North Weld County Wd, CO
Lead detected, under the action levels
Latest 90th-percentile lead: 3.4 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.
About North Weld County Wd
North Weld County Wd serves about 15,890 people through 6,356 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: CO0162553; phone on file: 970-301-2806. Call that number and ask whether your address has a lead, galvanized or unknown service line.
North Weld County Wd's lead record
Against the period ending 2021 (2.7 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for North Weld County Wd is 3.8 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 3.4 ppb |
| 2021 | 2.7 ppb |
| 2020 | 2.4 ppb |
| 2019 | 3.8 ppb |
| 2018 | 2.9 ppb |
| 2017 | 0 (not detected) |
How North Weld County 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. North Weld County Wd's 3.4 ppb sits at the 86th percentile in Colorado and the 85th nationally (higher means more lead).
Other water systems in Weld County
54 other systems share Weld County; 6 of them have a higher latest lead result than North Weld County Wd. 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 |
| Windsor Town Of | 23,500 | 5.8 ppb |
| Evans City Of | 19,369 | 2.4 ppb |
| Frederick Town Of | 17,173 | 2.9 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; Lucerne, 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 North Weld County 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. The lead result guide covers how utilities pick the homes they sample. Systems that went over once often dip back under; here is what that means.