The list of supporting businesses, associations' full memberships, alliances, coalitions, organizations, and individual districts continues to gain momentum - now almost 26,000 from across the country! 

This list will be updated as quickly as possible and total numbers may not be perfectly reflected at all times

Statewide Associations/Organizations

• California Special Districts Association
• Florida Association of Special Districts
• South Carolina  Association of Special Purpose District
• Special Districts Association of Colorado
• Special Districts Association of Oregon
• Utah Association of Special Districts
• Wyoming Association of Special Districts
• Arizona Special Districts Alliance
• American LIbrary Association
• Arizona Fire Districts Association
• California Alliance for Jobs
• California Association of Local Agency Formation Commissions
• California Association of Public Cemeteries
• California Association of Recreation and Park Districts
• California Association of Sanitation Agencies
• California Municipal Utilities Association
• California Rural Water Association
• Colorado Water Congress
• CSDA Finance Corporation
• EveryLibrary Institute
• Fire Districts Association of California
• Illinois Library Association
• Illinois Association of Park Districts
• International Association of Fire Chiefs
• Mosquito and Vector Control Association of California
• Oregon Association of Conservation Districts
• Oregon People's Utility District Association
• Oregon Public Ports Association
• Oregon Recreation and Park Association
• Oregon Water Resources Congress
• Special District Leadership Foundation
• Special District Risk Management Authority
• Texas State Association of Fire and Emergency Districts
• Union Hill Water Association
• Washington Association of Public Hospital Districts
• Washington Association of Sewer and Water Districts
• Washington Fire Commissioners Association
• Washington Public Utility Districts Association

Individual Districts

Arizona

• Blue Ridge Fire District
• Bowie Fire District Auxiliary
• Pinewood Sanitary District
• San Simon Fire District
• Sun City Fire
• Superstition Fire & Medical District
• Tonto Basin Fire District

