Antelope Hills Assoc, CO
Lead detected, under the action levels
Latest 90th-percentile lead: 1 ppb (monitoring period 2025-2025). 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.
About Antelope Hills Assoc
Antelope Hills Assoc serves about 265 people through 107 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws surface water, in Gunnison County, Colorado. EPA system ID: CO0126117; phone on file: 970-641-2925. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Antelope Hills Assoc's lead record
Against the period ending 2024 (2 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Antelope Hills Assoc is 7.5 ppb across 9 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1 ppb |
| 2024 | 2 ppb |
| 2023 | 1 ppb |
| 2022 | 4 ppb |
| 2021 | 0.2 ppb |
| 2020 | 0.9 ppb |
| 2019 | 0 (not detected) |
| 2018 | 0.8 ppb |
| 2017 | 7.5 ppb |
Against other Colorado systems
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. Antelope Hills Assoc's 1 ppb sits at the 50th percentile in Colorado and the 52nd nationally (higher means more lead).
Nearby utilities
19 other systems share Gunnison County; 9 of them have a higher latest lead result than Antelope Hills Assoc. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Gunnison City Of | 9,610 | 3 ppb |
| Mount Crested Butte Wsd | 3,296 | 1 ppb |
| Crested Butte Town Of | 2,440 | 6 ppb |
| Crested Butte South | 2,000 | 0 (not detected) |
| Gunnison County Wsd | 800 | 1.6 ppb |
| Evergreen Lake Company | 431 | 2 ppb |
| Riverland Lot Owners Assoc | 368 | 0.5 ppb |
| Skyland Md | 335 | 2 ppb |
| Meridian Lake Park | 250 | 3 ppb |
| Buckhorn Ranch Ws | 205 | 0.5 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Gunnison, 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 Antelope Hills Assoc 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. Size matters more than most people expect: small vs large water systems.