Washington Mhp, MI
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2021-2023). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
Who runs the water here
Washington Mhp serves about 268 people through 107 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Macomb County, Michigan. EPA system ID: MI0040330; phone on file: 586-781-4562. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
The highest 90th-percentile result EPA holds for Washington Mhp is 0 ppb across 1 monitoring period, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 0 (not detected) |
How Washington Mhp 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. Washington Mhp's reported as 0 (not detected) sits at the 15th percentile in Michigan and the 18th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Macomb County
25 other systems share Macomb County; 10 of them have a higher latest lead result than Washington Mhp. 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) |
| Harrison Township | 24,314 | 1 ppb |
What to do in your house
Look up your address in Washington Mhp's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Washington Mhp 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. A zero today does not rule out a jump later - the rules are tightening in 2027.