Sewer Utility Directory
Browse the sewer and wastewater utilities Sewage Monitor tracks, grouped by state. These are the ~500 most-reporting utilities in our database. For the full ranked leaderboard of worst offenders, see the utility rankings.
Alaska1 utility
Arizona2 utilities
California304 utilities
- Sacramento Area Sewer District (merged)18,588 events
- Stockton City MUD2,297 events
- Los Angeles City Bureau of Sanitation2,167 events
- Oakland City DPW2,157 events
- Palo Alto City2,134 events
- San Jose City1,805 events
- Napa Sanitation District977 events
- San Diego City Metropolitan Wastewater Dept (Public Utilities)905 events
- Central Contra Costa Sanitary District701 events
- Sacramento City687 events
- Richmond City588 events
- City of Fairfield587 events
- Antioch City562 events
- San Mateo City514 events
- Modesto City505 events
- Ross Valley SD491 events
- Roseville City488 events
- San Rafael Sanitation District466 events
- Burlingame City PWD450 events
- Mill Valley City443 events
- San Carlos City435 events
- Los Angeles Cnty DPW432 events
- City Of Long Beach420 events
- Pittsburg City385 events
- Vallejo Flood & Wastewater District (formerly Vallejo San & Flood Control District)377 events
- City Cleanout353 events
- 1914 Truxtun Avenue349 events
- Berkeley341 events
- Single Family Residence340 events
- Whittier City334 events
- West Valley SD333 events
- Folsom City - Environmental & Water Resources Dept330 events
- Hillsborough316 events
- 1136 Landing Lane315 events
- 947 Cypress Lane300 events
- Glendale City297 events
- CCSF - San Francisco Airport290 events
- Santa Barbara City PWD288 events
- South San Francisco City281 events
- 140 Andeta Way280 events
- Lake Arrowhead Community Services District274 events
- County of Fresno273 events
- Concord City268 events
- 1016 Talbot Ave. Albany, CA 94706265 events
- Redwood City264 events
- San Bernardino City Municipal Water Dept253 events
- 251 City Park Way252 events
- El Dorado Irrigation District249 events
- US Marine Corps Base Camp Pendleton249 events
- San Mateo County DPW239 events
- West County Wastewater District228 events
- Marin Cnty Sanitary District 5221 events
- Sonoma County Water Agency (SCWA)221 events
- Seaside CSD219 events
- Benicia City216 events
- Sonora212 events
- Vacaville City DPW210 events
- Novato Sanitary District205 events
- Placerville City202 events
- Cupertino Sanitary District198 events
- Monterey City197 events
- Stege Sanitary District194 events
- South Placer MUD190 events
- Rancho Palos Verdes City186 events
- Santa Monica City179 events
- Manteca City170 events
- La Mesa City163 events
- City of Redding160 events
- Linda Mar Lift Station159 events
- San Luis Obispo City157 events
- Aptos156 events
- Altamont Road154 events
- Susanville SD152 events
- San Francisco Public Utilities Commission150 events
- Laguna Beach City150 events
- Orange City146 events
- Arcata City143 events
- Los Altos City143 events
- Sunnyvale City142 events
- 10145 Roseview Drive137 events
- Santa Cruz City137 events
- West Sacramento City137 events
- City of Morgan Hill132 events
- Palos Verdes Estates City132 events
- Mt View Sanitary District130 events
- Petaluma City PWD129 events
- Sacramento City128 events
- Beverly Hills, CA127 events
- Hollister City126 events
- Blosser Basin125 events
- San Diego County Dept of Public Works125 events
- Grass Valley City121 events
- torrance120 events
- UC Los Angeles120 events
- El Dorado Irrigation District119 events
- Lake Cnty118 events
- Wasco State Prison115 events
- Corona City DWP114 events
