Granby Jones Mhp, CO
Lead detected, under the action levels
Latest 90th-percentile lead: 4 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.
Who runs the water here
Granby Jones Mhp serves about 201 people through 89 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Grand County, Colorado. EPA system ID: CO0125320; phone on file: 303-916-9907. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
That is up 4 ppb from 0 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for Granby Jones Mhp is 6.3 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 4 ppb |
| 2021 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2019 | 0.5 ppb |
| 2018 | 6.3 ppb |
| 2017 | 0.8 ppb |
How Granby Jones Mhp 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. Granby Jones Mhp's 4 ppb sits at the 89th percentile in Colorado and the 87th nationally (higher means more lead).
Other water systems in Grand County
23 other systems share Grand County; 3 of them have a higher latest lead result than Granby Jones Mhp. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Winter Park Wsd | 6,635 | 3 ppb |
| Grand County Water No 1 | 5,400 | 1 ppb |
| Winter Park Ranch Wsd | 3,250 | 2 ppb |
| Granby Town Of South Service Area | 2,300 | 2 ppb |
| Fraser Town Of | 2,150 | 6.8 ppb |
| Grand Lake Town Of | 2,035 | 1.8 ppb |
| Granby Town Of North Service Area | 2,025 | 8 ppb |
| Kremmling Town Of | 1,859 | 0 (not detected) |
| Hot Sulphur Springs Town Of | 687 | 2 ppb |
| Ymca Snow Mtn Ranch | 578 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Golden, 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 Granby Jones Mhp 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. The action level is dropping - the 10 ppb rule from 2027.