Maple Grove Mhp, WI
Lead detected, under the action levels
Latest 90th-percentile lead: 0.29 ppb (monitoring period 2021-2021). 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.
Who runs the water here
Maple Grove Mhp serves about 125 people through 49 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Dodge County, Wisconsin. EPA system ID: WI1140135. Ask the utility on your bill for your address in their service line inventory.
Maple Grove Mhp's lead record
That is down 2.77 ppb from 3.06 ppb in the period ending 2018. The highest 90th-percentile result EPA holds for Maple Grove Mhp is 3.06 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2021 | 0.29 ppb |
| 2018 | 3.06 ppb |
How Maple Grove Mhp compares
Of the 947 Wisconsin systems with a lead result, the median latest reading is 1.33 ppb; 6 are over 15 ppb right now and 71 have gone over at some point. Maple Grove Mhp's 0.29 ppb sits at the 21st percentile in Wisconsin and the 41st nationally (higher means more lead).
Other water systems in Dodge County
22 other systems share Dodge County; 19 of them have a higher latest lead result than Maple Grove Mhp. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Beaver Dam Water Utility | 16,200 | 11.3 ppb |
| Waupun Utilities | 8,056 | 1.2 ppb |
| Mayville Waterworks | 5,112 | 3.3 ppb |
| Waupun Correctional Inst | 3,706 | 0.87 ppb |
| Horicon Waterworks | 3,682 | 3.2 ppb |
| Lomira Waterworks | 2,701 | 8.2 ppb |
| Juneau Waterworks | 2,627 | 2.7 ppb |
| Fox Lake Correctional Institution | 1,850 | 0 (not detected) |
| Fox Lake Waterworks | 1,610 | 0.79 ppb |
| Theresa Waterworks | 1,262 | 0.67 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Beaver Dam, WI 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 Maple Grove 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. Size matters more than most people expect: small vs large water systems.