Geneva, IL
Lead detected, under the action levels
Latest 90th-percentile lead: 5.35 ppb (monitoring period 2026-2026). 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.
Geneva at a glance
Geneva serves about 21,247 people through 8,409 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Kane County, Illinois. EPA system ID: IL0890350; phone on file: 630-232-1551. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
That is up 5.35 ppb from 0 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Geneva is 10.7 ppb across 7 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 5.35 ppb |
| 2025 | 0 (not detected) |
| 2025 | 9.46 ppb |
| 2025 | 10.7 ppb over 10 |
| 2023 | 5.19 ppb |
| 2020 | 2.68 ppb |
| 2017 | 4.68 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. Geneva's 5.35 ppb sits at the 89th percentile in Illinois and the 92nd nationally (higher means more lead).
Nearby utilities
38 other systems share Kane County; 7 of them have a higher latest lead result than Geneva. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Aurora | 183,000 | 25.7 ppb |
| Elgin | 114,797 | 18.5 ppb |
| Carpentersville | 37,983 | 1.1 ppb |
| St Charles | 33,081 | 3.9 ppb |
| Montgomery | 28,956 | 0 (not detected) |
| Batavia | 26,098 | 3.82 ppb |
| South Elgin | 23,648 | 1.4 ppb |
| North Aurora | 18,261 | 6.2 ppb |
| Sugar Grove | 11,243 | 0 (not detected) |
| Pingree Grove | 10,365 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Geneva, 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 Geneva 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. Systems that went over once often dip back under; here is what that means.