| State |
Institute |
| California |
Orange County |
| Alameda County Water District |
| Castaic Lake Water Agency |
| City of Corona |
| City of Grover Beach |
| City of Palo Alto |
| City of Petaluma |
| City of Santa Barbara |
| City of Santa Rosa |
| Coachella Valley Water District |
| Contra Costa Water District |
| Cucamonga Valley Water District |
| East Bay Municipal Utility District |
| Helix Water District |
| Irvine Ranch Water District |
| Marina Coast Water District |
| Mesa Water District |
| Metropolitan District of Orange County |
| Metropolitan Water District |
| Monterey Water Conservation |
| Monte Vista Water District |
| Newhall County Water District |
| North Marin Water District |
| Rancho California Water District |
| Riverside Public Utilities |
| Rowland Water District |
| Sacramento Suburban Water District |
| San Diego County Water Authority |
| San Juan Water District |
| Santa Clara Valley Water District |
| Santa Monica Water |
| Solano County Water Agency |
| Soquel Creek Water District |
| Texas |
City of Allen |
| City of Austin |
| City of Frsico |
| City of McKinney |
| Round Rock |
| San AntonioWater System |
| Nevada |
Southern Nevada Water Authority |
| Florida |
Apoka |
| Manatee County |
| Miami-Dade Water & Sewer Department |
| Orlando |
