La Plata Archuleta Water District, CO
Above the new 10 ppb level coming in 2027
Latest 90th-percentile lead: 10.5 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. Under the current 15 ppb rule this is not an exceedance, but it is above the 10 ppb action level that takes over in Nov 2027. Test your own tap; filter if your result shows lead.
Who runs the water here
La Plata Archuleta Water District serves about 510 people through 205 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in La Plata County, Colorado. EPA system ID: CO0134191; phone on file: 970-563-0320. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
That is up 3.2 ppb from 7.3 ppb in the period ending 2024. The highest 90th-percentile result EPA holds for La Plata Archuleta Water District is 11.3 ppb across 15 monitoring periods, none of them over 15 ppb (4 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 10.5 ppb over 10 |
| 2024 | 7.3 ppb |
| 2023 | 5.5 ppb |
| 2022 | 11.3 ppb over 10 |
| 2021 | 3.5 ppb |
| 2020 | 8.1 ppb |
| 2020 | 7.1 ppb |
| 2019 | 10 ppb |
| 2019 | 7.1 ppb |
| 2018 | 3.3 ppb |
| 2018 | 6.6 ppb |
| 2017 | 10.4 ppb over 10 |
| 2017 | 8.1 ppb |
| 2016 | 8 ppb |
| 2016 | 10.5 ppb over 10 |
How La Plata Archuleta Water District 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. La Plata Archuleta Water District's 10.5 ppb sits at the 99th percentile in Colorado and the 97th nationally (higher means more lead).
Neighbouring systems
52 other systems share La Plata County; 0 of them have a higher latest lead result than La Plata Archuleta Water District. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Durango City Of | 33,787 | 3.1 ppb |
| Animas Wc | 3,096 | 8.8 ppb |
| Bayfield Town Of | 2,300 | 2.7 ppb |
| Forest Lakes Md | 1,699 | 1.7 ppb |
| Lake Durango Wa | 1,577 | 0.7 ppb |
| Purgatory Md | 1,364 | 2 ppb |
| Edgemont Ranch Md | 1,200 | 1.5 ppb |
| Durango West Md No 2 | 930 | 2 ppb |
| Ignacio Town Of | 800 | 0.8 ppb |
| Durango West Md No 1 | 750 | 1 ppb |
Next steps for Ignacio, CO
Test your own tap with a certified lab first-draw sample; Ignacio, 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 La Plata Archuleta Water District 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. See what changes at 10 ppb in 2027.