Public water system record
Grandfield
Serves an area of Tillman County and Cotton County, OK · 1,110 people served
Federal records show 60 health-based violations and 5 monitoring/reporting issues for Grandfield in the last ten years. The most serious issue in this window was a Nitrate-Nitrite violation that EPA lists as archived, not resolved.
System profile
Source water
Purchased surface water
ZIP
73546
EPA system ID
OK2007103
- Health-based violations, last 10 years
- 60
- Resolved
- 32
- Unresolved
- 0
- Archived by EPA
- 28
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 5
Key facts
- Grandfield draws water from 7 wells.
- Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.151 mg/L, federal limit 0.08 mg/L (1.9 times the limit), 2023.
- Most recent formal enforcement: compliance order with a penalty by Oklahoma, February 2024.
- Record on file since 1978, with 94 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 595 unknown out of 595 service lines.
Check whether Grandfield 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 |
|---|---|---|---|---|
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Oct 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Apr 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jan 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Oct 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jul 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Apr 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.086 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Jan 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.113 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
|
220 | Oct 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.135 mg/L, federal limit 0.08 mg/L (1.7 times the limit)
|
220 | Jul 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.151 mg/L, federal limit 0.08 mg/L (1.9 times the limit)
|
220 | Apr 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Apr 1, 2023 | Resolved | Yes |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.128 mg/L, federal limit 0.08 mg/L (1.6 times the limit)
|
220 | Jan 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jan 1, 2023 | Resolved | Yes |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.122 mg/L, federal limit 0.08 mg/L (1.5 times the limit)
|
220 | Oct 1, 2022 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Oct 1, 2022 | Resolved | Yes |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.117 mg/L, federal limit 0.08 mg/L (1.5 times the limit)
|
220 | Jul 1, 2022 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jul 1, 2022 | Resolved | Yes |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Apr 1, 2022 | Resolved | Yes |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.083 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
220 | Jan 1, 2022 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jan 1, 2022 | Resolved | Yes |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Oct 1, 2021 | Resolved | Yes |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jul 1, 2021 | Resolved | Yes |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.088 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Apr 1, 2021 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Apr 1, 2021 | Resolved | Yes |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.085 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Jan 1, 2021 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jan 1, 2021 | Resolved | Yes |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.086 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Oct 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Oct 1, 2020 | Resolved | Yes |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Jul 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jul 1, 2020 | Resolved | Yes |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
220 | Apr 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Apr 1, 2020 | Resolved | Yes |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jan 1, 2020 | Resolved | Yes |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Oct 1, 2019 | Resolved | Yes |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Oct 1, 2019 | Resolved | Yes |
|
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, 2019 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jul 1, 2019 | Resolved | Yes |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.098 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Apr 1, 2019 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Apr 1, 2019 | Resolved | Yes |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.101 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Jan 1, 2019 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jan 1, 2019 | Resolved | Yes |
|
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, 2018 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Oct 1, 2018 | Resolved | Yes |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.099 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Jul 1, 2018 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jul 1, 2018 | Resolved | Yes |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.089 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Apr 1, 2018 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Apr 1, 2018 | Resolved | Yes |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.085 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Jan 1, 2018 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jan 1, 2018 | Resolved | Yes |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.086 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Oct 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Oct 1, 2017 | Resolved | Yes |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.087 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Jul 1, 2017 | Resolved | No |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jul 1, 2017 | Resolved | Yes |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.094 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Apr 1, 2017 | Resolved | No |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Apr 1, 2017 | Resolved | Yes |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.089 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Jan 1, 2017 | Resolved | No |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jan 1, 2017 | Resolved | Yes |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.086 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Oct 1, 2016 | Resolved | No |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Oct 1, 2016 | Resolved | Yes |
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
|
Dec 30, 2023 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Sep 29, 2023 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jun 30, 2023 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Dec 30, 2022 | Resolved |
Full record since 1978
EPA's records for Grandfield go back to 1978. Before October 19, 2016 they list 94 health-based violations (92 resolved, 2 archived by EPA without a recorded fix) and 56 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 3 | 0 |
| 1980s | 3 | 0 |
| 1990s | 5 | 2 |
| 2000s | 32 | 49 |
| 2010 to October 18, 2016 | 51 | 5 |
| October 19, 2016 to 2019 | 24 | 0 |
| 2020s | 34 | 5 |
Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began October 2016, Resolved.
