Colorado Water Quality
Tap water quality data for 14 cities and their water systems
All 14 Cities
Sorted by population served
Denver
Utility serves 1.3M
Hardness368 ppm
LeadBelow limit
Violations6 (3yr)
Aurora City of
Utility serves 487K
Hardness255 ppm
LeadBelow limit
ViolationsNone
Colorado Springs
Utility serves 469K
Hardness167 ppm
LeadBelow limit
Violations6 (3yr)
Thornton City of
Utility serves 226K
Hardness336 ppm
LeadBelow limit
Violations12 (3yr)
Westminster City of
Utility serves 202K
Hardness336 ppm
LeadBelow limit
Violations8 (3yr)
Ft Collins City of
Utility serves 180K
Hardness22.7 ppm
LeadBelow limit
Violations6 (3yr)
Boulder City of
Utility serves 166K
Hardness48 ppm
LeadBelow limit
Violations3 (3yr)
Arvada City of
Utility serves 147K
Hardness188 ppm
LeadBelow limit
Violations14 (3yr)
Greeley City of
Utility serves 132K
Hardness431 ppm
LeadBelow limit
Violations3 (3yr)
Pueblo Board of Ww
Utility serves 114K
Hardness320 ppm
LeadBelow limit
ViolationsNone
Castle Rock Town of
Utility serves 107K
Hardness136 ppm
LeadBelow limit
Violations4 (3yr)
Broomfield
Utility serves 106K
Hardness336 ppm
LeadBelow limit
Violations3 (3yr)
Highlands Ranch Wsd
Utility serves 103K
Hardness136 ppm
LeadBelow limit
ViolationsNone
Longmont City of
Utility serves 103K
Hardness48 ppm
LeadBelow limit
ViolationsNone