Hamilton Creek Md, CO
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2023-2025). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
Who runs the water here
Hamilton Creek Md serves about 200 people through 104 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Summit County, Colorado. EPA system ID: CO0159063; phone on file: 970-468-6875. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
Against the period ending 2021 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Hamilton Creek Md is 0 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2018 | 0 (not detected) |
| 2017 | 0 (not detected) |
Where this result ranks
Of the 1,025 Colorado systems with a lead result, the median latest reading is 1 ppb; 2 are over 15 ppb right now and 71 have gone over at some point. Hamilton Creek Md's reported as 0 (not detected) sits at the 13th percentile in Colorado and the 15th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
22 other systems share Summit County; 21 of them have a higher latest lead result than Hamilton Creek Md. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Breckenridge Town Of | 28,315 | 2 ppb |
| Snake River Wd | 9,900 | 0.9 ppb |
| Silverthorne Town Of | 8,400 | 0 (not detected) |
| Copper Mountain Consolidated Md | 5,785 | 5 ppb |
| Frisco Town Of | 4,495 | 4 ppb |
| Dillon Town Of | 3,254 | 5 ppb |
| Dillon Valley District | 3,063 | 3 ppb |
| Buffalo Mountain Md | 2,650 | 1 ppb |
| East Dillon Wd | 2,501 | 4.2 ppb |
| Keystone Ranch | 670 | 6 ppb |
Your move
Look up your address in Hamilton Creek Md's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Hamilton Creek Md whether it covers that cost before hiring anyone - many utilities now do.
These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. What a 90th-percentile result does and does not tell you: how to read a lead result. Small systems behave differently: why small systems go over more often.