Mesa Wsd, 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.
Mesa Wsd at a glance
Mesa Wsd serves about 330 people through 86 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Mesa County, Colorado. EPA system ID: CO0139505; phone on file: 970-261-2654. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
That is down 2.9 ppb from 6.4 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for Mesa Wsd is 6.4 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 3.5 ppb |
| 2021 | 6.4 ppb |
| 2020 | 3.9 ppb |
| 2019 | 4.9 ppb |
| 2018 | 2.9 ppb |
| 2017 | 2.6 ppb |
How Mesa Wsd 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. Mesa Wsd's 3.5 ppb sits at the 87th percentile in Colorado and the 85th nationally (higher means more lead).
Neighbouring systems
12 other systems share Mesa County; 2 of them have a higher latest lead result than Mesa Wsd. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Ute Wcd | 92,580 | 1.4 ppb |
| Clifton Wd | 34,500 | 2.2 ppb |
| Grand Junction City Of | 26,000 | 8.2 ppb |
| Palisade Town Of | 3,060 | 0.3 ppb |
| Debeque Town Of | 911 | 1.4 ppb |
| Midlands Village | 893 | 0 (not detected) |
| Candlewood Park | 800 | 0.8 ppb |
| Collbran Town Of | 678 | 0 (not detected) |
| Kannah Creek | 435 | 1.4 ppb |
| Gateway Canyons Ws | 370 | 3.7 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Mesa, 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 Mesa Wsd 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. The action level is dropping - the 10 ppb rule from 2027.