Holly Town Of, CO
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
Who runs the water here
Holly Town Of serves about 800 people through 443 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 groundwater, in Prowers County, Colorado. EPA system ID: CO0150600; phone on file: 719-537-6622. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
That is down 1.8 ppb from 1.8 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for Holly Town Of is 5.4 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2021 | 1.8 ppb |
| 2020 | 1.2 ppb |
| 2019 | 5.4 ppb |
| 2018 | 1.7 ppb |
| 2017 | 1.8 ppb |
| 2016 | 3.6 ppb |
Where this result ranks
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. Holly Town Of's reported as 0 (not detected) sits at the 26th percentile in Colorado and the 25th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Prowers County
9 other systems share Prowers County; 4 of them have a higher latest lead result than Holly Town Of. 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 |
| May Valley Wa | 1,500 | 2 ppb |
| 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) |
Next steps for Holly, CO
Look up your address in Holly Town Of's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Holly Town Of 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. Small systems behave differently: why small systems go over more often.