Oak Wood Circle, IN
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
Who runs the water here
Oak Wood Circle serves about 30 people through 24 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Kosciusko County, Indiana. EPA system ID: IN5243064; phone on file: 574-635-1171. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
Against the period ending 2025 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Oak Wood Circle is 2.53 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2024 | 2.53 ppb |
| 2021 | 0 (not detected) |
| 2017 | 0 (not detected) |
Against other Indiana systems
Of the 687 Indiana systems with a lead result, the median latest reading is 1.31 ppb; 6 are over 15 ppb right now and 36 have gone over at some point. Oak Wood Circle's reported as 0 (not detected) sits at the 1st percentile in Indiana and the 1st nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Kosciusko County
20 other systems share Kosciusko County; 10 of them have a higher latest lead result than Oak Wood Circle. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Indiana American Water - Warsaw | 13,835 | 2 ppb |
| Syracuse Water Company | 2,810 | - |
| Milford Water Department | 1,556 | 0 (not detected) |
| Silver Lake Water Works | 1,030 | 1.14 ppb |
| Mentone Water Company | 1,001 | 0 (not detected) |
| Pierceton Water Works | 928 | 0 (not detected) |
| Etna Green Water Department | 663 | 4.37 ppb |
| Turkey Creek Regional Sewer District | 593 | 0 (not detected) |
| Indiana American Water - Claypool | 413 | 0 (not detected) |
| Regency Pointe Estates Mobile Home Park | 345 | - |
Your move
Look up your address in Oak Wood Circle's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Oak Wood Circle 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. Small systems behave differently: why small systems go over more often.