Windcliff Poa, CO
Lead detected, under the action levels
Latest 90th-percentile lead: 3.5 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.
Windcliff Poa at a glance
Windcliff Poa serves about 339 people through 146 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws surface water, in Larimer County, Colorado. EPA system ID: CO0135001; phone on file: 970-577-1402. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
That is up 1.4 ppb from 2.1 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for Windcliff Poa is 7.9 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 3.5 ppb |
| 2021 | 2.1 ppb |
| 2020 | 2.2 ppb |
| 2019 | 5.2 ppb |
| 2018 | 7.9 ppb |
| 2017 | 5.8 ppb |
How Windcliff Poa 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. Windcliff Poa's 3.5 ppb sits at the 87th percentile in Colorado and the 85th nationally (higher means more lead).
Other water systems in Larimer County
44 other systems share Larimer County; 10 of them have a higher latest lead result than Windcliff Poa. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Ft Collins City Of | 179,901 | 2.8 ppb |
| Loveland City Of | 91,077 | 3.3 ppb |
| Ft Collins Loveland Wd | 63,532 | 2 ppb |
| East Larimer County Wd | 27,944 | 3.9 ppb |
| Csu Main And West Housing Campus | 27,375 | 8 ppb |
| Little Thompson Wd | 25,654 | - |
| Estes Park Town Of | 16,722 | 1.4 ppb |
| Berthoud Town Of | 14,211 | 10 ppb |
| Wellington Town Of | 11,720 | 3.7 ppb |
| Northern Colorado Wa | 4,675 | 1 ppb |
Next steps for Estes Park, CO
Test your own tap with a certified lab first-draw sample; Estes Park, 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 Windcliff Poa 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. The action level is dropping - the 10 ppb rule from 2027.