| Las Vegas St WWTF | Colorado Springs | 33.25 |
| James R Dilorio Water Reclamation Facility | Pueblo | 13.58 |
| Persigo Wastewater Treatment Plant | Grand Junction | 11.48 |
| Greeley WWTP | Greeley | 8.7 |
| Northglenn WWTP | Brighton | 6.42 |
| Big Dry Creek WWTP | Westminster | 6.32 |
| Parker Water + Sanitation District - North Water Reclamation Facility | Parker | 5.23 |
| Jd Phillips Water Reclamation Facility | Colorado Springs | 5 |
| Rainbow Park WWTP | Florence | 4.72 |
| South Ft. Collins Sanit. Dist. | Fort Collins | 3.89 |
| St Vrain Sanitation District | City Of Longmont | 3.3 |
| Lafayette WWTF | Lafayette | 2.87 |
| South Adams County Water And Sanitation Distrct Incorporated | Henderson | 2.82 |
| Fort Lupton WWTF | Fort Lupton | 2.77 |
| City Of Louisville | Louisville | 2.73 |
| Town Of Windsor Sewarage Treatment Plant | Windsor | 2.67 |
| Steamboat Springs WWTP | Steamboat Springs | 2.6 |
| Cherokee Metro District Water Reclamation Facility | Colorado Springs | 2.51 |
| Mulberry WWTP | Fort Collins | 2.47 |
| Breckenridge Sanitation District | Breckenridge | 2.22 |
| Widefield Wsd | Fountain | 2.15 |
| Golden City Of | Jefferson County | 1.9 |
| Hill-N-Park STP | Greeley | 1.8 |
| La Junta City Of | La Junta | 1.71 |
| Sterling City Of | Sterling | 1.66 |
| Aspen Consolidated Sanitation District | Aspen | 1.59 |
| Berthoud Town Of WWTP | Berthoud | 1.57 |
| Clifton #2 West WWTP | Clifton | 1.5 |
| Tri Lakes WWTF | Monument | 1.47 |
| San Juan (formerly Vista) WTP | Pagosa Springs | 1.47 |
| Vail WWTP | Vail | 1.43 |
| Regional WWTF | Alamosa | 1.25 |
| Delta WWTP | Delta | 1.18 |
| Woodmen Hills Metro Dist WWTF | Peyton | 1.13 |
| City Of Trinidad | Trinidad | 1.13 |
| Upper Monument Crk Reg WWTF | Colorado Springs | 1.13 |
| Telluride Regional WWTF | Telluride | 1.08 |
| Pinery WWTF | Parker | 1.08 |
| Fruita Wastewater Reclamation Facility | Fruita | 1.07 |
| Harold D Thompson Regional WW Reclamation Facility | Fountain | 1.06 |
| Craig WWTF | Craig | 1.01 |
| Upper Thompson WWTP | Estes Park | 0.96 |
| Rifle Reg. WW Reclamation Fac. | Rifle | 0.95 |
| City Of Salida WWTP | Salida | 0.94 |
| Southwest WWTF | Cortez | 0.82 |
| Brush City Of | Brush | 0.78 |
| Stonegate Village Metro Dist | Parker | 0.75 |
| Upper Fraser Valley Treatment Plant | Fraser | 0.72 |
| Gypsum WWTF | Gypsum | 0.7 |
| Las Animas WWTP | Las Animas | 0.7 |
| Monte Vista City Of | Monte Vista | 0.68 |
| Buena Vista Sanitation District WWTF | Buena Vista | 0.66 |
| Woodland Park City Of | Woodland Park | 0.65 |
| Eagle WWTF | Eagle | 0.65 |
| Table Mountain WWTF | Grand Lake | 0.64 |
| Estes Park Sanitation District | Estes Park | 0.64 |
| Rocky Ford Sewage Lagoons | Rocky Ford | 0.61 |
| Low Point WWTP | Johnstown | 0.56 |
| Granby Sanitation District WWTF | Granby | 0.55 |
| Black Hawk/central City Sd WWTF | Black Hawk | 0.53 |
| Milliken Sanitation District | Milliken | 0.49 |
| Evergreen WWTP | Evergreen | 0.49 |
| Wray City Of-WTP Clearwell | Wray | 0.43 |
| West Montrose Sanitation Dist WWTF | Montrose | 0.42 |
| Mt Cb Water + Sanitation District Water Treatment Plant Expansion | Mount Crested Butte | 0.37 |
| Leadville Sanitation District | Leadville | 0.35 |
| Southern Ute Indian Tribe | Ignacio | 0.35 |
| Georgetown WWTP | Georgetown | 0.32 |
| Hayden Town Of | Hayden | 0.31 |
| Mead, Town Of | Mead | 0.29 |