California

• Alameda County Mosquito Abatement District
• Alameda County Water District
• Alamo-Lafayette Cemetery District
• Altadena Library District
• Alvarado Veterinary Hospital
• Arcade Creek Recreation and Park District
• Aromas Water District
• Auburn Area Recreation and Park District
• Bardsdale Cemetery District
• Beach Cities Health District
• Bear Valley Water District
• Beckwourth Peak Fire Protection District
• Bell Canyon Community Services District
• Biola Community Services
• Butte Valley Protection District
• Byron-Brentwood-Knightsen Union Cemetery District
• Calaveras County Water District
• Calleguas Municipal Water District
• Cambria Community Services District
• Cameron Estates CSD
• Camrosa Water District
• Chico Area Recreation & Park District
• Chino Valley Independent Fire District
• Chowchilla Cemetery District
• Clovis Veterans Memorial District
• Coachella Valley Mosquito and Vector Control District
• Coalinga-Huron Recreation and Park District
• Cobb Area County Water District
• Coconino County Treasuer
• Consolidated Mosquito Abatement District
• Contra Costa Mosquito and Vector Control District
• Contra Costa Water District
• Cordova Recreation and Park District
• Corning Cemetery District
• Corning Healthcare District
• Cortina Communityy Services District
• Costa Mesa Sanitary District
• Cosumnes Community Services District
• Crockett Community Services District
• Cucamonga Valley Water District
• Curry County Soil and Water Conservation District
• Davis Cemetery District
• Delano Mosquito Abatement District
• Delhi County Water District
• Delta Mosquito and Vector Control District
• Desert Healthcare District
• Diablo Water District
• Donner Summit Public Utility District
• Dublin San Ramon Services District
• Dunnigan Fire Department
• East Kern Health Care District
• East Side Mosquito Abatement District
• Eastern Sierra Community Service District
• Eden Health District
• El Dorado County Fire Protection District
• Elsinore Valley Cemetery District
• Exeter Public Cemetary District
• Fair Oaks Cemetery District
• Fallbrook Food Pantry
• Fallbrook Health District
• Fallbrook Regional Health District
• Fallbrook Union Elementary School District
• Feather River Air Quality Management District
• Foothill Municipal Water District
• French Camp Fire District
• Fresno Metropolitan Flood Control District
• Fresno Mosquito and Vector Control District
• Fulton-El Camino Recreation and Park District
• Galt Arno Cemetery District
• Garden Valley Fire Protection District
• Georgetown Divide Public Utility District
• Gold Ridge Resource Conservation District
• Golden Valley Municipal Water District
• Goleta Sanitary District
• Grizzly Flats Community Services District
• Grossmont Healthcare District
• Groveland Community Services District
• Gualala Community Services District
• Hayward Area Recreation and Park District
• Healthy Petaluma District
• Heritage Ranch Community Services District
• Hidden Valley Lake Community Services District
• Hi-Desert Water District
• Hilmar Cemetery District
• Hilmar County Water District
• Hopland Cemetery Special District
• Hopland Fire Protection District
• Hornbrook Community Services District
• Humboldt Bay Municipal Water District
• IHSS Public Authority of Marin
• Indian Valley Community Services District
• Inverness Public Utility District
• Jamestown Sanitary District
• Keeler Community Service District
• Kensington Police Protection & Community Services District
• Kern County Cemetery District #1
• Kern County Pest Control District
• Kern Mosquito and Vector Control District
• Kern River Valley Cemetery District
• Knights Ferry Municipal Advisory Council
• Lake Arrowhead Community Services District
• Lake County Vector Control District
• Lake Cuyamaca Recreation and Park District
• Lake Shastina Community Services District
• Lake Valley Fire Protection District
• Leavitt Lake Community Services District
• Live Oak Cemetery District
• Los Angeles County Sanitation Districts
• Los Osos Community Services District
• Madera/Chowchilla Resource Conservation District
• Mammoth Community Water District
• Marin City Community Services District
• McFarland Rec & Park District
• McKinleyville Community Services District
• Mesa Water District
• Midpeninsula Regional Open Space District
• Mid-Peninsula Water District
• Midway City Sanitary District
• Mission Hills Community Services District 
• Modesto Irrigation District
• Mokelumne Hill Cemetery District
• Mokelumne Hill Veterans Memorial District
• Montara Water and Sanitary District
• Monte Rio Recreation and Park District
• Monte Vista Water District
