Maple Terrace Mhc, IL
Lead detected, under the action levels
Latest 90th-percentile lead: 0.53 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.
Maple Terrace Mhc at a glance
Maple Terrace Mhc serves about 124 people through 80 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Washington County, Illinois. EPA system ID: WI2670107. Ask the utility on your bill for your address in their service line inventory.
Lead results over time
That is down 5.52 ppb from 6.05 ppb in the period ending 2018. The highest 90th-percentile result EPA holds for Maple Terrace Mhc is 6.05 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2021 | 0.53 ppb |
| 2018 | 6.05 ppb |
Against other Illinois systems
Of the 1,744 Illinois systems with a lead result, the median latest reading is 0 ppb; 22 are over 15 ppb right now and 152 have gone over at some point. Maple Terrace Mhc's 0.53 ppb sits at the 56th percentile in Illinois and the 44th nationally (higher means more lead).
Other water systems in Washington County
14 other systems share Washington County; 5 of them have a higher latest lead result than Maple Terrace Mhc. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Washington County Water Company | 12,040 | 2 ppb |
| Nashville | 3,230 | 0 (not detected) |
| Okawville | 1,457 | 2.1 ppb |
| Irvington | 1,081 | 0 (not detected) |
| Hoyleton Rwc | 1,020 | 0 (not detected) |
| Hoyleton | 658 | 0 (not detected) |
| Ashley | 565 | 1.9 ppb |
| New Minden | 343 | 0 (not detected) |
| Richview | 251 | 0 (not detected) |
| Brookside Meadows Mhp | 250 | 3.8 ppb |
Next steps for Barrington, IL
Test your own tap with a certified lab first-draw sample; Barrington, IL 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 Terrace Mhc 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. The action level is dropping - the 10 ppb rule from 2027.