Show all 94 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.086 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Oct 1, 2016 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Oct 1, 2016 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jul 1, 2016 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Apr 1, 2016 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.115 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
|
Jan 1, 2016 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2016 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.153 mg/L, federal limit 0.08 mg/L (1.9 times the limit)
|
Oct 1, 2015 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Oct 1, 2015 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.134 mg/L, federal limit 0.08 mg/L (1.7 times the limit)
|
Jul 1, 2015 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jul 1, 2015 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.236 mg/L, federal limit 0.08 mg/L (3 times the limit)
|
Apr 1, 2015 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Apr 1, 2015 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.211 mg/L, federal limit 0.08 mg/L (2.6 times the limit)
|
Jan 1, 2015 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2015 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.156 mg/L, federal limit 0.08 mg/L (2 times the limit)
|
Oct 1, 2014 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Oct 1, 2014 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.171 mg/L, federal limit 0.08 mg/L (2.1 times the limit)
|
Jul 1, 2014 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jul 1, 2014 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Apr 1, 2014 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2014 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Oct 1, 2013 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.165 mg/L, federal limit 0.08 mg/L (2.1 times the limit)
|
Jul 1, 2013 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jul 1, 2013 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.149 mg/L, federal limit 0.08 mg/L (1.9 times the limit)
|
Apr 1, 2013 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Apr 1, 2013 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.152 mg/L, federal limit 0.08 mg/L (1.9 times the limit)
|
Jan 1, 2013 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2013 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.156 mg/L, federal limit 0.08 mg/L (2 times the limit)
|
Oct 1, 2012 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Oct 1, 2012 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.16 mg/L, federal limit 0.08 mg/L (2 times the limit)
|
Jul 1, 2012 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jul 1, 2012 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.158 mg/L, federal limit 0.08 mg/L (2 times the limit)
|
Apr 1, 2012 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Apr 1, 2012 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.163 mg/L, federal limit 0.08 mg/L (2 times the limit)
|
Jan 1, 2012 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2012 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.163 mg/L, federal limit 0.08 mg/L (2 times the limit)
|
Oct 1, 2011 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Oct 1, 2011 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.157 mg/L, federal limit 0.08 mg/L (2 times the limit)
|
Jul 1, 2011 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jul 1, 2011 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.162 mg/L, federal limit 0.08 mg/L (2 times the limit)
|
Apr 1, 2011 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Apr 1, 2011 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2011 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.167 mg/L, federal limit 0.08 mg/L (2.1 times the limit)
|
Jan 1, 2011 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Oct 1, 2010 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.166 mg/L, federal limit 0.08 mg/L (2.1 times the limit)
|
Oct 1, 2010 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.164 mg/L, federal limit 0.08 mg/L (2.1 times the limit)
|
Jul 1, 2010 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jul 1, 2010 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.168 mg/L, federal limit 0.08 mg/L (2.1 times the limit)
|
Apr 1, 2010 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Apr 1, 2010 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.138 mg/L, federal limit 0.08 mg/L (1.7 times the limit)
|
Jan 1, 2010 | Resolved |
44 older violations are not listed here. EPA ECHO has the complete list.
Enforcement actions
Oklahoma regulators took 42 formal enforcement actions against Grandfield between 1986 and 2024. The most recent was a compliance order with a penalty in February 2024.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Feb 26, 2024 | Oklahoma | Compliance order with a penalty | 103 violations (103 health-based): Nitrate-Nitrite, Total Trihalomethanes (TTHMs) |
| Aug 25, 2022 | Oklahoma | Compliance order with a penalty | 3 violations (3 health-based): Nitrate-Nitrite |
| Jun 28, 2021 | Oklahoma | Compliance order with a penalty | 72 violations (64 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
| May 3, 2018 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Sep 11, 2017 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Jun 20, 2017 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Mar 23, 2017 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Feb 8, 2017 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Jun 23, 2016 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Dec 30, 2015 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Oct 12, 2015 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Aug 19, 2015 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Apr 9, 2015 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Dec 31, 2014 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Sep 8, 2014 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Feb 22, 2011 | Oklahoma | Compliance order with a penalty | 1 violation: Toxaphene |
| Oct 23, 2009 | Oklahoma | Compliance order with a penalty | 6 violations: Total Coliform |
| May 18, 2009 | Oklahoma | Compliance order with a penalty | 77 violations (72 health-based): Nitrate-Nitrite, Nitrate, Total Trihalomethanes (TTHMs) |
| Apr 30, 2009 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| Dec 24, 2008 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| Nov 26, 2008 | Oklahoma | Compliance order with a penalty | 7 violations: Total Coliform |
| Oct 10, 2008 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| May 13, 2008 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| Mar 5, 2008 | Oklahoma | Compliance order with a penalty | 21 violations: p-Dichlorobenzene, 1,1,2-Trichloroethane, Tetrachloroethylene, CHLOROBENZENE, Benzene |
| Nov 2, 2007 | Oklahoma | Compliance order with a penalty | 1 violation: Nitrate-Nitrite |
| Sep 14, 2007 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Jul 24, 2007 | Oklahoma | Compliance order with a penalty | 1 violation: Nitrate-Nitrite |
| Jul 19, 2007 | Oklahoma | Compliance order (no penalty) | 36 violations (36 health-based): Total Trihalomethanes (TTHMs) |
| Jun 19, 2007 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| May 29, 2007 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Feb 20, 2007 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Dec 8, 2006 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Oct 3, 2006 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Aug 8, 2006 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Apr 11, 2006 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Jan 25, 2006 | Oklahoma | Compliance order with a penalty | 2 violations (2 health-based): Total Trihalomethanes (TTHMs) |
| Sep 7, 2005 | Oklahoma | Compliance order with a penalty | 2 violations (2 health-based): Total Trihalomethanes (TTHMs) |
| Apr 28, 2005 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| Aug 9, 2004 | Oklahoma | Compliance order with a penalty | 2 violations (1 health-based): Nitrate-Nitrite |
| Sep 30, 1988 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Nitrate |
| Sep 30, 1987 | Oklahoma | Compliance order (no penalty) | 2 violations (2 health-based): Nitrate |
| Sep 30, 1986 | Oklahoma | Compliance order (no penalty) | 2 violations (2 health-based): Nitrate |
What the violations mean
Nitrate-Nitrite
35 incidentsTest results for Nitrate-Nitrite were above the federal limit (a maximum contaminant level violation).
The utility had to notify customers about each of these violations.
Total Trihalomethanes (TTHMs)
25 incidentsDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
Where the water comes from
Grandfield draws water from 7 wells. It also buys water from Frederick. 2 other community water systems buy water from Grandfield.
Buys water from
- Frederick Frederick, OK
Community systems that buy water from it
- Devol Devol, OK
- Randlett PWA Randlett, OK
Annual water quality report
Grandfield 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.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
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 Oklahoma.
Certified drinking water labs by state EPA guidance for private wells