Alpine Lakes Ranch Wc, CO
Lead detected, under the action levels
Latest 90th-percentile lead: 1.2 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 Alpine Lakes Ranch Wc
Alpine Lakes Ranch Wc serves about 158 people through 147 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws surface water, in Archuleta County, Colorado. EPA system ID: CO0104090; phone on file: 972-672-5192. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
Against the period ending 2025 (1.6 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Alpine Lakes Ranch Wc is 3.7 ppb across 15 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.2 ppb |
| 2025 | 1.6 ppb |
| 2024 | 1.3 ppb |
| 2023 | 0.7 ppb |
| 2023 | 3.7 ppb |
| 2022 | 0.7 ppb |
| 2022 | 1.3 ppb |
| 2021 | 1.1 ppb |
| 2021 | 2.8 ppb |
| 2021 | 2.8 ppb |
| 2020 | 2.2 ppb |
| 2019 | 2.1 ppb |
| 2018 | 2.2 ppb |
| 2017 | 2 ppb |
| 2016 | 2.2 ppb |
Where this result ranks
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. Alpine Lakes Ranch Wc's 1.2 ppb sits at the 58th percentile in Colorado and the 58th nationally (higher means more lead).
Nearby utilities
6 other systems share Archuleta County; 3 of them have a higher latest lead result than Alpine Lakes Ranch Wc. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Pagosa Area Wsd | 11,069 | 2.4 ppb |
| San Juan River Village Md | 877 | 3 ppb |
| Piedra Park Md | 850 | 3 ppb |
| Aspen Springs Md | 290 | - |
| Crowley Ranch Reserve | 49 | 0.3 ppb |
| Navajo River Ranch Poa | 40 | 0.9 ppb |
Next steps for Pagosa Springs, CO
Test your own tap with a certified lab first-draw sample; Pagosa Springs, 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 Alpine Lakes Ranch Wc 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.