High Plains Wua, CO
Lead detected, under the action levels
Latest 90th-percentile lead: 0.5 ppb (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. 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
High Plains Wua serves about 200 people through 97 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Adams County, Colorado. EPA system ID: CO0101080; phone on file: 720-872-2941. Call that number and ask whether your address has a lead, galvanized or unknown service line.
High Plains Wua's lead record
Against the period ending 2021 (0.5 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for High Plains Wua is 4 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0.5 ppb |
| 2021 | 0.5 ppb |
| 2020 | 0 (not detected) |
| 2019 | 4 ppb |
| 2018 | 3 ppb |
| 2017 | 2 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. High Plains Wua's 0.5 ppb sits at the 41st percentile in Colorado and the 43rd nationally (higher means more lead).
Neighbouring systems
62 other systems share Adams County; 29 of them have a higher latest lead result than High Plains Wua. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Thornton City Of | 226,465 | 2.3 ppb |
| Westminster City Of | 202,078 | 1.3 ppb |
| South Adams County Wsd | 75,559 | 0 (not detected) |
| Brighton City Of | 56,304 | 2 ppb |
| Northglenn City Of | 48,927 | 1.7 ppb |
| Crestview Wsd | 23,756 | - |
| North Washington Street Wsd | 14,500 | - |
| Federal Heights City Of | 11,678 | 1.7 ppb |
| Todd Creek Village Md | 7,363 | 0.8 ppb |
| Bennett Town Of | 4,400 | 1 ppb |
Next steps for Eastlake, CO
Test your own tap with a certified lab first-draw sample; Eastlake, 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 High Plains Wua 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. Systems that went over once often dip back under; here is what that means.