- Sausalito113 events
- Marina Coast WD112 events
- Eureka City108 events
- Treasure Island108 events
- Red Bluff City 108 events
- Alameda City107 events
- City of Oceanside107 events
- Burbank City DPW106 events
- Camino Real Park105 events
- Coachella Valley WD103 events
- Healdsburg City102 events
- Eastern Municipal Water District101 events
- Homestead Valley Sanitary District100 events
- Pacific Grove City100 events
- South Tahoe PUD100 events
- Lodi City99 events
- Auburn City97 events
- San Andreas SD97 events
- Newport Beach City95 events
- Castro Valley Sanitary District94 events
- Sanitary District #2 of Marin94 events
- Agriculture Building - Pump Station94 events
- Carmel Area Wastewater District93 events
- Jackson City93 events
- Crockett Community Services District91 events
- Tahoe City PUD90 events
- Pebble Beach Community Service District89 events
- City of Santa Clarita 88 events
- Poppy Dr.87 events
- Tamalpais Community San Dist86 events
- Coronado City86 events
- Los Angeles City Bureau of Sanitation85 events
- Santa Ana City85 events
- Union Sanitary District84 events
- Redondo Beach City84 events
- Yreka City83 events
- Half Moon Bay City 82 events
- Elsinore Valley Municipal Water District82 events
- Placer Cnty Dept of Facility Services81 events
- West Hollywood City80 events
- San Clemente80 events
- Gilroy City78 events
- Anaheim City77 events
- Beaumont City77 events
- 754 Bridge Street76 events
- Costa Mesa Sanitary District75 events
- 25803 Clawiter Road74 events
- Los Angeles Cnty Sanitation Districts74 events
- Murphys SD74 events
- 1560 Seneca Lane (CSCSD)73 events
- Biology Field Station73 events
- 140 beach way72 events
- Santa Rosa City Utilities Dept70 events
- 10733 Ranch Road70 events
- 108 S. Mountain Ave/Foothill Blvd.70 events
- Mission Way70 events
- Rodeo Sanitary District69 events
- Greenfield City69 events
- Glendora City69 events
- Sutter Creek City69 events
- Calipatria State Prison69 events
- Garden Grove Sanitary District69 events
- 225 Hillsdale Way (ELHSMD)67 events
- Oroville City 67 events
- Angels City67 events
- Turlock City67 events
- 2800 Overland Trail67 events
- 1543 Bernice Drive66 events
- Mt Shasta City66 events
- Fort Bragg Municipal Improvement Dist 165 events
- Tracy City65 events
- 2324 Swain65 events
- Escondido City65 events
- Belmont City64 events
- 1001 Commonwealth #17662 events
- AV 310 Temescal Canyon Road62 events
- 740 N Vine AV62 events
- 311 Beech Ave62 events
- Sewer Cleanout62 events
- Diamond Bar City61 events
- Sewer Manhole on Paved Street61 events
- California State Prison - Sacramento61 events
- Truckee SD61 events
- 1675 Park St60 events
- 200 Glen Aulin Lane - BHSMD60 events
- Santa Paula City60 events
- Las Gallinas Valley Sanitary District59 events
- 3835 Vineyard Ave.59 events
- South Pasadena City59 events
- Mountain View City58 events
- Oro Loma Sanitary District58 events
- 236 East Strawberry Dr58 events
- US Dept of the Interior Park Service58 events
- 10361 Monitor Drive58 events
- CSU Dominguez Hills57 events
- 28th Street and Manhattan Ave.57 events
- Colfax City57 events
- FSP Minimum Security Facility57 events
- National City57 events
- City of Carlsbad57 events
- Piedmont City56 events
- Scotts Valley56 events
- Santa Clara City55 events
- 200 W Floral Monterey park55 events
- Oxnard Wastewater Treatment Plant55 events
- Tulare City55 events
- 1023 14th Street55 events
- 3302 Margaret55 events
- 1399 Skyline Dr54 events
- 972 Brown St.54 events
- Victorville City54 events
- Baker Barry Tunnel53 events
