Bone Mesa Domestic Wd, 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 Bone Mesa Domestic Wd
Bone Mesa Domestic Wd serves about 400 people through 165 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 Delta County, Colorado. EPA system ID: CO0115152; phone on file: 970-822-3083. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
Against the period ending 2025 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Bone Mesa Domestic Wd is 71.4 ppb across 17 monitoring periods, 2 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2025 | 2 ppb |
| 2024 | 0 (not detected) |
| 2024 | 2 ppb |
| 2023 | 1.8 ppb |
| 2023 | 1.2 ppb |
| 2022 | 1.3 ppb |
| 2022 | 1.4 ppb |
| 2021 | 1 ppb |
| 2021 | 4.3 ppb |
| 2020 | 16 ppb over 15 |
| 2020 | 3.3 ppb |
| 2019 | 3.7 ppb |
| 2019 | 2.5 ppb |
| 2018 | 71.4 ppb over 15 |
| 2017 | 3.5 ppb |
How Bone Mesa Domestic Wd 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. Bone Mesa Domestic Wd's reported as 0 (not detected) sits at the 20th percentile in Colorado and the 21st nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Delta County
29 other systems share Delta County; 20 of them have a higher latest lead result than Bone Mesa Domestic Wd. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Delta City Of | 8,700 | - |
| Orchard City Town Of | 3,100 | 7 ppb |
| Upper Surface Creek Domestic Wua | 2,800 | 3 ppb |
| Paonia Town Of | 2,499 | 1.2 ppb |
| Cedaredge Town Of | 2,400 | 2 ppb |
| Hotchkiss Town Of | 2,050 | 0.8 ppb |
| Rogers Mesa Wc | 840 | 0 (not detected) |
| Crawford Mesa Wa | 486 | 8.4 ppb |
| Crawford Town Of | 477 | 1 ppb |
| Pitkin Mesa Pipeline Co | 295 | 2.5 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Paonia, 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 Bone Mesa Domestic Wd 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. Why an old exceedance still matters: over the limit before, under it now.