Columbine Lake Wsd, CO
Lead detected, under the action levels
Latest 90th-percentile lead: 4.3 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.
About Columbine Lake Wsd
Columbine Lake Wsd serves about 428 people through 463 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 groundwater, in Grand County, Colorado. EPA system ID: CO0125155; phone on file: 303-265-7949. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Columbine Lake Wsd's lead record
That is up 3.1 ppb from 1.2 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for Columbine Lake Wsd is 9.8 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 4.3 ppb |
| 2021 | 1.2 ppb |
| 2020 | 3.7 ppb |
| 2019 | 2.6 ppb |
| 2018 | 1.1 ppb |
| 2017 | 1.9 ppb |
| 2016 | 9.8 ppb |
How Columbine Lake Wsd 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. Columbine Lake Wsd's 4.3 ppb sits at the 92nd percentile in Colorado and the 89th nationally (higher means more lead).
Neighbouring systems
23 other systems share Grand County; 2 of them have a higher latest lead result than Columbine Lake Wsd. 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) |
Next steps for Grand Lake, CO
Test your own tap with a certified lab first-draw sample; Grand Lake, 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 Columbine Lake Wsd 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. Why sampled homes are the worst-case ones is in the guide to reading the number. Systems that went over once often dip back under; here is what that means.