Arrowhead Mhp, MI
Lead detected, under the action levels
Latest 90th-percentile lead: 6 ppb (monitoring period 2023-2025). 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.
Arrowhead Mhp at a glance
Arrowhead Mhp serves about 135 people through 54 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in El Paso County, Michigan. EPA system ID: CO0121050; phone on file: 248-254-7614. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
That is up 5.5 ppb from 0.5 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for Arrowhead Mhp is 6 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 6 ppb |
| 2021 | 0.5 ppb |
| 2020 | 0 (not detected) |
| 2019 | 1.5 ppb |
| 2018 | 5 ppb |
| 2017 | 0.5 ppb |
| 2016 | 4.5 ppb |
Where this result ranks
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. Arrowhead Mhp's 6 ppb sits at the 90th percentile in Michigan and the 93rd nationally (higher means more lead).
Your move
Test your own tap with a certified lab first-draw sample; Bloomfield Hills, 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 Arrowhead 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. The lead result guide covers how utilities pick the homes they sample. Size matters more than most people expect: small vs large water systems.