Mountain View Wua, CO
Lead detected, under the action levels
Latest 90th-percentile lead: 9.6 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
Mountain View Wua serves about 320 people through 125 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: CO0101100; phone on file: 720-201-2325. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Mountain View Wua's lead record
That is up 6.6 ppb from 3 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Mountain View Wua is 9.6 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 9.6 ppb |
| 2022 | 3 ppb |
| 2021 | 6 ppb |
| 2020 | 2 ppb |
| 2019 | 4 ppb |
| 2018 | 3 ppb |
| 2017 | 1.5 ppb |
How Mountain View Wua 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. Mountain View Wua's 9.6 ppb sits at the 99th percentile in Colorado and the 97th nationally (higher means more lead).
Other water systems in Adams County
62 other systems share Adams County; 0 of them have a higher latest lead result than Mountain View 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 |
What to do in your house
Test your own tap with a certified lab first-draw sample; Brighton, 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 Mountain View 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. Why sampled homes are the worst-case ones is in the guide to reading the number. Systems that went over once often dip back under; here is what that means.