May Valley Wa, CO
Lead detected, under the action levels
Latest 90th-percentile lead: 2 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.
May Valley Wa at a glance
May Valley Wa serves about 1,500 people through 629 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in Prowers County, Colorado. EPA system ID: CO0150800; phone on file: 719-931-1501. 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 down 6 ppb from 8 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for May Valley Wa is 8 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 2 ppb |
| 2021 | 8 ppb |
| 2020 | 4 ppb |
| 2019 | 1 ppb |
| 2018 | 4 ppb |
| 2016 | 2 ppb |
How May Valley Wa 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. May Valley Wa's 2 ppb sits at the 73rd percentile in Colorado and the 72nd nationally (higher means more lead).
Other water systems in Prowers County
9 other systems share Prowers County; 2 of them have a higher latest lead result than May Valley Wa. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Lamar City Of | 7,500 | 4 ppb |
| Holly Town Of | 800 | 0 (not detected) |
| Granada Town Of | 515 | 4 ppb |
| Wiley Town Of | 405 | 2 ppb |
| Granada Rural Water Authority | 378 | 0 (not detected) |
| Prosperity Lane Wa | 260 | 0 (not detected) |
| Bristol Wsd | 151 | 0 (not detected) |
| A And B Wa Inc | 100 | 0 (not detected) |
| Hartman Town Of | 61 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Wiley, 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 May Valley Wa 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. The lead result guide covers how utilities pick the homes they sample. Systems that went over once often dip back under; here is what that means.