Ottawa Estates Mhp, IL
Lead detected, under the action levels
Latest 90th-percentile lead: 2.74 ppb (monitoring period 2024-2026). 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.
Ottawa Estates Mhp at a glance
Ottawa Estates Mhp serves about 125 people through 50 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Lasalle County, Illinois. EPA system ID: IL0995225; phone on file: 815-343-0381. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
That is up 2.74 ppb from 0 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Ottawa Estates Mhp is 6.5 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 2.74 ppb |
| 2023 | 0 (not detected) |
| 2020 | 2.3 ppb |
| 2017 | 6.5 ppb |
Where this result ranks
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. Ottawa Estates Mhp's 2.74 ppb sits at the 79th percentile in Illinois and the 79th nationally (higher means more lead).
Neighbouring systems
34 other systems share Lasalle County; 10 of them have a higher latest lead result than Ottawa Estates Mhp. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Il American-Streator | 19,000 | 1 ppb |
| Ottawa | 18,097 | 0 (not detected) |
| Peru | 9,896 | 10.5 ppb |
| La Salle | 9,700 | 0 (not detected) |
| Mendota | 7,100 | 7.06 ppb |
| Marseilles | 5,061 | 0 (not detected) |
| Il American-Lake Holiday | 4,750 | 2 ppb |
| Oglesby | 4,500 | 0 (not detected) |
| Seneca | 2,353 | 0 (not detected) |
| Sheridan Correctional Center | 1,670 | 3.6 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Lake Forest, 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 Ottawa Estates 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. Why sampled homes are the worst-case ones is in the guide to reading the number. Systems that went over once often dip back under; here is what that means.