Colorado
Summit County drinking water quality
43 active public water systems serve 89,779 people in Summit County. 23 are compliant, 20 had at least one EPA violation in the past three years, 0 are designated serious violators, and 1 carries a health flag.
Needs attention
Community water systems
24 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Breckenridge Town of |
28,315 | 4 | 0 | |
|
Snake River WD |
9,900 | 2 | 0 | |
|
Silverthorne Town of |
8,400 | 2 | 0 | |
|
Copper Mountain Consolidated MD |
5,785 | 0 | 0 | |
|
Frisco Town of |
4,495 | 2 | 1 | |
|
Dillon Town of |
3,254 | 1 | 0 | |
|
Dillon Valley District |
3,063 | 2 | 0 | |
|
Buffalo Mountain MD |
2,650 | 0 | 0 | |
|
East Dillon WD |
2,501 | 3 | 0 | |
|
Keystone Ranch |
670 | 1 | 0 | |
|
Mesa Cortina Wsd |
466 | 0 | 0 | |
|
Timber Creek WD |
312 | 1 | 0 | |
|
Hamilton Creek MD |
200 | 2 | 0 | |
|
Swan Meadow Village |
200 | 0 | 0 | |
|
Swans Nest MD |
200 | 2 | 0 | |
|
Sage Creek Canyon Corp |
192 | 0 | 0 | |
|
Alpensee WD |
168 | 0 | 0 | |
|
Farmers Korner MHP |
159 | 0 | 0 | |
|
Blue River Valley Ranch Lakes |
150 | 0 | 0 | |
|
Heeney Water District |
150 | 0 | 0 | |
|
Willow Brook Metro District |
120 | 9 | 0 | |
|
Kingdom Park Court |
70 | 0 | 0 | |
|
Tanglewood WS |
60 | 1 | 1 | |
|
Wayside |
40 | 3 | 1 |
Non-community systems (19: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Cdot Vail Pass RA |
3,302 | 0 | 0 | |
|
Keystone Summit Lodge |
3,241 | 2 | 0 | |
|
Keystone Lodge IV |
2,268 | 0 | 0 | |
|
Aerie |
2,077 | 0 | 0 | |
|
Arapahoe Basin Ski Area |
1,149 | 0 | 0 | |
|
Keystone la Bontes Cabin |
972 | 0 | 0 | |
|
Breckenridge Ski Corp Peak 9 |
950 | 0 | 0 | |
|
Arapahoe Basin Ski Area Midway Lodge |
890 | 0 | 0 | |
|
Peak 8 Restaurant Vista Haus |
850 | 0 | 0 | |
|
Breckenridge Mountain Resort Peak 7 WS |
750 | 0 | 0 | |
|
Tiger Run HOA RV Park |
510 | 2 | 1 | |
|
Breckenridge Peak 6 Warming Hut |
500 | 0 | 0 | |
|
Peak One Pine Cove CG |
250 | 0 | 0 | |
|
Lowry CG Prospector CG |
225 | 1 | 1 | |
|
Peak 8 Village Condos |
127 | 0 | 0 | |
|
Good Times Adventure Tours |
100 | 0 | 0 | |
|
Agape Outpost Baptist Chapel |
34 | 3 | 0 | |
|
Quandry Condos Skiers Edge |
34 | 2 | 0 | |
|
Christ Lutheran Church School |
30 | 1 | 0 |
Inactive systems (68, 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.