Eureka Wc, CO
Exceeded the action level in the past
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2026-2026). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
About Eureka Wc
Eureka Wc serves about 498 people through 147 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Otero County, Colorado. EPA system ID: CO0145150; phone on file: 719-469-2987. 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 2026 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Eureka Wc is 27.5 ppb across 11 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2026 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2025 | 27.5 ppb over 15 |
| 2025 | 0 (not detected) |
| 2021 | 4 ppb |
| 2020 | 3 ppb |
| 2019 | 2.5 ppb |
| 2018 | 7.5 ppb |
| 2017 | 8.5 ppb |
| 2016 | 3.5 ppb |
How Eureka Wc 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. Eureka Wc's reported as 0 (not detected) sits at the 22nd percentile in Colorado and the 22nd nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
22 other systems share Otero County; 11 of them have a higher latest lead result than Eureka Wc. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| La Junta City Of | 8,320 | 1 ppb |
| Rocky Ford City Of | 4,443 | 0 (not detected) |
| Fowler Town Of | 1,169 | 0 (not detected) |
| Bents Fort Wc | 900 | 0.6 ppb |
| Swink Town Of | 660 | 2 ppb |
| South Swink Water Authority | 622 | 3 ppb |
| Manzanola Town Of | 497 | 0 (not detected) |
| Newdale Grand Valley Wc | 458 | 0 (not detected) |
| Hilltop Wc | 285 | 1.5 ppb |
| Valley Wc | 270 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Rocky Ford, 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 Eureka 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. Why an old exceedance still matters: over the limit before, under it now.