DEFIANCE CITY
Ohio — Community Water System — PWSID: OH2000111
System Information
| PWSID | OH2000111 |
| System Name | DEFIANCE CITY |
| System Type | Community Water System |
| Water Source | Surface Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 05 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jan 30, 1981 |
| Last Reported | Feb 25, 2026 |
Location & Contact
| State | Ohio |
| City | DEFIANCE |
| ZIP Code | 43512-2779 |
| Address | City of Defiance |
| Organization | MACK, RYAN |
| Phone | 419-784-2201 |
Population & Service
| Population Served | 16,494 |
| Service Connections | 6,615 |
Drinking Water Violations (386)
This water system has 386 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2022 | Sep 30, 2022 | MCL | Yes | No | .086 MG/L | 0.080 mg/L | .08 | Resolved | Sep 30, 2022 | — | |
| Jul 1, 2022 | Sep 30, 2022 | MCL | Yes | No | .086 MG/L | 0.080 mg/L | .08 | Resolved | Sep 30, 2022 | — | |
| Jul 1, 2022 | Sep 30, 2022 | MCL | Yes | No | .086 MG/L | 0.080 mg/L | .08 | Resolved | Sep 30, 2022 | — | |
| Jul 1, 2022 | Sep 30, 2022 | MCL | Yes | No | .086 MG/L | 0.080 mg/L | .08 | Resolved | Sep 30, 2022 | — | |
| Apr 1, 2022 | Jun 30, 2022 | MCL | Yes | No | .104 MG/L | 0.080 mg/L | .08 | Resolved | Jun 30, 2022 | — | |
| Apr 1, 2022 | Jun 30, 2022 | MCL | Yes | No | .104 MG/L | 0.080 mg/L | .08 | Resolved | Jun 30, 2022 | — | |
| Apr 1, 2022 | Jun 30, 2022 | MCL | Yes | No | .104 MG/L | 0.080 mg/L | .08 | Resolved | Jun 30, 2022 | — | |
| Apr 1, 2022 | Jun 30, 2022 | MCL | Yes | No | .104 MG/L | 0.080 mg/L | .08 | Resolved | Jun 30, 2022 | — | |
| Apr 1, 2022 | Jun 30, 2022 | MCL | Yes | No | .104 MG/L | 0.080 mg/L | .08 | Resolved | Jun 30, 2022 | — | |
| Jan 1, 2022 | Mar 31, 2022 | MCL | Yes | No | .105 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2022 | — | |
| Jan 1, 2022 | Mar 31, 2022 | MCL | Yes | No | .105 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2022 | — | |
| Jan 1, 2022 | Mar 31, 2022 | MCL | Yes | No | .105 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2022 | — | |
| Jan 1, 2022 | Mar 31, 2022 | MCL | Yes | No | .105 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2022 | — | |
| Jan 1, 2022 | Mar 31, 2022 | MCL | Yes | No | .105 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2022 | — | |
| Jan 1, 2022 | Mar 31, 2022 | MCL | Yes | No | .105 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2022 | — | |
| Oct 1, 2021 | Dec 31, 2021 | MCL | Yes | No | .106 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2021 | — | |
| Oct 1, 2021 | Dec 31, 2021 | MCL | Yes | No | .106 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2021 | — | |
| Oct 1, 2021 | Dec 31, 2021 | MCL | Yes | No | .106 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2021 | — | |
| Oct 1, 2021 | Dec 31, 2021 | MCL | Yes | No | .106 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2021 | — | |
| Oct 1, 2021 | Dec 31, 2021 | MCL | Yes | No | .106 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2021 | — | |
| Oct 1, 2021 | Dec 31, 2021 | MCL | Yes | No | .106 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2021 | — | |
| Jul 1, 2021 | Sep 30, 2021 | MCL | Yes | No | .106 MG/L | 0.080 mg/L | .08 | Resolved | Sep 30, 2021 | — | |