• Montecito Water District
• Monterey County Mosquito Abatement District
• Monterey County Regional Fire Protection District
• Monterey Peninsula Water Management District
• Mount Shasta Recreation and Parks District
• Mt. View Sanitary District
• Muir Beach Community Services District
• Municipal Water District of Orange County
• Napa County Regional Park and Open Space District
• Napa County Resource Conservation District
• NCD / Friends of Fallbrook Library
• North Kern Cemetery District
• North Santa Clara RCD
• North Sonoma Coast Fire Protection District
• Northeast Willows Community Services District
• Oak Hill Cemetery
• Oceano Comunity Services District
• Olympic Valley Public Service
• Orange County Cemetery District
• Orland Cemetery District
• Oro Loma Sanitary District
• Otay Water District
• Oxnard Harbor District
• Palm Springs Cemetery District
• Parlier Cemetery District
• Phelan Piñon Hills CSD
• Pinetop Fire District (CON 96)
• Pioneer Fire Protection District
• Pit Resource Conservation Districts
• Pleasant Hill Recreation and Park District
• Pleasant Valley Recreation and Park District
• Pomerado Cemetery District
• Ponderosa Community Services District
• Potter Valley Cemetery District
• Potter Valley Irrigation District
• Quartz Hill Water District
• Quincy Fire Protection District
• Rainbow Municipal Water District
• Rancho Adobe Fire Protection District
• Reclamation District No. 1000
• Resort Improvement District No. 1
• Resource Conservation District of Greater San Diego County
• Resource Conservation District of Santa Cruz County
• Rim of the World Recreation and Park District
• Rio Linda Elverta Recreation and Park District
• Rodeo Sanitary District
• Rosamond Community Services District
• Rossmoor Community Services District
• Rowland Water District
• Rubidoux Community Services District
• Running Springs Water District
• Russian River Cemetery District
• Sacramento Area Sewer District
• Sacramento County
• Sacramento Metropolitan Fire District
• San Andreas Recreation & Park District
• San Bernardino Valley Municipal Water District
• San Bernardino Valley Water Conservation District
• San Jacinto Valley Cemetery District
• San Lorenzo Valley Water District
• San Mateo County Mosquito and Vector Control District
• San Miguel Community Services District
• Santa Clara Valley Open Space Authority
• Santa Fe Irrigation District
• Serrano Water District
• Sewerage Commission-Oroville Region
• Shafter Recreation & Park District
• Shasta Valley Cemetery District
• Sierraville Public Utility District
• Soledad Community Health Care District
• Sonoma Resource Conservation District
• Sonoma Valley Fire District
• South Kern Cemetery District
• South San Joaquin Irrigation District
• South Santa Clara Valley Memorial District
• Southern Inyo Fire Protection District
• Southern Marin Fire Protection District
• Southgate Recreation & Park District
• Stege Sanitary District
• Sunnyslope County Water District
• Sunrise Recreation and Park District
• Sutter-Yuba Mosquito Vector Control District
• Sutter County RCD
• Sweetwater Authority
• Tahoe City Public Utility District
• Tamalpais Community Services District
• Tehachapi Valley Recreation & Park district
• Tehama County Transportation Commission
• Templeton Community Services District
• Three Valleys Municipal Water District
• Thunderbird County Water District
• Tiburon Fire Protection District
• Town of Discovery Bay Community Services District
• Tranquillity Resource Conservation District
• Truckee Donner Recreation and Park District
• Truckee Sanitary District
• Tulare Mosquito Abatement District
• Tuolumne Utilities District
• Turlock Mosquito Abatement District
• Twain Harte Community Services District
• Twentynine Palms Public Cemetery District
• Union Public Utility District
• Union Sanitary District
• Upper San Gabriel Valley Municipal Water District
• Vallecitos School District
• Valley Center Fire Protection District
• Valley Sanitary District
• Valley-Wide Recreation and Park District
• Ventura Port District/Ventura Harbor Village
• Ventura River Water District
• Visalia Memorial District
• Vista Fire Protection District
• Volcano Community Services District
• Wasco Recreation and Parks District
• Weaverville/Douglas City Parks & Recreation District
• West Basin Municipal Water District
• West County Wastewater District
• West Kern Water District
• West Side Cemetery District
• West Side Recreation & Park District
• Western Municipal Water District
• Westlands Water District
• Williams Cemetery District
• Winton Cemetery District
• Woodside Fire Protection District
• Wrightwood CSD
• Wynola Water District