- Treasure Island Development Authority53 events
- North end of the Bethel Island Bridge53 events
- Lancaster City53 events
- Rio Dell City52 events
- Delta Diablo52 events
- Lakeport City52 events
- La Habra City52 events
- Fortuna City51 events
- 1000 West Foster Road @ Pioneer Park51 events
- Pasadena City51 events
- Riverbank City51 events
- Humboldt CSD50 events
- Salinas City50 events
- Oakland International Airport49 events
- Simi Valley City49 events
- Family Student Housing adjacent to Apt. 71248 events
- Brentwood City48 events
- Lake Cnty48 events
- Salton Community Services Dist48 events
- Redlands City48 events
- Eastern Municipal Water District48 events
- Pomona City46 events
- San Dimas City46 events
- UC Berkeley45 events
- Placer Cnty Dept of Facility Services45 events
- Selma CA45 events
- Colton City45 events
- 7836 Brookside Avenue43 events
- Bradfield and Kay43 events
- 12382 Circula Panorama43 events
- Kern County Public Works Department42 events
- 24681 Cordova Drive42 events
- Guadalupe City41 events
- 1232 Hollenbeck Court41 events
- Madera County Public Works Department - Special Districts41 events
- 288 Humboldt - Trinity Sewer40 events
- 16 The Alameda40 events
- San Leandro City40 events
- 7 Winding Way, San Carlos (DCSD)40 events
- 2725 Juniper40 events
- Alhambra City40 events
- Calabasas City40 events
- Twain Harte CSD40 events
- Imperial Spa40 events
- MH 43440 events
- Manhole at Saquia & REDWOOD39 events
- Montecito Sanitary District39 events
- 1240 Paso Robles St.39 events
- SBSA's Redwood City Pump Station38 events
- SLAC38 events
- Pismo Beach City 38 events
- Devereux Lift Station38 events
- Vallecitos Water District38 events
- Pinole37 events
- Foster City PWD37 events
- 1182 pacific blvd.37 events
- Claremont City37 events
- Solimar Beach Area37 events
- Santa Margarita Water District37 events
- Sonoma County Water Agency (SCWA)36 events
- DELETE Event (Same as Event 770882) - T1-B Manhole - OCSD36 events
- Thousand Oaks City 36 events
- Burney WD36 events
- Montecillo cr, Discovery Bay CA and Pescadero Cir36 events
- 1700 N Willow and 200 W Lurelane36 events
- 2560 El Camino Real35 events
- Carson City35 events
- 2761 Cooper Ave.35 events
- Kern County Public Works Department35 events
- 1101 N. Euclid Ave.35 events
- Yorba Linda Water District35 events
- Perkins and Bush St.34 events
- Almonte SD34 events
- 701 Montecito Drive, San Gabriel CA 91776634 events
- Grizzly Lake Resort Imp Dist34 events
- Nevada City34 events
- Jamestown SD34 events
- Emergency Bypass Site # 2 SAVI MH # 434 events
- Brea City34 events
- American Canyon City PWD33 events
- Correctional Training Facility33 events
- Manhole33 events
- 1598-0295 (26036 Silver Spur Road, Rolling Hills Estates)33 events
- Live Oak Lift Station33 events
- Tuolumne City SD33 events
- Fontana City DPW33 events
- Padre Dam Municipal Water District33 events
- SEWER AUTHORITY MID-COASTSIDE32 events
- 2168 - Clean-out32 events
- La Mirada City32 events
- Groveland CSD32 events
- Inland Empire Utilities Agency32 events
- Moulton Niguel Water District32 events
- Admiral Baker Field RV Park Area32 events
District of Columbia1 utility
Illinois9 utilities
- PEKIN STP #1 SSCS99 events
- MARION WRF, CITY OF SSCS79 events
- WOOD RIVER, CITY OF SSCS60 events
- FOUR RIVERS SANITATION AUTHORITY STP SSCS57 events
- LAWRENCEVILLE STP, CITY OF SSCS49 events
- BELLEVILLE STP #1, CITY OF SSCS44 events
- CARLINVILLE STP SSCS36 events
- GRANITE CITY WWTP, CITY OF SSCS36 events
- SANGAMON COUNTY WATER RECLAMATION DISTRICT SSCS31 events
