Plymouth, MN
Lead detected, under the action levels
Latest 90th-percentile lead: 2 ppb (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. 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.
Plymouth at a glance
Plymouth serves about 76,546 people through 24,832 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 groundwater, in Hennepin County, Minnesota. EPA system ID: MN1270044; phone on file: 7635095080. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
Against the period ending 2021 (3 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Plymouth is 3 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 2 ppb |
| 2021 | 3 ppb |
| 2018 | 3 ppb |
Against other Minnesota systems
Of the 966 Minnesota systems with a lead result, the median latest reading is 0 ppb; 7 are over 15 ppb right now and 48 have gone over at some point. Plymouth's 2 ppb sits at the 78th percentile in Minnesota and the 73rd nationally (higher means more lead).
Neighbouring systems
41 other systems share Hennepin County; 6 of them have a higher latest lead result than Plymouth. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Minneapolis | 425,300 | 2 ppb |
| Bloomington | 91,300 | 2 ppb |
| Brooklyn Park | 89,995 | 1 ppb |
| Maple Grove | 82,000 | 2 ppb |
| Eden Prairie | 63,726 | 0 (not detected) |
| Minnetonka | 54,474 | 0 (not detected) |
| Edina | 53,494 | 0 (not detected) |
| Saint Louis Park | 50,010 | 4 ppb |
| Richfield | 38,482 | 0 (not detected) |
| Brooklyn Center | 33,782 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Plymouth, MN 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 Plymouth 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.