Greeley City Of, CO
Lead detected, under the action levels
Latest 90th-percentile lead: 4 ppb (monitoring period 2025-2025). 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 Greeley City Of
Greeley City Of serves about 132,310 people through 30,250 service connections, which makes it a very 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: CO0162321; phone on file: 970-350-9836. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
Against the period ending 2025 (3 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Greeley City Of is 7.4 ppb across 13 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 4 ppb |
| 2025 | 3 ppb |
| 2024 | 4.9 ppb |
| 2024 | 5.9 ppb |
| 2023 | 4.2 ppb |
| 2023 | 6.9 ppb |
| 2022 | 7.4 ppb |
| 2021 | 5.5 ppb |
| 2020 | 2.8 ppb |
| 2019 | 6.4 ppb |
| 2018 | 4.6 ppb |
| 2017 | 4.3 ppb |
| 2016 | 1.9 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. Greeley City Of's 4 ppb sits at the 91st percentile in Colorado and the 88th nationally (higher means more lead).
Other water systems in Weld County
54 other systems share Weld County; 1 of them has a higher latest lead result than Greeley City Of. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| 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 |
| 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 | - |
Your move
Test your own tap with a certified lab first-draw sample; Greeley, 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 Greeley City 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. The lead result guide covers how utilities pick the homes they sample. Size matters more than most people expect: small vs large water systems.