Maryland84 utilities
- Cumberland WWTP6,631 events
- City of Baltimore Department of Public Works4,175 events
- WSSC1,884 events
- Patapsco WWTP1,608 events
- Back River WWTP1,358 events
- Cambridge WWTP766 events
- City of Baltimore757 events
- Frostburg Combined Sewer Overflows643 events
- Patapsco WWTP Collection System - Baltimore City543 events
- WASHINGTON SUBURBAN SANITARY COMMISSION481 events
- John J. DiFonzo Water Reclamation Facility472 events
- CUMBERLAND, CITY OF446 events
- Back River WWTP Collection System - Baltimore City363 events
- John J. DiFonzo WRF354 events
- Cumberland348 events
- FROSTBURG, CITY OF296 events
- Anne Arundel County DPW226 events
- BALTIMORE COUNTY DEPARTMENT OF PUBLIC WORKS217 events
- Baltimore County DPW Bureau of Utilities207 events
- Howard County DPW171 events
- John J. DiFonzo (Cumberland) WRF & Collection System166 events
- Frostburg Collection System165 events
- Private System149 events
- Patapsco141 events
- Patapsco WWTP Collection System - Baltimore County140 events
- City of Frostburg Combined Sewer Collection System127 events
- LAVALE SANITARY COMMISSION125 events
- Back River WWTP Collection System - Baltimore County124 events
- Back River121 events
- Blue Plains WWTP Collection System - WSSC (Mo. Co.)120 events
- ANNE ARUNDEL COUNTY DEPARTMENT OF PUBLIC WORKS117 events
- Charles County DPW117 events
- Washington County Department of Water Quality111 events
- Allegany County Sanitary Commission110 events
- Allegany County Department of Public Works Utilities Division109 events
- Ft. Meade WWTP108 events
- LaVale Collection System108 events
- LaVale Sewage Pump Station103 events
- Celanese WWTP101 events
- St Mary's County Metropolitan Commission101 events
- City of Cumberland100 events
- Cresaptown Sanitary District100 events
- ALLEGANY COUNTY DEPARTMENT OF PUBLIC WORKS97 events
- Allegany County Combined Sewer Overflows92 events
- Baltimore County DPW90 events
- LaVale Sewage Pumping Station90 events
- Salisbury WWTP90 events
- Howard County DPW Bureau of Utilities89 events
- Blue Plains WWTP Collection System - WSSC (PG. Co.)88 events
- North Branch Collection System87 events
- Jennings Run Sanitary District80 events
- Worcester County DPW78 events
- La Plata WWTP73 events
- Bedford Road Sanitary District66 events
- Thurmont WWTP64 events
- Myersville WWTP56 events
- St. Michael's WWTP56 events
- Allegany County CSO Collection System55 events
- Harford County DPW55 events
- Piscataway WWTP54 events
- Queen Anne's County Sanitary District49 events
- Red Hill49 events
- Mattawoman WWTP44 events
- Sod Run44 events
- Cox Creek WRF Collection System43 events
- LITTLE PATUXENT WRP COLLECTION SYSTEM43 events
- Army, Department of42 events
- Conococheague WWTP42 events
- Garrett County DPW42 events
- Annapolis WRF Collection System - AA County37 events
- Carroll County DPW37 events
- Sod Run WWTP37 events
- Anne Arundel County DPW Bureau of Utilities36 events
- Kent County DW&WWS36 events
- MARYLAND ENVIRONMENTAL SERVICE35 events
- Piscataway WRRF Collection System35 events
- St. Michaels, City of / MES35 events
- MES34 events
- Havre de Grace WWTP33 events
- Baltimore County DWP Bureau of Utilities32 events
- Fort Meade WWTP32 events
- John J. DiFonzo (Cumberland) WRF Collection System - Allegany County32 events
- Cecil County DPW31 events
- Frederick County Utilities & Solid Waste Management31 events
Mississippi2 utilities
Nebraska1 utility
New Hampshire1 utility
New York62 utilities
- Kenmore (V) POSS2,817 events
- Cheektowaga Sanitary Sewer1,020 events
