St. Louis, City Of, MI
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2022-2024). 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.
St. Louis, City Of at a glance
St. Louis, City Of serves about 6,976 people through 1,340 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 surface water, in Gratiot County, Michigan. EPA system ID: MI0006320; phone on file: 989-681-4377. Call that number and ask whether your address has a lead, galvanized or unknown service line.
St. Louis, City Of's lead record
Against the period ending 2021 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for St. Louis, City Of is 7 ppb across 8 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0 (not detected) |
| 2021 | 1 ppb |
| 2020 | 2 ppb |
| 2019 | 2 ppb |
| 2018 | 3 ppb |
| 2017 | 3 ppb |
| 2016 | 5 ppb |
| 2016 | 7 ppb |
How St. Louis, City Of 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. St. Louis, City Of's reported as 0 (not detected) sits at the 32nd percentile in Michigan and the 36th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
9 other systems share Gratiot County; 5 of them have a higher latest lead result than St. Louis, City Of. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Alma, City Of | 9,182 | 0 (not detected) |
| Ithaca, City Of | 3,098 | 1.7 ppb |
| Breckenridge, Village Of | 1,339 | 1 ppb |
| Ashley, Village Of | 526 | 1 ppb |
| Perrinton, Village Of | 439 | 1 ppb |
| Nesen'S Countryside Acres | 95 | 0 (not detected) |
| Timber Country Mobile Home Park | 75 | 1 ppb |
| Mapleview Nursing Home | 45 | 0 (not detected) |
| Gratiot Area Water Authority | - | - |
Your move
Look up your address in St. Louis, City Of'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 St. Louis, 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. Why sampled homes are the worst-case ones is in the guide to reading the number. A zero today does not rule out a jump later - the rules are tightening in 2027.