (2025)
• Kinnybrook Mutual Water Company (2024)
• Kirkwood Elementary School (2023)
• Kirkwood Meadows Public Utility District (2025)
• Kitayama Brothers (2025)
• Kj Carneros Hills Winery (2025)
• Klamath C.s.d. (2024)
• Knapheide Truck Equipment Company (2025)
• Kneeland School (2025)
• Knights Ferry Comm. Svc. Dist. (2025)
• Knights Landing Svc. Dist. (2025)
• Knightsen Community Water System (2022)
• Knightsen Elementary School (2023)
• Knoll Enterprises (2024)
• Knott S Berry Farm (2024)
• Konocti County Water District (2025)
• Konocti Shores (2024)
• Korbel Brothers Winery (2025)
• Koreatown (2023)
• Korths Pirates Lair (2025)
• Kranenburg Water System (2022)
• Krista Mutual Water Company (2023)
• Krotona Institute (2025)
• Kyburz Mutual Water Company (2025)
• La Canada Irrigation Dist. (2025)
• La Cima Fire Center (2024)
• La Crema Winery (2025)
• La Cumbre Mutual Water Co — Santa Barbara, Ca (2023)
• La Habra Heights Cwd (2024)
• La Jolla (2023)
• La Puente Valley Cwd (2024)
• La Tierra Heights Mutual (2024)
• La Torres Park (2025)
• La Valle Sabbia Inc. (2022)
• La Verne, City Wd (2024)
• La Vina School (2025)
• Lacsd - Rimforest (2023)
• Lactalis Heritage Dairy (2024)
• LADWP - Big Pine (2011)
• Laetitia Vineyard & Winery Inc (2024)
• Lafayette (2024)
• Laguna Beach County Wd — Laguna Beach, Ca (2023)
• Laguna Del Sol Inc (2025)
• Laguna Mountain Mutual Water Co. (2024)
• Laguna Negra Mutual Water Co. (2025)
• Laguna Seca Recreation Ws (2025)
• Laguna Seca Wc (2025)
• Laguna Village Rv Park (2022)
• Laguna Vista School/oceanview School Dis (2024)
• Laird Family Estate (2025)
• Lake Almanor Country Club Mwc (2023)
• Lake Alpine Water Company (2025)
• Lake Arrowhead Csd — Lake Arrowhead, Ca (2023)
• Lake Balboa (2023)