- Metropolitan Syracuse WWTP978 events
- West Seneca (T) Sanitary ORF657 events
- Niagara Falls (C) WWTP542 events
- Kingston (C) WWTP455 events
- Watertown (C) WPCP453 events
- Ogdensburg WWTP404 events
- City of Albany CSOs306 events
- Rensselaer (C) CSOs256 events
- Hudson (C) STP229 events
- NYCDEP City Wide CSO211 events
- Tonawanda (T) SD #2 WWTP210 events
- Southtowns AWTF- ECSD #3204 events
- Buffalo Sewer Authority -Bird Island198 events
- Troy CSOs195 events
- Auburn (C) STP194 events
- Grand Island (T) SD#2 WWTP190 events
- Washington County SD #2 WWTP190 events
- Newburgh (C) WWTP185 events
- Poughkeepsie (C) WPCP175 events
- Warwick (T) SD #1 NY0021890161 events
- Mount Vernon Sewer District156 events
- Plattsburgh (C) WPCP/WRRF149 events
- Lancaster (V) Sanitary Sewer Overflow NY0243124134 events
- Lockport (C) WWTP130 events
- ECSD #4 NY0110698129 events
- Green Island (V) CSOs118 events
- Tonawanda (C) Sanitary Sewers116 events
- Chemung Co Elmira SD STP109 events
- ECSD #1 NY0091731, Cayuga ORF103 events
- Binghamton (C) CSOs93 events
- Frank E. Van Lare WWTF NY002833986 events
- Big Sister Creek WWTP - ECSD #2 NY002254384 events
- Cohoes (C) Combined Sewer Overflows NY003104682 events
- Utica (C) CSOs61 events
- Orangetown (T) SD #2 STP NY002605160 events
- Little Falls (C) WWTP NY002240356 events
- Watertown (T) SD#1 NY009909155 events
- Glens Falls (C) WWTP52 events
- Coxsackie (V) STP NY003354552 events
- Watervliet (C) CSOs51 events
- Walden (V) WWTP NY003049049 events
- Lakawanna ORF -ECSD #647 events
- Catskill (V) WWTP46 events
- Montgomery Co SD #1 NY010756546 events
- North Tonawanda (C) WWTP44 events
- Orangeburg RCSD #1 STP43 events
- Rensselaer CO SD #1 WWTP43 events
- Bay Park STP37 events
- Mamaroneck (V) Sanitary SD NY002670136 events
- Oswego (C) West Side WWTF NY002910636 events
- Union (T) Endicott POSS, NYS70002936 events
- Ramapo (T) POSS35 events
- NYCDEP Port Richmond WWTP NY002610734 events
- New Paltz (V) WWTF NY003008234 events
- Amsterdam (C) WWTP33 events
- Yonkers Joint WWTP33 events
- Dunkirk (C) WWTP NY002796133 events
- Depew(V) SSOs33 events
- Saratoga Co SD #1 WWTP32 events
- ECSD No. 4 POSS to Bird Island NYS90004032 events
North Carolina24 utilities
- Charlotte Water Collection System298 events
- Greensboro Collection System174 events
- Winston-Salem Collection System161 events
- Raleigh Collection System106 events
- Harnett County Collection System97 events
- Asheboro Collection System83 events
- MSD Buncombe County Collection System71 events
- Hickory Collection System67 events
- Durham Collection System60 events
- Henderson Collection System59 events
- Kannapolis Collection System51 events
- Lumberton Collection System51 events
- High Point Collection System50 events
- Gastonia Collection System46 events
- Rocky Mount Collection System46 events
- Albemarle Collection System45 events
- Liberty Collection System45 events
- Union County Collection System45 events
- Wilson Collection System45 events
- PWC/Fayetteville Collection System44 events
- Yadkin Valley Sewer Authority WWTP44 events
- Shelby Collection System40 events
- Thomasville Collection System37 events
- Brunswick County Collection System36 events
Puerto Rico7 utilities
- PRASA FAJARDO NUEVA WWTP COLLECTION SYSTEM58 events
- PRASA CAGUAS WWTP COLLECTION SYSTEM52 events
- PRASA MAYAGUEZ WWTP COLLECTION SYSTEM51 events
- PRASA CAROLINA WWTP COLLECTION SYSTEM46 events
- PRASA DORADO WWTP COLLECTION SYSTEM40 events
- PRASA ARECIBO WWTP COLLECTION SYSTEM36 events
- PRASA CAMUY-HATILLO WWTP COLLECTION SYSTEM33 events