Defiance City, OH
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.
Defiance City at a glance
Defiance City serves about 16,494 people through 6,934 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 surface water, in Defiance County, Ohio. EPA system ID: OH2000111; phone on file: 419-784-2101. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Defiance City's lead record
That is down 2.5 ppb from 2.5 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Defiance City is 3 ppb across 11 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 2.5 ppb |
| 2024 | 0 (not detected) |
| 2024 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2021 | 3 ppb |
| 2020 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2018 | 0 (not detected) |
| 2016 | 0 (not detected) |
How Defiance City compares
Of the 1,079 Ohio systems with a lead result, the median latest reading is 0.7 ppb; 1 are over 15 ppb right now and 27 have gone over at some point. Defiance City's reported as 0 (not detected) sits at the 40th percentile in Ohio and the 38th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
8 other systems share Defiance County; 2 of them have a higher latest lead result than Defiance City. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Hicksville Village | 3,600 | 1.6 ppb |
| Ayersville Water And Sewer District | 2,372 | 0 (not detected) |
| Ney Village | 854 | 2 ppb |
| Sherwood Village | 811 | 0 (not detected) |
| Brunersburg Wd - Brunersburg Pws | 500 | 0 (not detected) |
| Christi Water System Inc | 483 | 0 (not detected) |
| Brunersburg Wd - Evansport Pws | 268 | 0 (not detected) |
| Brunersburg Wd - Airport Pws | 40 | 0 (not detected) |
Next steps for Defiance, OH
Look up your address in Defiance City'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 Defiance City 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. A zero today does not rule out a jump later - the rules are tightening in 2027.