Granada Rural Water Authority, CO
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2025-2025). 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.
Granada Rural Water Authority at a glance
Granada Rural Water Authority serves about 378 people through 150 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Prowers County, Colorado. EPA system ID: CO0150400; phone on file: 719-336-7612. They can tell you what your service line is made of and whether they pay to replace it.
Granada Rural Water Authority's lead record
That is down 2 ppb from 2 ppb in the period ending 2024. The highest 90th-percentile result EPA holds for Granada Rural Water Authority is 3 ppb across 8 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2024 | 2 ppb |
| 2024 | 3 ppb |
| 2021 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2019 | 2 ppb |
| 2018 | 2.5 ppb |
| 2017 | 1.8 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. Granada Rural Water Authority's reported as 0 (not detected) sits at the 20th percentile in Colorado and the 20th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
9 other systems share Prowers County; 4 of them have a higher latest lead result than Granada Rural Water Authority. 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 |
| Holly Town Of | 800 | 0 (not detected) |
| Granada Town Of | 515 | 4 ppb |
| Wiley Town Of | 405 | 2 ppb |
| 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 Lamar, CO
Look up your address in Granada Rural Water Authority'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 Granada Rural Water Authority 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.