Greystone Mhp, MN
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.
About Greystone Mhp
Greystone Mhp serves about 500 people through 163 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Anoka County, Minnesota. EPA system ID: MN1020005; phone on file: 6126180946. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Greystone Mhp's lead record
Against the period ending 2021 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Greystone Mhp is 0 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0 (not detected) |
| 2021 | 0 (not detected) |
How Greystone Mhp compares
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. Greystone Mhp's reported as 0 (not detected) sits at the 28th percentile in Minnesota and the 22nd nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Anoka County
29 other systems share Anoka County; 5 of them have a higher latest lead result than Greystone Mhp. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Blaine | 70,220 | 0 (not detected) |
| Coon Rapids | 63,599 | 0 (not detected) |
| Fridley | 27,476 | 0 (not detected) |
| Columbia Heights | 22,278 | 0 (not detected) |
| Andover | 21,455 | 0 (not detected) |
| Lino Lakes | 18,608 | 2 ppb |
| Anoka | 17,798 | 2 ppb |
| Ramsey | 17,705 | 0 (not detected) |
| Spring Lake Park | 7,200 | 2 ppb |
| Saint Francis | 5,200 | 0 (not detected) |
What to do in your house
Look up your address in Greystone 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 Greystone 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Small systems behave differently: why small systems go over more often.