| Jul 1, 2021 | Sep 30, 2021 | MCL | Yes | No | .106 MG/L | 0.080 mg/L | .08 | Resolved | Sep 30, 2021 | — | |
| Jul 1, 2021 | Sep 30, 2021 | MCL | Yes | No | .106 MG/L | 0.080 mg/L | .08 | Resolved | Sep 30, 2021 | — | |
| Jul 1, 2021 | Sep 30, 2021 | MCL | Yes | No | .106 MG/L | 0.080 mg/L | .08 | Resolved | Sep 30, 2021 | — | |
| Jul 1, 2021 | Sep 30, 2021 | MCL | Yes | No | .106 MG/L | 0.080 mg/L | .08 | Resolved | Sep 30, 2021 | — | |
| Jul 1, 2021 | Sep 30, 2021 | MCL | Yes | No | .106 MG/L | 0.080 mg/L | .08 | Resolved | Sep 30, 2021 | — | |
| Apr 1, 2021 | Jun 30, 2021 | MCL | Yes | No | .101 MG/L | 0.080 mg/L | .08 | Resolved | Jun 30, 2021 | — | |
| Apr 1, 2021 | Jun 30, 2021 | MCL | Yes | No | .101 MG/L | 0.080 mg/L | .08 | Resolved | Jun 30, 2021 | — | |
| Apr 1, 2021 | Jun 30, 2021 | MCL | Yes | No | .101 MG/L | 0.080 mg/L | .08 | Resolved | Jun 30, 2021 | — | |
| Apr 1, 2021 | Jun 30, 2021 | MCL | Yes | No | .101 MG/L | 0.080 mg/L | .08 | Resolved | Jun 30, 2021 | — | |
| Apr 1, 2021 | Jun 30, 2021 | MCL | Yes | No | .101 MG/L | 0.080 mg/L | .08 | Resolved | Jun 30, 2021 | — | |
| Apr 1, 2021 | Jun 30, 2021 | MCL | Yes | No | .101 MG/L | 0.080 mg/L | .08 | Resolved | Jun 30, 2021 | — | |
| Jan 1, 2021 | Mar 31, 2021 | MCL | Yes | No | .097 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2021 | — | |
| Jan 1, 2021 | Mar 31, 2021 | MCL | Yes | No | .097 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2021 | — | |
| Jan 1, 2021 | Mar 31, 2021 | MCL | Yes | No | .097 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2021 | — | |
| Jan 1, 2021 | Mar 31, 2021 | MCL | Yes | No | .097 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2021 | — | |
| Jan 1, 2021 | Mar 31, 2021 | MCL | Yes | No | .097 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2021 | — | |
| Jan 1, 2021 | Mar 31, 2021 | MCL | Yes | No | .097 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2021 | — | |
| Oct 1, 2020 | Dec 31, 2020 | MCL | Yes | No | .091 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2020 | — | |
| Oct 1, 2020 | Dec 31, 2020 | MCL | Yes | No | .091 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2020 | — | |
| Oct 1, 2020 | Dec 31, 2020 | MCL | Yes | No | .091 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2020 | — | |
| Oct 1, 2020 | Dec 31, 2020 | MCL | Yes | No | .091 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2020 | — | |
| Oct 1, 2020 | Dec 31, 2020 | MCL | Yes | No | .091 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2020 | — | |
| Oct 1, 2020 | Dec 31, 2020 | MCL | Yes | No | .091 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2020 | — | |
| Jul 1, 2020 | Sep 30, 2020 | MCL | Yes | No | .09 MG/L | 0.080 mg/L | .08 | Resolved | Sep 30, 2020 | — | |
| Jul 1, 2020 | Sep 30, 2020 | MCL | Yes | No | .09 MG/L | 0.080 mg/L | .08 | Resolved | Sep 30, 2020 | — | |
| Jul 1, 2020 | Sep 30, 2020 | MCL | Yes | No | .09 MG/L | 0.080 mg/L | .08 | Resolved | Sep 30, 2020 | — | |
| Jul 1, 2020 | Sep 30, 2020 | MCL | Yes | No | .09 MG/L | 0.080 mg/L | .08 | Resolved | Sep 30, 2020 | — | |
| Jul 1, 2020 | Sep 30, 2020 | MCL | Yes | No | .09 MG/L | 0.080 mg/L | .08 | Resolved | Sep 30, 2020 | — |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.