Colorado

• Alamosa Mosquito Control District
• Aspen Fire Protection District
• Bear Creek Water and Sanitation District
• Beaver Creek Metropolitan District
• Bennett Park and Recreation District
• Berthoud Community Library District
• Berthoud Fire Protection District
• Bud Werner Memorial Library/East Routt Library District
• Canon City Area Fire Protection District
• Central Platte Valley Metro District
• Centennial Water & Sanitation District
• Cheyenne County Hospital District, DBA Cheyenne Manor
• Cherokee Ridge Estates Metropolitan District
• Cherry Creek Valley Water and Sanitation District
• Circuit Rider of Colorado
• Clear Creek Metropolitan Recreation District
• Coal Creek Canyon Fire Protection District
• Colorado City Metropolitan District
• Columbine Lake Water District
• Copper Mountain Consolidated Metropolitan District
• Cortez Sanitation District
• Costilla County Conservancy District
• Crystal Lakes Fire Protection District
• Crystal Park Metropolitan District
• Deer Mountain Fire Protection District
• DIA Tech Center Metropolitan District
• Eagle River Water & Sanitation District
• Eaton Fire Protection District
• Elizabeth Fire Protection District
• Elk Creek Fire Protection District
• Estes Valley Recreation and Park District
• Evergreen Metropolitan District
• Evergreen Park & Recreation District
• Fairways Metropolitan District
• Florence Fire Protection District
• Florissant Fire Protection District
• Forest Lakes Metropolitan District
• Four Mile Fire Protection District
• Fraser Valley Metropolitan Recreation District
• Frederick-Firestone Fire District
• Glacier View Fire Protection District
• Golden Gate Fire Protection District
• Grand Fire Protection District
• Haxtun Hospital District
• Highlands Ranch Metropolitan District
• Hyland Hills Park and Recreation District
• Ken-Caryl Ranch Metropolitan District
• Larkspur Fire Protection District
• Little Thompson Water District
• Louviers Water and Sanitation District
• Lowell Village Metropolitan District
• Los Pinos Fire Protection District
• Mancos Fire Protection District
• Mesa Water District
• Montrose Recreation District
• Mountain Recreation District
• Nederalnd Community Library District
• North Central Fire Protection District
• North Fork Pool Park and Recreation District
• North Shore Water District
• North-West Fire Protection District
• Nucla Naturita Fire Protection District
• Old South Gaylord Business Improvement District
• Parachute Battlement Mesa Parks & Recreation District
• Penrose Community Library District
• Pinewood Springs Water District
• Platte Canyon Fire Department
• Prospect Recreation & Park District
• Pueblo City-County Library District
• Pueblo West Metropolitan District
• Rangeview Library District (Anythink Libraries)
• Red, White and Blue Fire Protection District
• Republican River Water Conservation District
• Round Mountain Water and Sanitation District
• San Mateo County Harbor District
• St. Vrain Sanitation District
• South Arkansas Fire Protection District
• South Durango Sanitation District
• South Metro Fire Rescue
• South Routt Health Service District
• Stetson Ridge Metropolitan District No. 2
• Strasburg Fire Protection District
• Telluride Hospital District
• Three Valleys MWD
• Three Lakes Water & Sanitation District
• Trails Park & Recreation District
• Upper Thompson Sanitation District
• West Custer County Library District
• Wet Mountain Fire Protection District

Connecticut

• Enfield Fire District No. 1
• First Taxing District of Norwalk, CT

Florida

• Barefoot Bay Recreation District
• Destin Fire Control District
• East Manatee Fire Rescue District
• Englewood Area Fire Control District
• Florida Inland Navigation District
• Indian Trail Improvement District
• Iona Fire District
• The Juvenile Welfare Board of Pinellas County
• Lealman Special Fire Control District
• Lee County Mosquito Control District
• Lehigh Acres Municipal Services Improvement District
• North Palm Beach Heights Water Control District
• Parrish Fire District
• Ranger Drainage District
• San Carlos Park Fire Protection & Rescue Service District
• St Lucie West Services District
• Town of Loxahatchee Groves
• Trailer Estates Park & Recreation District
• West Coast Inland Navigation District

Idaho

• Murphy Reynolds Wilson Fire District

Illinois

• Beecher Fire Protection District
• Channahon Fire Protection District
• Frankfort Fire Protection District
• Frankfort Park District
• Kimberly Heights Sanitary District
• Oakbrook Terrace Community Park District
• Peoria Park District
• Seymour Fire Corporation
• Worth Park District

Kentucky

•  Northern Kentucky Water District

Maine

• York Sewer District

Michigan

• Ann Arbor District Library

Missouri

• Adair County Ambulance District

Montana

• Tri-Lakes Fire Services Area District

Nebraska

• Bennington Suburban Fire District #7
• Papillion Rural Fire Protection District

