Harrison Township, MI
Lead detected, under the action levels
Latest 90th-percentile lead: 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.
Harrison Township at a glance
Harrison Township serves about 24,314 people through 9,750 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 Macomb County, Michigan. EPA system ID: MI0003040; phone on file: 586-466-1446. They can tell you what your service line is made of and whether they pay to replace it.
Harrison Township's lead record
Against the period ending 2024 (2 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Harrison Township is 2 ppb across 8 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1 ppb |
| 2024 | 2 ppb |
| 2023 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2017 | 1 ppb |
Against other Michigan systems
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. Harrison Township's 1 ppb sits at the 50th percentile in Michigan and the 56th nationally (higher means more lead).
Other water systems in Macomb County
25 other systems share Macomb County; 9 of them have a higher latest lead result than Harrison Township. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Warren, City Of | 134,056 | 2.7 ppb |
| Sterling Heights, City Of | 127,000 | 0 (not detected) |
| Clinton Township | 100,513 | 1.2 ppb |
| Macomb Township | 90,000 | 0 (not detected) |
| Shelby Township | 72,000 | 0 (not detected) |
| St. Clair Shores, City Of | 59,715 | 1.1 ppb |
| Roseville, City Of | 47,299 | 8.68 ppb |
| Chesterfield Township | 41,650 | 0 (not detected) |
| Eastpointe, City Of | 32,442 | 0 (not detected) |
| Mount Clemens, City Of | 16,314 | 1.6 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Harrison Township, 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 Harrison Township 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.