Public water system record
Hollis
Serves an area of Harmon County, OK that includes Hollis · 2,264 people served
Federal records show 11 health-based violations and 3 monitoring/reporting issues for Hollis in the last ten years. The most serious issue in this window was a resolved Nitrate-Nitrite violation.
System profile
Source water
Groundwater
ZIP
73550
EPA system ID
OK2002901
- Health-based violations, last 10 years
- 11
- Resolved
- 11
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 3
Key facts
- Hollis draws water from 5 wells.
- Most recent formal enforcement: compliance order (no penalty) by Oklahoma, September 2024.
- Record on file since 1991, with 97 health-based violations before October 19, 2016.
- Lead pipe inventory: 1 lead and 943 unknown out of 957 service lines.
Check whether Hollis 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 | Jul 1, 2024 | Resolved | Yes |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jul 1, 2020 | Resolved | Yes |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Oct 1, 2018 | Resolved | Yes |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jul 1, 2018 | Resolved | Yes |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Apr 1, 2018 | Resolved | Yes |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jan 1, 2018 | Resolved | Yes |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Oct 1, 2017 | Resolved | Yes |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jul 1, 2017 | Resolved | Yes |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Apr 1, 2017 | Resolved | Yes |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jan 1, 2017 | Resolved | Yes |
|
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 |
|---|---|---|
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2024 | Active |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
Full record since 1991
EPA's records for Hollis go back to 1991. Before October 19, 2016 they list 97 health-based violations (96 resolved, 1 archived by EPA without a recorded fix) and 6 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 28 | 0 |
| 2000s | 44 | 3 |
| 2010 to October 18, 2016 | 25 | 3 |
| October 19, 2016 to 2019 | 8 | 0 |
| 2020s | 2 | 3 |
Most recent health-based violation before October 19, 2016: Nitrate-Nitrite (acute), began October 2016, Resolved.
Show all 97 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Oct 1, 2016 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Apr 1, 2016 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2016 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Oct 1, 2015 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jul 1, 2015 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Apr 1, 2015 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Oct 1, 2014 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jul 1, 2014 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2014 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jul 1, 2013 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Apr 1, 2013 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2013 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Oct 1, 2012 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jul 1, 2012 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2012 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2012 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 2011 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Dec 1, 2011 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Oct 1, 2011 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jul 1, 2011 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Apr 1, 2011 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2011 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Oct 1, 2010 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jul 1, 2010 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Apr 1, 2010 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jul 1, 2009 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
May 1, 2009 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 2009 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Apr 1, 2009 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2009 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Oct 1, 2008 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jul 1, 2008 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2008 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Oct 1, 2007 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jul 1, 2007 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Apr 1, 2007 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2007 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Oct 1, 2006 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jul 1, 2006 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Apr 1, 2006 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Apr 1, 2006 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2006 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2006 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Oct 1, 2005 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Oct 1, 2005 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jul 1, 2005 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jul 1, 2005 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Apr 1, 2005 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2005 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Oct 1, 2004 | Resolved |
47 older violations are not listed here. EPA ECHO has the complete list.
Enforcement actions
Oklahoma regulators took 28 formal enforcement actions against Hollis and issued 3 boil water orders between 1994 and 2024, filed as 32 records in EPA's data. The most recent was a compliance order (no penalty) in September 2024.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Sep 27, 2024 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Nitrate-Nitrite |
| Nov 15, 2012 | Oklahoma | Compliance order with a penalty | 97 violations (97 health-based): Nitrate-Nitrite, Nitrate |
| Dec 12, 2011 | Oklahoma | Boil water order | 1 violation (1 health-based): Total Coliform |
| Sep 2, 2010 | Oklahoma | Compliance order with a penalty | 62 violations (60 health-based): Nitrate, Nitrate-Nitrite |
| Jun 10, 2010 | Oklahoma | Compliance order with a penalty | 2 violations: Nitrate-Nitrite |
| May 8, 2009 | Oklahoma | Boil water order | 1 violation (1 health-based): Total Coliform |
| Jul 9, 2008 | Oklahoma | Compliance order with a penalty | 80 violations (78 health-based): Nitrate-Nitrite, Nitrate |
| Sep 14, 2007 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| Jul 23, 2007 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| Apr 16, 2007 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| Dec 13, 2006 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| Sep 26, 2006 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| Jul 21, 2006 | Oklahoma | Compliance order with a penalty | 2 violations (2 health-based): Nitrate-Nitrite |
| Apr 3, 2006 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| Sep 1, 2005 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| Jul 6, 2005 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| Jun 8, 2005 | Oklahoma | Compliance order with a penalty | 50 violations (50 health-based): Nitrate, Nitrate-Nitrite |
| Feb 18, 2005 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| Jan 11, 2005 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| Aug 17, 2004 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| May 4, 2004 | Oklahoma | Compliance order with a penalty | 40 violations (40 health-based): Nitrate, Nitrate-Nitrite |
| Nov 6, 2003 | Oklahoma | Compliance order with a penalty | 2 violations (2 health-based): Nitrate-Nitrite |
| Aug 28, 2003 | Oklahoma | Compliance order with a penalty | 51 violations (49 health-based): Nitrate-Nitrite, Nitrate |
| Dec 3, 2002 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate |
| Sep 11, 2002 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate |
| Apr 30, 2001 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate |
| Jan 26, 2000 | Oklahoma | Compliance order with a penalty | 25 violations (25 health-based): Nitrate |
| Mar 20, 1996 | Oklahoma | Compliance order (no penalty) | 16 violations (16 health-based): Nitrate |
| Nov 8, 1995 | Oklahoma | Boil water order | 1 violation |
| Sep 23, 1994 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Nitrate |
| May 2, 1994 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Nitrate |
What the violations mean
Nitrate-Nitrite
11 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.
Where the water comes from
Hollis draws water from 5 wells.
Annual water quality report
Hollis 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