Nevada

• Gardnerville Ranchos GID
• Nevada Tahoe Conservation District

New Mexico

• Santa Fe-Pojoaque Soil & Water Conservation District

North Dakota

• City of Rutland

Oregon

• Baker County Library District
• Baker Valley Irrigation District
• Blue River Parks & Recreation District
• Blue River Water & Sanitation District
• Central Cascades Fire & EMS
• Charleston Rural Fire Protection District
• Chemult Rural Fire Protection District
• Chetco Community Public Library District
• Clackamas River Water
• Clatsop Care Center Health District
• Clatsop Health District
• Clean Water Services
• Colton Rural Fire District
• Colton Water District
• Columbia SWCD
• Corbett Water District
• Cornelius Rural Fire Protection District
• Corvallis Rural Fire Protection District
• Crooked River Ranch Fire & Rescue
• Curry County Soil and Water Conservation District
• Douglas County Fire District No.2
• Drakes Crossing Rural Fire Protection District
• Elgin Community Parks and Recreation District
• Englewood Diking District
• Evans Valley Rural Fire Protection District #6
• Forest Grove Rural Fire Protection District 
• Grants Pass Irrigation District
• Greater St. Helens Aquatic District
• Greater Toledo Pool Recreation District
• Illinois Valley Fire District
• Jefferson Rural Fire Protection District
• Junction City Rural Fire Protection District
• Keizer Fire District
• Klamath 911 Emergency Communications District
• Klamath Basin Improvement District
• Klamath Irrigation District
• La Grande Rural Fire Protection District
• Lake Chinook Fire and Rescue
• Lebanon Rural Fire Protection District
• Lorane Rural Fire Protection District
• Lowell Rural Fire Protection District
• Lower Umpqua Hospital District
• Malheur County SWCD
• McKenzie Fire & Rescue
• METCOM 911
• Mid-Columbia Fire and Rescue
• Mist-Birkenfeld Rural Fire Protection District
• Molalla Aquatic District
• Molalla Rural Fire Protection District # 73
• Monument Soil and Water Conservation District
• Mosier Fire District
• Multnomah County Rural Fire Protection District #10
• Neahkahnie Water District
• Nehalem Bay Fire & Rescue
• Nehalem Bay Health District
• Nehalem Bay Wastewater Agency
• Netarts Water District (PWS 00556)
• North Douglas County Fire & EMS
• Northern Wasco County Park & Recreation District
• Northern Wasco County People's Utility District
• Oregon International Port of Coos Bay
• OWW Unit II Sanitary District
• Polk County Fire District #1
• Pompadour Water Improvement District
• Port of Astoria
• Port of Bandon
• Port of Brookings Harbor
• Port of Cascade Locks
• Port of Hood River
• Port of Siuslaw
• Port of The Dalles
• Port of Tillamook Bay
• Port of Toledo
• Port of Umpqua
• Port Orford Public Library District
• Rainbow Water District
• Redmond Fire & Rescue
• Rogue Valley Sewer Services
• Row River Rural Fire Protection District
• Salem Area Mass Transit District
• Salishan Sanitary District
• Santiam Water Control District
• Scappoose Drainage Improvement Company
• Scappoose Fire District
• Scottsburg Rural Fire District
• Seal Rock Water District
• Sherman County Health District
• Shoreline Sanitary District
• Silverton Fire District
• Siuslaw Public Library District
• South Suburban Sanitary District
• Sunriver Service District
• Sunset Empire Park & Recreation District
• Sutherlin Water Control District
• SW Polk Fire District
• Tenmile Rural Fire District
• Tigard Tualatin Aquatic District
• Tri City Rural Fire Protection District #4
• Tualatin Hills Park & Recreation District
• Tualatin Valley Water District
• Umatilla County Fire District 1
• Umatilla Co Special Library District
• Upper Willamette Soil and Water Conservation District
• Urban Flood Safety and Water Quality District
• Vineyard Mountain Water and Improvement District
• Wallowa SWCD
• West Extension Irrigation District
• Western Lane Fire and EMS Authority
• West Slope Water District 
• Willamalane Park and Recreation District
• Winston-Dillard Fire District

