Nitrate violations in Colorado
209 active public water systems in Colorado had a Nitrate violation in the past three years, 32 of them in the latest quarter of EPA's data. What Nitrate is and why it matters.
Systems with a Nitrate violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Highlands Camp and Retreat Center Boulder County |
63 | 5 | 2 | |
|
Hartman Town of Prowers County |
61 | 13 | 6 | |
|
North Fork Guest Ranch Park County |
60 | 1 | 0 | |
|
Tall Pines Village La Plata County |
60 | 8 | 0 | |
|
Curecanti Nra East Portal RA Montrose County |
59 | 1 | 0 | |
|
Alexander Lake Lodge Delta County |
58 | 3 | 0 | |
|
High Plains Fellowship Pca El Paso County |
58 | 1 | 0 | |
|
Peyton Pines El Paso County |
56 | 5 | 1 | |
|
Dinosaur Natl Mnt Hdqtrs Moffat County |
55 | 6 | 1 | |
|
Holbrook Center Soft WA Otero County |
54 | 6 | 1 | |
|
Golden Eagle Ranch El Paso County |
53 | 3 | 0 | |
|
Dinosaur Monument Lodore CG Moffat County |
52 | 2 | 0 | |
|
Wild Spirit Mountain Lodge LLC Park County |
52 | 2 | 0 | |
|
Blanca Forestry Products Fort Garland · Costilla County |
50 | 6 | 0 | |
|
Eden West Ranch Fremont County |
50 | 1 | 0 | |
|
Larimer County Parks Carter Lake Larimer County |
50 | 3 | 0 | |
|
Parshall Inn the Grand County |
50 | 2 | 0 | |
|
Shawnee Wca Park County |
50 | 1 | 0 | |
|
Three Mile TP Garfield County |
50 | 3 | 0 | |
|
Wildwood School Pitkin County |
50 | 3 | 1 | |
|
Gunnison River Pleasure Park Delta County |
49 | 3 | 0 | |
|
Poudre River Resort Larimer County |
49 | 2 | 0 | |
|
Western Metals Recycling Englewood · Arapahoe County |
45 | 7 | 0 | |
|
South Side WA Otero County |
44 | 9 | 1 | |
|
Happy Camper RV Park Archuleta County |
40 | 3 | 0 | |
|
Historic Pines Ranch Custer County |
39 | 5 | 1 | |
|
Saddlehorn Ranch MD El Paso County |
39 | 8 | 1 | |
|
Country Manor Motel Adams County |
37 | 1 | 0 | |
|
Inn of Glen Haven Larimer County |
37 | 5 | 0 | |
|
Old Fort Lewis La Plata County |
37 | 3 | 0 | |
|
Dinosaur Mnt Echo Park CG Moffat County |
36 | 3 | 1 | |
|
Raleigh House Watkins · Arapahoe County |
35 | 2 | 0 | |
|
Root and Vine Market Paonia · Delta County |
35 | 3 | 0 | |
|
Agape Outpost Baptist Chapel Summit County |
34 | 3 | 0 | |
|
Conifer Dental Medical Group Jefferson County |
34 | 1 | 0 | |
|
Vallecito Village La Plata County |
34 | 7 | 2 | |
|
Stumbling Moose Lodge Gunnison County |
33 | 1 | 0 | |
|
Bears Inn Bed and Breakfast Jefferson County |
32 | 1 | 0 | |
|
Cottonwood Riding Club Douglas County |
32 | 3 | 0 | |
|
Esoterra Ciderworks La Plata County |
31 | 1 | 0 | |
|
Euzoa Bible Church Routt County |
31 | 3 | 0 | |
|
Red Canyon Acres Eagle County |
31 | 1 | 0 | |
|
Sailing Hawks Over Animas Mtn La Plata County |
31 | 1 | 0 | |
|
G and M Mobile Home Park Rio Grande County |
30 | 11 | 0 | |
|
Calvary Boulder Valley Boulder County |
29 | 3 | 0 | |
|
Camp V Montrose County |
29 | 6 | 0 | |
|
Aspen Park Community Center Jefferson County |
27 | 3 | 0 | |
|
Echo Basin Ranch Montezuma County |
27 | 5 | 0 | |
|
Lake Fork Cove Alliance INC Gunnison County |
27 | 2 | 0 | |
|
Ranch at Coulter Creek HOA Garfield County |
27 | 10 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Nitrate, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Nitrate alone.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Colorado records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.