Eleven Mile Ranch Association, CO
Lead detected, under the action levels
Latest 90th-percentile lead: 2.5 ppb (monitoring period 2026-2026). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
Who runs the water here
Eleven Mile Ranch Association serves about 72 people through 72 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws surface water, in Park County, Colorado. EPA system ID: CO0247017; phone on file: 303-499-6663. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
That is down 2 ppb from 4.5 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Eleven Mile Ranch Association is 4.5 ppb across 8 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 2.5 ppb |
| 2025 | 4.5 ppb |
| 2024 | 1 ppb |
| 2023 | 2 ppb |
| 2023 | 2.5 ppb |
| 2022 | 2.5 ppb |
| 2022 | 3 ppb |
| 2021 | 3.5 ppb |
How Eleven Mile Ranch Association compares
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. Eleven Mile Ranch Association's 2.5 ppb sits at the 79th percentile in Colorado and the 77th nationally (higher means more lead).
Nearby utilities
9 other systems share Park County; 2 of them have a higher latest lead result than Eleven Mile Ranch Association. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Fairplay Town Of | 909 | 1 ppb |
| Bailey Wsd | 483 | 0 (not detected) |
| Alma Town Of | 460 | 2 ppb |
| Redhill Forest Pomwaca | 388 | 0 (not detected) |
| Will O Wisp Metro District | 300 | 5.5 ppb |
| Spruce Hill Development | 277 | 2 ppb |
| Warm Springs Owners Mutual Wa | 250 | 9.5 ppb |
| River-Dale Ranch | 83 | 0 (not detected) |
| Shawnee Wca | 50 | 0 (not detected) |
Next steps for Lake George, CO
Test your own tap with a certified lab first-draw sample; Lake George, CO may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Eleven Mile Ranch Association whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 2470 ppb (copper action level 1,300 ppb).
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. Why sampled homes are the worst-case ones is in the guide to reading the number. Size matters more than most people expect: small vs large water systems.