Water quality for ZIP code 80435
ZIP 80435 covers Keystone, Dillon, Montezuma, and Silverthorne in Summit County, Colorado, one of 4 ZIP codes in the county. 43 active public water systems serve the county; 20 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Summit County
23 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Keystone Ranch |
670 | 1 | 3.1 mi | |
| East Dillon WD |
2,501 | 3 | 4.0 mi | |
| Swans Nest MD |
200 | 2 | 6.0 mi | |
| Wayside |
40 | 3 | 6.2 mi | |
| Dillon Town of |
3,254 | 1 | 6.3 mi | |
| Farmers Korner MHP |
159 | 0 | 6.4 mi | |
| Dillon Valley District |
3,063 | 2 | 7.1 mi | |
| Breckenridge Town of |
28,315 | 4 | 8.1 mi | |
| Buffalo Mountain MD |
2,650 | 0 | 8.2 mi | |
| Tanglewood WS |
60 | 1 | 8.4 mi | |
| Frisco Town of |
4,495 | 2 | 8.6 mi | |
| Silverthorne Town of |
8,400 | 2 | 9.1 mi | |
| Blue River Valley Ranch Lakes |
150 | 0 | 9.2 mi | |
| Mesa Cortina Wsd |
466 | 0 | 9.3 mi | |
| Copper Mountain Consolidated MD |
5,785 | 0 | 12.7 mi | |
| Timber Creek WD |
312 | 1 | 13.0 mi | |
| Heeney Water District |
150 | 0 | 28.7 mi | |
| Hamilton Creek MD |
200 | 2 | — | |
| Swan Meadow Village |
200 | 0 | — | |
| Sage Creek Canyon Corp |
192 | 0 | — | |
| Alpensee WD |
168 | 0 | — | |
| Willow Brook Metro District |
120 | 9 | — | |
| Kingdom Park Court |
70 | 0 | — |
Non-community systems in Summit County (19: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Good Times Adventure Tours |
100 | 0 | 0 | |
|
Tiger Run HOA RV Park |
510 | 2 | 1 | |
|
Agape Outpost Baptist Chapel |
34 | 3 | 0 | |
|
Christ Lutheran Church School |
30 | 1 | 0 | |
|
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 | |
|
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 | |
|
Quandry Condos Skiers Edge |
34 | 2 | 0 |
About this data
Water systems are matched to Summit County, the county this ZIP code lies in, nearest to the ZIP code's centre first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA files.
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.