Gc Mankato Hill Llc, MN
Exceeded the action level in the past
Latest 90th-percentile lead: reported as 0 (not detected) (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.
About Gc Mankato Hill Llc
Gc Mankato Hill Llc serves about 140 people through 8 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Blue Earth County, Minnesota. EPA system ID: MN1070024. Ask the utility on your bill for your address in their service line inventory.
Every lead result on file
That is down 5 ppb from 5 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Gc Mankato Hill Llc is 45 ppb across 12 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 5 ppb |
| 2024 | 1 ppb |
| 2023 | 4 ppb |
| 2022 | 1 ppb |
| 2022 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2018 | 0 (not detected) |
| 2018 | 0 (not detected) |
| 2017 | 45 ppb over 15 |
Where this result ranks
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. Gc Mankato Hill Llc's reported as 0 (not detected) sits at the 15th percentile in Minnesota and the 12th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
16 other systems share Blue Earth County; 13 of them have a higher latest lead result than Gc Mankato Hill Llc. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Mankato | 42,803 | 2 ppb |
| Eagle Lake | 3,268 | 1 ppb |
| Lake Crystal | 2,554 | 2 ppb |
| Mapleton | 1,756 | 2 ppb |
| Madison Lake | 1,017 | 0 (not detected) |
| Saint Clair | 846 | 6 ppb |
| Good Thunder | 583 | 2 ppb |
| Amboy | 535 | 6 ppb |
| South Bend Township | 325 | 1 ppb |
| Vernon Center | 323 | 1 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Mankato, 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 Gc Mankato Hill Llc whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1409 ppb (copper action level 1,300 ppb).
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. More in what a past exceedance means today.