Tap Truth EPA drinking water records, in plain English

County drinking water records

Jefferson County, CO drinking water systems

40 community water systems serve Jefferson County, CO, reporting 771,451 people served in all. A system that also serves other counties counts all of its customers here.

11 of them (28%) had at least one health-based violation in the last 10 years. 1 system still has one unresolved.

6 rely mainly on groundwater and 34 on surface water, counting water bought from other systems.

24 systems filed a lead service line inventory listing 2 lead lines, 46 galvanized lines that must be replaced and 2,634 lines of unknown material.

10 more systems are placed in Jefferson County, CO by the county their records name because they have no service area map that lines up with their own records, so they are listed apart and not counted here.

Community water systems
40
People served, sum of each system's own figure
771,451
Systems with a health-based violation, last 10 years
11
Systems with one unresolved
1
Lead service lines in inventories
2

Water systems serving Jefferson County

40 systems

People served is each system's own figure for its whole service area. Violation counts cover the last 10 years of EPA records.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
City of Westminster Westminster and Shaw Heights 202,078 Surface water 0 0 0
City of Arvada Arvada 171,610 Surface water 0 0 0
Consolidated Mutual Maple Grove Lakewood, Wheat Ridge and 1 more 81,400 Surface water 0 0 0
Green Mountain WSD Lakewood 49,400 Purchased surface water 1 0 No inventory
Bancroft Clover WSD Lakewood 44,000 Purchased surface water 0 0 No inventory
City of Golden Golden 38,288 Surface water 0 0 2
Bear Creek WSD Lakewood 30,000 Purchased surface water 0 0 No inventory
Wheat Ridge Water District Wheat Ridge and Mountain View 20,000 Purchased surface water 1 0 No inventory
Platte Canyon WSD Columbine and Littleton 19,485 Purchased surface water 0 0 No inventory
Evergreen MD Upper Bear Creek and Evergreen 15,750 Surface water 0 0 0
Ken Caryl WSD Ken Caryl 12,000 Purchased surface water 0 0 No inventory
Lakehurst WSD Dakota Ridge 12,000 Purchased surface water 0 0 No inventory
North Table Mountain WSD Fairmount and Golden 10,000 Surface water 0 0 0
Valley WD Wheat Ridge 10,000 Purchased surface water 0 0 No inventory
Town of Morrison Morrison 9,887 Surface water 0 0 0
Willowbrook WSD Dakota Ridge and land outside it 9,348 Purchased surface water 0 0 No inventory
City of Lakewood Edgewater and Lakewood 6,000 Purchased surface water 0 0 No inventory
City of Edgewater Lakewood 5,300 Purchased surface water 0 0 No inventory
High View WD Lakewood 4,000 Purchased surface water 0 0 No inventory
Genesee WSD Genesee 3,920 Surface water 0 0 0
Meadowbrook WD Ken Caryl and Columbine 3,290 Purchased surface water 0 0 No inventory
Alameda WSD Lakewood 2,480 Purchased surface water 0 0 No inventory
Mountain WSD Outside cities and towns 1,941 Groundwater under direct influence 1 0 0
Ralston Valley WSD Outside cities and towns 1,610 Purchased surface water 0 0 0
Indian Hills WD Indian Hills 1,300 Groundwater under direct influence 6 0 0
Homestead WC Outside cities and towns 1,000 Surface water 17 0 0
Brook Forest WD Brook Forest 998 Groundwater 0 1 0
Bow Mar WSD Bow Mar 899 Purchased surface water 0 0 No inventory
Mt Vernon Country Club Outside cities and towns 734 Groundwater under direct influence 7 0 0
Mountainside Estates MHP Lakewood 473 Purchased surface water 1 0 0
Forest Hills MD Riva Chase Genesee 400 Groundwater 0 0 0
Blue Mountain WD Outside cities and towns 350 Groundwater 0 0 0
Idledale WSD Idledale 350 Groundwater under direct influence 1 0 0
Bonvue Water and Sanitation District Lakewood 350 Purchased surface water 0 0 No inventory
Inspiration Valley MHP Outside cities and towns 250 Groundwater 0 0 0
Hidden Valley Water District Outside cities and towns 155 Purchased surface water 3 0 0
Ken Caryl West Ranch WD Outside cities and towns 140 Groundwater 0 0 0
Buffalo Creek WD Outside cities and towns 125 Surface water 3 0 0
Park WC Wonderview Outside cities and towns 90 Groundwater 0 0 0
Cragmont WC Outside cities and towns 50 Surface water 4 0 0

Systems placed by county record in Jefferson County

10 systems

EPA has no service area map for some of these systems, and the maps it has for the others do not line up with their own records. They are placed by the county their records name (the counties EPA lists them serving, or the county coded in their IDs where EPA lists none), and without a map they are not counted in the figures above.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
South Sheridan Water and Sewer Dist County on record 2,500 Purchased surface water 1 0 No inventory
North Lincoln WSD County on record 1,000 Purchased surface water 1 0 No inventory
Golden Terrace West County on record 825 Purchased surface water 1 0 0
Golden Terrace Village County on record 580 Purchased surface water 1 0 0
Sheridan MHP County on record 480 Groundwater 0 0 0
Golden Terrace South County on record 425 Purchased surface water 1 0 0
Elevado Estates LLC County on record 250 Groundwater 0 0 0
Majestic MHP County on record 232 Purchased surface water 0 0 0
Ridgewood Mobile Home Park County on record 196 Purchased surface water 0 0 No inventory
Pleasant View Estates County on record 122 Purchased surface water 0 2 0

Cities and towns in Jefferson County

17 places

Back to Colorado

Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations