Olde Stage Wd, CO
Lead detected, under the action levels
Latest 90th-percentile lead: 2 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
Olde Stage Wd serves about 250 people through 100 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 Boulder County, Colorado. EPA system ID: CO0107582; phone on file: 720-201-6420. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Olde Stage Wd's lead record
Against the period ending 2021 (2.5 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Olde Stage Wd is 4.5 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 2 ppb |
| 2021 | 2.5 ppb |
| 2020 | 0.5 ppb |
| 2019 | 4.5 ppb |
| 2018 | 1.5 ppb |
| 2017 | 2 ppb |
How Olde Stage 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. Olde Stage Wd's 2 ppb sits at the 69th percentile in Colorado and the 71st nationally (higher means more lead).
Other water systems in Boulder County
39 other systems share Boulder County; 5 of them have a higher latest lead result than Olde Stage Wd. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Boulder City Of | 166,080 | 2 ppb |
| Longmont City Of | 104,178 | 1.6 ppb |
| Erie Town Of | 47,444 | 2.6 ppb |
| Lafayette City Of | 28,700 | 2 ppb |
| Louisville City Of | 20,975 | 0 (not detected) |
| Left Hand Wd | 20,280 | 1 ppb |
| Superior Md No 1 | 17,900 | 0 (not detected) |
| Longs Peak Wd | 3,200 | 2 ppb |
| Lyons Town Of | 2,990 | 0 (not detected) |
| Nederland Town Of | 2,406 | 1 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Wheat Ridge, 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 Olde Stage 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. 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.