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World wastewater treatment plant observatory · data as reported by each inventory

Wastewater treatment plants in United States · California

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486 inventory records · HydroWASTE v1.0 / United States

Data years: 2012. The inventory date does not establish current operation.

486 results

CompareNameNative sizeYear
Lompoc Regional WRPHW:2591457,123 population served2012
SOCWA Coastal WWTPHW:2624056,966 population served2012
Tahoe Truckee WWTPHW:2616756,539 population served2012
Novato WWTFHW:2586954,479 population served2012
Brentwood WWTPHW:2601353,194 population served2012
Corona WWTF 2HW:2622453,000 population served2012
Yucaipa Valley WD WWTPHW:2622252,100 population served2012
El Toro Water District WWTFHW:2623851,539 population served2012
Western Riverside Co Reg WWTPHW:2622151,514 population served2012
Saugus WRPHW:2594951,313 population served2012
WOODLAND WWTFHW:2597149,151 population served2012
CAMARILLO WWTFHW:2596848,000 population served2012
San Clemente WRPHW:2625548,000 population served2012
Brawley WWTPHW:2619947,679 population served2012
Los Alisos WRPHW:2626546,500 population served2012
Sonoma Valley WWTFHW:2586845,768 population served2012
HOLLISTER INDUST WWTFHW:2592145,533 population served2012
HANFORD WWTFHW:2597345,000 population served2012
PINOLE WWTFHW:2587943,287 population served2012
San Luis Obispo WRFHW:2588643,000 population served2012
Coachella WWTPHW:2620142,951 population served2012
ELK RIVER WWTFHW:2578742,760 population served2012
Yuba City WRPHW:2602642,706 population served2012
SOLEDAD WWTFHW:2588940,183 population served2012
Ironhouse WWTPHW:2587440,000 population served2012
EL CENTRO WWTFHW:2618440,000 population served2012
LA SALINA WWTFHW:2625740,000 population served2012
Sewerage Commis Oroville Reg WWTPHW:2603639,101 population served2012
TULARE WWTFHW:2598039,000 population served2012
Delano WWTFHW:2600138,423 population served2012
Moorpark WWTFHW:2596037,576 population served2012
CERES WWTPHW:2604637,338 population served2012
Laguna CSD WWTFHW:2591335,000 population served2012
PASO ROBLES WWTPHW:2589833,673 population served2012
Lake Elsinore Regional WWTPHW:2623333,500 population served2012
FALLBROOK WWTF 1HW:2623933,373 population served2012
LAKE CO SE REG WWTFHW:2610832,868 population served2012
Burlingame WWTPHW:2583432,696 population served2012
Selma Kingsburg Fowler CSD WWTFHW:2602032,622 population served2012
LOS BANOS WWTFHW:2598932,380 population served2012
OSO CREEK WWRFHW:2626331,398 population served2012
CARMEL WWTFHW:2589430,600 population served2012
Sewer Authority Mid Coastside WWTFHW:2586230,500 population served2012
LAS GALLINAS VALLEY WWTFHW:2587630,500 population served2012
BANNING WWTFHW:2620430,319 population served2012
Santa Paula WRFHW:2596929,500 population served2012
BIG BEAR AREA REG WWTFHW:2621429,462 population served2012
MOUNTAIN VIEW WWTFHW:2583929,000 population served2012
S MARIN SUBREG OUTFALLHW:2588328,000 population served2012
Alberhill WWTPHW:2623228,000 population served2012
ATWATER WWTFHW:2604527,205 population served2012
WINDSOR WWTFHW:2580526,950 population served2012
Stillwater WWTFHW:2604126,900 population served2012
Deer Creek WWTPHW:2610426,670 population served2012
San Elijo WRFHW:2625026,600 population served2012
GALT WWTFHW:2600826,093 population served2012
Barstow WRFHW:2616625,850 population served2012
Corona WWTP 3HW:2622525,000 population served2012
LEMOORE STPHW:2612924,000 population served2012
El Dorado Hills WWTPHW:2610523,946 population served2012
RIVERBANK WWTFHW:2601922,924 population served2012
American Canyon WWTFHW:2586022,809 population served2012
ATASCADERO WWTFHW:2588721,915 population served2012
Ukiah WWTFHW:2582421,353 population served2012
OAKDALE WWTFHW:2597021,274 population served2012
REEDLEY WWTPHW:2610121,206 population served2012
MILLBRAE MADRONE WWTFHW:2585021,175 population served2012
DINUBA WWTFHW:2607321,087 population served2012
DAVIS CAMPUS WWTFHW:2607221,006 population served2012
Mammoth Community WWTFHW:2616920,185 population served2012
OJAI VALLEY SD WWTFHW:2593220,000 population served2012
SASM WWTFHW:2583619,561 population served2012
Hollister Domestic WWTPHW:2592019,500 population served2012
WASCO WWTFHW:2602419,500 population served2012
Grass Valley WWTFHW:2608219,000 population served2012
Lathrop WRP 1HW:2598218,908 population served2012
Crossroads Wastewater Treatment PlantHW:2598318,908 population served2012
DIXON WWTFHW:2609518,536 population served2012
Placer County WWTF 1HW:2608618,000 population served2012
Lamont WWTFHW:2612718,000 population served2012
Arcata WWTFHW:2581117,752 population served2012
Camrosa Water Reclamation FacilityHW:2596317,740 population served2012
Morro Bay Cayucos WWTFHW:2589217,284 population served2012
SONORA WWTPHW:2604816,969 population served2012
SUSANVILLE REG WWTFHW:2616316,814 population served2012
GREENFIELD WWTFHW:2589716,510 population served2012
Carpinteria WWTFHW:2591916,000 population served2012
L ARROWHEAD WWTFHW:2617215,581 population served2012
CALEXICO WWTFHW:2618615,344 population served2012
LEE LAKE WD WWTPHW:2623715,344 population served2012
FILLMORE WWTFHW:2596215,145 population served2012
RIPON WWTFHW:2599015,000 population served2012
NEEDLES WWTFHW:2620314,950 population served2012
Parlier WWTFHW:2603514,826 population served2012
OLIVEHURST WWTFHW:2599214,000 population served2012
LINCOLN WWTFHW:2609414,000 population served2012
LIVINGSTON DOMESTIC STPHW:2613213,824 population served2012
BENICIA WWTFHW:2587313,682 population served2012
KERMAN WWTFHW:2597813,659 population served2012
Marysville WWTFHW:2605913,627 population served2012

Regulatory context

General reference. This is not an exhaustive review of applicable law.

United States: Clean Water Act / NPDES

NPDES regulates pollutant discharges from point sources to waters of the United States. The permit sets limits and monitoring conditions. A CWNS code identifies an inventory record, not an NPDES permit.

  • Permit identifier and permitting authority: EPA or an authorized state.
  • Outfall and receiving water; sewer connections follow a different control route.
  • Current permit conditions, limits and dated measurements; these are not included in CWNS.

References reviewed: 2026-11-06. Individual applicability: undetermined. This profile does not establish authorization or compliance.