Public water system record
Defiance City
Serves Defiance, Defiance County, OH · 16,494 people served
Federal records show 22 health-based violations and 4 monitoring/reporting issues for Defiance City in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.
System profile
Source water
Surface water
ZIP
43512
EPA system ID
OH2000111
- Health-based violations, last 10 years
- 22
- Resolved
- 22
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 4
Key facts
- Defiance City draws water from 3 surface water intakes and 1 reservoir.
- Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.106 mg/L, federal limit 0.08 mg/L (1.3 times the limit), 2021.
- Most recent formal enforcement: compliance order (no penalty) by Ohio, March 2022.
- Record on file since 1984, with 32 health-based violations before October 19, 2016.
- Lead pipe inventory: 11 lead and 1,758 unknown out of 7,431 service lines.
Check whether Defiance City serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.086 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Jul 1, 2022 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.104 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Apr 1, 2022 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.105 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Jan 1, 2022 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.106 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Oct 1, 2021 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.106 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Jul 1, 2021 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.101 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Apr 1, 2021 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.097 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Jan 1, 2021 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.091 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Oct 1, 2020 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.09 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Jul 1, 2020 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.0891 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Apr 1, 2020 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.0856 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Jan 1, 2020 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.08658 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Oct 1, 2019 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.088 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Jul 1, 2019 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.091 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Apr 1, 2019 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.094 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Jan 1, 2019 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.094 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Oct 1, 2018 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.092 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Jul 1, 2018 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.091 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Apr 1, 2018 | Resolved | No |
|
Lead and Copper Rule
Treatment technique failure
|
350 | Jan 1, 2018 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.09 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Jan 1, 2018 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.09 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Oct 1, 2017 | Resolved | No |
|
Lead and Copper Rule
Treatment technique failure
|
350 | Jan 1, 2017 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Apr 28, 2020 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Dec 24, 2019 |
Active
Enforcement action in place
|
|
Public Notice
OTHER
|
Sep 14, 2018 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Sep 13, 2018 |
Active
Enforcement action in place
|
Full record since 1984
EPA's records for Defiance City go back to 1984. Before October 19, 2016 they list 32 health-based violations (31 resolved, 1 archived by EPA without a recorded fix) and 15 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 2 | 0 |
| 1990s | 7 | 9 |
| 2000s | 19 | 4 |
| 2010 to October 18, 2016 | 4 | 2 |
| October 19, 2016 to 2019 | 11 | 3 |
| 2020s | 11 | 1 |
Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began July 2014, Resolved.
Show all 32 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.09 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Jul 1, 2014 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.094 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
Apr 1, 2014 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.097 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
Jan 1, 2014 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.086 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Oct 1, 2013 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Apr 1, 2007 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 11.2 mg/L, federal limit 10 mg/L (1.1 times the limit)
|
May 1, 2006 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.087 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Oct 1, 2005 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.105 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
Jul 1, 2005 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
May 1, 2005 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.101 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
Apr 1, 2005 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.105 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
Jan 1, 2005 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.106 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
Oct 1, 2004 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.088 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Jul 1, 2004 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.086 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Jul 1, 2003 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 10.9 mg/L, federal limit 10 mg/L (1.1 times the limit)
|
Jun 1, 2003 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.087 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Apr 1, 2003 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.083 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
Jan 1, 2003 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 12.2 mg/L, federal limit 10 mg/L (1.2 times the limit)
|
Jan 1, 2003 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 18.2 mg/L, federal limit 10 mg/L (1.8 times the limit)
|
Dec 1, 2002 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
Oct 1, 2002 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 13 mg/L, federal limit 10 mg/L (1.3 times the limit)
|
May 1, 2001 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 10.8 mg/L, federal limit 10 mg/L (1.1 times the limit)
|
Jun 1, 2000 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 13.6 mg/L, federal limit 10 mg/L (1.4 times the limit)
|
Feb 1, 2000 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 14.6 mg/L, federal limit 10 mg/L (1.5 times the limit)
|
Jun 1, 1999 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 1999 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 14.4 mg/L, federal limit 10 mg/L (1.4 times the limit)
|
Jun 19, 1998 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 14.6 mg/L, federal limit 10 mg/L (1.5 times the limit)
|
Jun 3, 1998 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Apr 1, 1998 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 1993 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 1993 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jun 1, 1986 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Oct 1, 1984 | Resolved |
Enforcement actions
Ohio regulators took 5 formal enforcement actions against Defiance City between 2006 and 2022, filed as 6 records in EPA's data. The most recent was a compliance order (no penalty) in March 2022.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Mar 16, 2022 | Ohio | Compliance order (no penalty) | 4 violations (4 health-based): Total Trihalomethanes (TTHMs) |
| Jan 21, 2021 | Ohio | Compliance order (no penalty) | 6 violations (5 health-based): Total Trihalomethanes (TTHMs) |
| May 19, 2020 | Ohio | Compliance order with a penalty | 31 violations (25 health-based): CARBON, TOTAL, Total Trihalomethanes (TTHMs), Lead and Copper Rule, Consumer Confidence Rule, Public Notice |
| Jan 4, 2019 | Ohio | Compliance order (no penalty) | 10 violations (8 health-based): Total Trihalomethanes (TTHMs), Consumer Confidence Rule, Lead and Copper Rule, Public Notice |
| May 30, 2006 | Ohio | Compliance order with a penalty | 61 violations (44 health-based): OXAMYL, Carbofuran, Total Polychlorinated Biphenyls (PCB), Surface Water Treatment Rule, Consumer Confidence Rule |
What the violations mean
Total Trihalomethanes (TTHMs)
20 incidentsDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
Lead and Copper Rule
2 incidentsThe system did not complete a treatment step or action that the Lead and Copper Rule requires (a treatment technique violation).
The utility had to notify customers about each of these violations.
Where the water comes from
Defiance City draws water from 3 surface water intakes and 1 reservoir. 4 other community water systems and 1 smaller public system such as schools, businesses or campgrounds buy water from Defiance City.
Community systems that buy water from it
- Ayersville Water and Sewer District Defiance, OH
- Brunersburg WD - Airport PWS Defiance, OH
- Brunersburg WD - Brunersburg PWS Defiance, OH
- Christi Water System Inc Defiance, OH
Annual water quality report
Defiance City must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Ohio.
Certified drinking water labs by state EPA guidance for private wells