Tapcensus

Colorado

Weld County drinking water quality

79 active public water systems serve 362,521 people in Weld County. 40 are compliant, 39 had at least one EPA violation in the past three years, 0 are designated serious violators, and 3 carry a health flag.

Active systems 79 58 community systems
People served 363K by public water systems
Systems with violations 39 49% of active systems, past 3 years
Serious violators 0 3 systems carry a health flag

Needs attention

Meadow Village Mobile Home Park CO0162505 · Community water system · Serves 150 5 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Crow Valley Campground CO0362001 · Transient non-community system · Serves 57 2 rules violated in the past three years. Unresolved: Ground Water Rule.
Opal Foods LLC Hudson Farm CO0262508 · Non-Transient non-community system · Serves 49 2 rules violated in the past three years. Unresolved: Ground Water Rule and Public Notice Rule and Revised PN Rule.

Community water systems

58 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
Greeley City of
 132,310 2 0
Firestone Town of
 27,798 0 0
Johnstown Town of
 27,295 1 0
Windsor Town of
 23,500 0 0
Evans City of
 19,369 2 0
Frederick Town of
 17,173 2 2
North Weld County WD
 15,890 0 0
FT Lupton City of
 12,099 3 1
Severance Town of
 11,733 2 0
Milliken Town of
 9,200 2 0
Central Weld Cnty WD
 7,662 0 0
Eaton Town of
 7,328 3 0
Dacono City of
 6,900 1 0
Lochbuie Town of
 6,518 0 0
Keenesburg Town of
 4,650 0 0
Ault Town of
 4,220 2 0
Hudson Town of
 3,350 2 1
Platteville Town of
 2,900 0 0
Kersey WD
 2,101 1 0
LA Salle Town of
 2,010 4 1
Aristocrat Ranchette Water Project
 1,715 3 1
Gilcrest Town of
 1,150 0 0
Pierce Town of
 1,094 0 0
Stoneybrook MHP
 1,073 0 0
Cave Creek
Evans 		1,025 0 0
Longview MHP
 1,000 3 0
Villa West
 833 0 0
River Valley MHC
 803 0 0
McDonald Farms Enterprises INC
 772 0 0
Friendly Village of Greeley MHP
 660 1 0
Prairie Greens MHP
 654 4 0
Nunn Town of
 499 0 0
Eagle Crest MHP
 441 0 0
Countryside of Greeley
 435 2 0
Stoneybrook Pointe
 355 5 0
Wattenberg Improvement Assoc
 350 1 0
Woodlands East
 350 0 0
Briggsdale WC
 303 1 0
Country Estates Mobile Home Park
 297 0 0
Terrace Park MHP
 297 2 0
Copper Key Village MHP
 260 0 0
New Vision MHP
 200 3 1
Greeley Mobile Manor
 180 0 0
Green Acres Mobile Home Park
 180 0 0
Greeley RV Park
 164 0 0
Willow Crossing MHP
Fort Lupton (lupton) 		159 0 0
Serenity Ridge Vault Connection
Berthoud 		157 0 0
Stewarts Mobile Home Park
 156 0 0
Grover Town of
 154 1 0
Meadow Village Mobile Home Park
 150 5 1
Non-community systems (21: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Prairie Elem at New Raymer
 275 2 0
Tagawa Greenhouses INC
 250 1 0
Briggsdale School
 194 1 0
Salt & Acres
 158 3 0
Peak Oilfield Services LLC
 150 3 1
Greeley RV Park South
 126 0 0
Cardinal Community Academy
 120 0 0
Mountain States Jatc Training Facility
 100 0 0
Wild Animal Sanctuary the
 97 0 0
Crow Valley Campground
 57 2 1
RM INC
 52 0 0
Stoneham Village
 51 2 0
Opal Foods LLC Hudson Farm
 49 2 2
Redtail Gas Plant
 48 0 0
Fourway Baptist Church
 45 0 0
Rocky Mountain Energy Center
 39 0 0
Great Guns Sporting
 33 2 1
Ceesi
 30 1 1
Shortgrass Steppe Campus
 30 1 0
Opal Foods LLC Roggen Farm
 27 0 0
Roggen Motel
 27 0 0
Inactive systems (93, no longer operating or reporting)

Kept for the record and excluded from the county totals above. Browse inactive systems.

About this data

Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.

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. Retrieved from ECHO on Oct 11, 2026.