Three Rivers, MI
Exceeded the action level in the past
Latest 90th-percentile lead: 4 ppb (monitoring period 2026-2026). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
Three Rivers at a glance
Three Rivers serves about 7,905 people through 2,600 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in St. Joseph County, Michigan. EPA system ID: MI0006610; phone on file: 269-273-1075. They can tell you what your service line is made of and whether they pay to replace it.
Three Rivers's lead record
That is down 8 ppb from 12 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Three Rivers is 28 ppb across 11 monitoring periods, 3 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 4 ppb |
| 2025 | 12 ppb over 10 |
| 2025 | 6 ppb |
| 2024 | 6 ppb |
| 2024 | 28 ppb over 15 |
| 2023 | 16 ppb over 15 |
| 2023 | 19 ppb over 15 |
| 2020 | 3.5 ppb |
| 2020 | 3.5 ppb |
| 2017 | 5 ppb |
| 2017 | 5 ppb |
How Three Rivers 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. Three Rivers's 4 ppb sits at the 85th percentile in Michigan and the 88th nationally (higher means more lead).
Other water systems in St. Joseph County
14 other systems share St. Joseph County; 0 of them have a higher latest lead result than Three Rivers. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Sturgis | 11,920 | 2 ppb |
| Constantine | 2,075 | 0 (not detected) |
| Lockport Township | 1,778 | 1.02 ppb |
| White Pigeon | 1,640 | 1.3 ppb |
| Centreville | 1,579 | 0 (not detected) |
| Glen Oaks Community College | 1,233 | 1.2 ppb |
| Colon | 1,190 | 0 (not detected) |
| Mendon | 920 | 0 (not detected) |
| Burr Oak | 828 | 0 (not detected) |
| Clearwater Village Mobile Home Park | 400 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Three Rivers, 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 Three Rivers 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. Why an old exceedance still matters: over the limit before, under it now.