Ypsilanti Community Utility Authority, MI
Lead detected, under the action levels
Latest 90th-percentile lead: 4.1 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.
Ypsilanti Community Utility Authority at a glance
Ypsilanti Community Utility Authority serves about 53,988 people through 19,987 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 Washtenaw County, Michigan. EPA system ID: MI0007260; phone on file: 734-260-4832. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
That is down 2 ppb from 6.1 ppb in the period ending 2024. The highest 90th-percentile result EPA holds for Ypsilanti Community Utility Authority is 9.05 ppb across 8 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 4.1 ppb |
| 2024 | 6.1 ppb |
| 2023 | 6.5 ppb |
| 2022 | 7.3 ppb |
| 2021 | 8.76 ppb |
| 2020 | 7.05 ppb |
| 2019 | 9.05 ppb |
| 2017 | 1.44 ppb |
How Ypsilanti Community Utility Authority compares
Of the 1,227 Michigan systems with a lead result, the median latest reading is 1 ppb; 31 are over 15 ppb right now and 109 have gone over at some point. Ypsilanti Community Utility Authority's 4.1 ppb sits at the 85th percentile in Michigan and the 88th nationally (higher means more lead).
Neighbouring systems
30 other systems share Washtenaw County; 6 of them have a higher latest lead result than Ypsilanti Community Utility Authority. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Ann Arbor | 123,851 | 2.3 ppb |
| Pittsfield Township | 24,500 | 0 (not detected) |
| Saline | 9,158 | 0 (not detected) |
| Scio Township | 8,500 | 0 (not detected) |
| Milan | 7,363 | 5.1 ppb |
| Superior Township | 6,830 | 0 (not detected) |
| Chelsea | 5,474 | 0 (not detected) |
| Dexter | 4,500 | 0 (not detected) |
| Augusta Township | 3,907 | 0 (not detected) |
| Manchester | 2,150 | 4.9 ppb |
Next steps for Ypsilanti, MI
Test your own tap with a certified lab first-draw sample; Ypsilanti, MI 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 Ypsilanti Community Utility Authority 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. The action level is dropping - the 10 ppb rule from 2027.