South Carolina

• Belmont Fire Department
• Georgetown County Water and Sewer District
• James Island Public Service District
• Kershaw Co. and Lee Co. Regional Water Authority
• Laurens County Water & Sewer Commission
• Ocone
• Parker Sewer and Fire Subdistrict
• St. Andrews Public Service District

Texas

• Benbrook Library District
• Brazoria County Emergency Services District No. 3
• Forest Hill Library District
• Galveston County Water Control & Improvement District #1
• Harris County Emergency Services District No 80
• Harris County Municipal Utility District No. 361
• Harris County  Municipal Utility District No. 238
• Henderson County Texas Emergency Service District 6
• Liberty Hill Public Library District
• Montgomery County Emergency Service District 4
• Montgomery County Municipal Utility District 89
• Montgomery County WCID # 1
• Mustang Special Utility District
• North Blanco County ESD #1
• North Channel Water Authority
• Palo Pinto County Hospital District
• Reid Road Municipal Utility District No. 2
• Roman Forest PUD3
• San Jacinto River Authority
• Sheldon Road Municipal Utility District
• Spring Creek Utility District

Utah

• Angell Springs Special Service District

Washington

• Asotin County Public Utlity District
• Bacliff MUD
• Beacon Hill Water and Sewer District
• Belfair Water District #1
• Benton County PUD
• Chelan County PUD
• Clallam County PUD
• Clark Public Utilities
• Clark Regional Wastewater District
• Cowlitz County PUD
• Douglas County PUD
• Ferry County PUD
• Franklin County PUD
• Glacier Water District
• Grant County PUD
• Grays Harbor County PUD
• Grays Harbor County Water District #2
• Hartstene Pointe Water-Sewer District
• Highline Water District
• Jefferson County PUD
• Juniper Beach Water District
• King County Water District No. 90
• King County Water District No. 54
• Kitsap County PUD
• Kittitas County PUD
• Klickitat County PUD
• Lake Stevens Sewer District
• Ledgewood Beach Water District
• Lewis county PUD
• Liberty Lake Sewer and Water District No. 1
• Malaga Water District
• Mason County PUD No. 1
• Mason PUD No. 3
• Midway Sewer District
• Mukilteo Water and Wastewater District
• North City Water District
• North Perry Avenue Water District
• Northshore Utility District
• Okanogan County PUD
• Olympic View Water and Sewer
• Pacific County PUD
• Pend Oreille County PUD
• Sammamish Plateau Water and Sewer District
• Silverdale Water District
• Spokane County Water District No. 3
• NE Sammamish Sewer and Water District
• Northshore Utility District
• Skagit County PUD
• Skamania County PUD
• Stevens County PUD
• Thurston County PUD
• Union Hill Water Association
• Wahkiakum County PUD
• Water District 19
• West Sound Utility District#1
• Whatcom County PUD
• Whatcom County Water District 13
• Woodinville Water District

Wisconsin

• Edgerton Fire Protection District
• Outagamie County Board

Wyoming

• Carbon County Fire Protection District
• Fremont County Fire Protection District
• Laramie County Fire District 3
• Prairie Center Fire Protection Dist.
• Sweetwater County Fire District #1
• White Mountain Water and Sewer District
• Worland Recreational District

Private Sector Support

• Collin Cole Winn & Ulmer, PLLC
• HRGreen Inc
• John Chip Taylor Government Relations LLC
• Patrick J Phelan, Homeowner, Florida
• Precision Utility LLC
• Roach & Associates, PLLC
• Tetra Tech