| Idaho Springs City Of | Idaho Springs | 0.26 |
| Palisade WWTF | Palisade | 0.24 |
| Copper Mountain Consolidated Metro District | Copper Mountain | 0.24 |
| Cripple Creek, City Of, WWTP | Cripple Creek | 0.23 |
| Lake City Area STP | Lake City | 0.23 |
| St. Marys Glacier Wsd | Idaho Springs | 0.22 |
| Winter Park Wsd WWTF | Winter Park | 0.21 |
| Florissant Wsd | Florissant | 0.2 |
| Meeker Sanitation District | Meeker | 0.19 |
| Olathe WWTP | Olathe | 0.19 |
| Hotchkiss WWTP | Hotchkiss | 0.19 |
| Julesburg Town Of | Julesburg | 0.18 |
| Perry Park Wsd | Larkspur | 0.18 |
| Keenesburg, Town Of | Keenesburg | 0.17 |
| Nucla WWTF | Nucla | 0.16 |
| Del Norte WWTF | Del Norte | 0.16 |
| Fairplay Sanitation District WWTF | Fairplay | 0.14 |
| Paonia WWTF | Paonia | 0.14 |
| Veterans Center WWTF | Monte Vista | 0.13 |
| Kersey, Town Of | Kersey | 0.12 |
| Mancos Town Of | Mancos | 0.11 |
| Spring Valley Ranch WWTF | Englewood | 0.11 |
| Roaring Fork Wsd WWTF | Carbondale | 0.11 |
| North La Junta Sd | La Junta | 0.11 |
| Dolores WWTP | Dolores | 0.1 |
| Silverton Town Of | Silverton | 0.1 |
| Antonito Town Of | Antonito | 0.1 |
| Round Mountain Water And Sanitation District | Westcliffe | 0.1 |
| Creede WWTF | Creede | 0.09 |
| Loma Linda San Dist WWTF | Durango | 0.09 |
| La Jara WWTP | La Jara | 0.09 |
| Sageport Wastewater Treatment Plant | Larkspur | 0.09 |
| Morrison Creek Metro Water & | Oak Creek | 0.07 |
| Cucharas Swd | La Veta | 0.07 |
| La Veta Town Of | La Veta | 0.07 |
| Walden, Town Of | Walden | 0.07 |
| Costilla County W&s System | San Luis | 0.07 |
| Crawford WWTF | Crawford | 0.07 |
| Hot Sulphur Spr. WWTP | Hot Sulphur Springs | 0.07 |
| Yampa Town Of-Treatment For Inf Gal Yampa River | Yampa | 0.06 |
| Kit Carson WWTF | Kit Carson | 0.05 |
| Mountain Wsd | Conifer | 0.05 |
| Spring Valley Sd WWTF | Glenwood Springs | 0.05 |
| Victor City Of | Victor | 0.04 |
| Teller County WW Utility Board | Divide | 0.04 |
| Collbran WWTP | Collbran | 0.04 |
| Kiowa Town Of-Chlorinator For Lower West Well | Kiowa | 0.04 |
| Tabernash Meadows Wsd WWTF | Tabernash | 0.04 |
| Red Cliff Town Of | Red Cliff | 0.04 |
| Steamboat Lake Wsd | Steamboat Springs | 0.04 |
| Will-O-Wisp Md | Bailey | 0.03 |
| Upper Valley Sanitation Dist. | Bayfield | 0.03 |
| Debeque Town Of | De Beque | 0.03 |
| Fort Garland Water & San Dist | Fort Garland | 0.03 |
| Lake Eldora Wsd WWTF | Nederland | 0.02 |
| Aspen Park Metropolitan District | Conifer | 0.02 |
| Grand Mesa WWTF | Mesa | 0.02 |
| Eldorado Springs WWTF | Eldorado Springs | 0.02 |
| Conifer Metropolitan District | Conifer | 0.02 |
| Stagecoach State Park | Oak Creek | 0.02 |
| Redstone Wsd WWTF | Redstone | 0.02 |
| Steamboat Lake State Park | Clark | 0.01 |
| Galeton Water & San District | Galeton | 0.01 |
| Cokedale WWTF | Cokedale | 0.01 |
| Clear Creek Regional WWTP | Evergreen | 0.01 |
| Peyton High School | Peyton | 0 |
| Edith Wolford Elem School WWTF | Black Forest | 0 |
| Gilpin County School District Re-1 | Blackhawk | 0 |
| Avondale & Fort Reynolds Wwtps | Avondale | — |
| Campo WWTF | Campo | — |
| Fowler Town Of-Cl2 For North Springs | Fowler | — |
| Lochbuie Town Of | Lochbuie | — |
| Penrose WWTF | Penrose | — |
| Sand Creek Water Reuse Facilty | Aurora | — |
| Somerset WWTF | Somerset | — |
| Upper Eagle Regional Water Authority Plant | Avon | — |