Windsor Town Of, CO
Lead detected, under the action levels
Latest 90th-percentile lead: 5.8 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
Windsor Town Of serves about 23,500 people through 9,418 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Weld County, Colorado. EPA system ID: CO0162843; phone on file: 970-303-1087. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
Against the period ending 2021 (5.3 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Windsor Town Of is 6.6 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 5.8 ppb |
| 2021 | 5.3 ppb |
| 2020 | 3.9 ppb |
| 2019 | 4.3 ppb |
| 2018 | 2.7 ppb |
| 2017 | 3.9 ppb |
| 2016 | 6.6 ppb |
Against other Colorado systems
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. Windsor Town Of's 5.8 ppb sits at the 94th percentile in Colorado and the 93rd nationally (higher means more lead).
Neighbouring systems
54 other systems share Weld County; 0 of them have a higher latest lead result than Windsor Town Of. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Greeley City Of | 132,310 | 4 ppb |
| Firestone Town Of | 27,798 | 3.6 ppb |
| Johnstown Town Of | 27,295 | 1 ppb |
| Evans City Of | 19,369 | 2.4 ppb |
| Frederick Town Of | 17,173 | 2.9 ppb |
| North Weld County Wd | 15,890 | 3.4 ppb |
| Ft Lupton City Of | 12,099 | 4 ppb |
| Severance Town Of | 11,733 | 2 ppb |
| Milliken Town Of | 9,200 | 0 (not detected) |
| Central Weld Cnty Wd | 7,662 | - |
What to do in your house
Test your own tap with a certified lab first-draw sample; Windsor, 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 Windsor 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. 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.