Public water system record
Wellston
Serves an area of Lincoln County, OK that includes Wellston and Chandler · 825 people served
Federal records show 20 health-based violations and 18 monitoring/reporting issues for Wellston in the last ten years. The most serious issue in this window was a resolved LEAD AND COPPER RULE REVISIONS violation.
System profile
Source water
Surface water
ZIP
74881
EPA system ID
OK1020724
- Health-based violations, last 10 years
- 20
- Resolved
- 20
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 18
Key facts
- Wellston draws water from 1 surface water intake.
- Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.101 mg/L, federal limit 0.08 mg/L (1.3 times the limit), 2017.
- Most recent formal enforcement: compliance order with a penalty by Oklahoma, November 2023.
- Record on file since 2004, with 26 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 412 unknown out of 420 service lines.
Check whether Wellston 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 |
|---|---|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
|
350 | Oct 17, 2024 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.084 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Oct 1, 2023 | Resolved | No |
|
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, 2023 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Apr 1, 2023 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.096 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Jan 1, 2023 | 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 | Oct 1, 2022 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.083 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
220 | Apr 1, 2021 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
220 | Oct 1, 2019 | Resolved | No |
|
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, 2019 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.087 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 0.088 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Jan 1, 2019 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.087 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Oct 1, 2018 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.085 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Jul 1, 2018 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.093 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Apr 1, 2018 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.095 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Jan 1, 2018 | 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 | Oct 1, 2017 | Resolved | No |
|
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, 2017 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.093 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Apr 1, 2017 | Resolved | No |
|
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, 2017 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.083 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
220 | Oct 1, 2016 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Sep 29, 2023 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
OTHER
|
Dec 1, 2015 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
OTHER
|
Nov 1, 2015 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
OTHER
|
Oct 1, 2015 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
OTHER
|
Sep 1, 2015 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
OTHER
|
Aug 1, 2015 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
OTHER
|
Jul 1, 2015 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2015 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
OTHER
|
Jun 1, 2015 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
OTHER
|
May 1, 2015 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
OTHER
|
Apr 1, 2015 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
OTHER
|
Mar 1, 2015 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
OTHER
|
Feb 1, 2015 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
OTHER
|
Jan 1, 2015 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2014 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2013 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2012 | Resolved |
Full record since 2004
EPA's records for Wellston go back to 2004. Before October 19, 2016 they list 26 health-based violations (26 resolved) and 131 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2000s | 23 | 64 |
| 2010 to October 18, 2016 | 3 | 67 |
| October 19, 2016 to 2019 | 12 | 0 |
| 2020s | 7 | 2 |
Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began October 2016, Resolved.
Show all 26 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.083 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
Oct 1, 2016 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
Jul 1, 2016 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
Jan 1, 2012 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.098 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
Apr 1, 2009 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.098 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
Jan 1, 2009 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.099 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
Oct 1, 2008 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.099 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
Jul 1, 2008 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.123 mg/L, federal limit 0.06 mg/L (2.1 times the limit)
|
Jan 1, 2008 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.112 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
|
Jan 1, 2008 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.175 mg/L, federal limit 0.06 mg/L (2.9 times the limit)
|
Oct 1, 2007 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.171 mg/L, federal limit 0.08 mg/L (2.1 times the limit)
|
Oct 1, 2007 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Oct 1, 2007 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Jul 1, 2007 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.175 mg/L, federal limit 0.06 mg/L (2.9 times the limit)
|
Jul 1, 2007 | 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, 2007 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.116 mg/L, federal limit 0.08 mg/L (1.5 times the limit)
|
Apr 1, 2007 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Apr 1, 2007 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.092 mg/L, federal limit 0.06 mg/L (1.5 times the limit)
|
Apr 1, 2007 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Jan 1, 2007 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Oct 1, 2006 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Jul 1, 2006 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Apr 1, 2006 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Jan 1, 2006 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Oct 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)
|
Oct 1, 2004 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.085 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Jul 1, 2004 | Resolved |
Enforcement actions
Oklahoma regulators took 43 formal enforcement actions against Wellston between 2004 and 2023. The most recent was a compliance order with a penalty in November 2023.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Nov 28, 2023 | Oklahoma | Compliance order with a penalty | 5 violations (5 health-based): Total Trihalomethanes (TTHMs) |
| Sep 25, 2023 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Jun 20, 2023 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Mar 22, 2023 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Jan 3, 2023 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Aug 26, 2019 | Oklahoma | Compliance order with a penalty | 16 violations (15 health-based): Total Trihalomethanes (TTHMs) |
| Mar 6, 2019 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Jan 2, 2019 | Oklahoma | Compliance order (no penalty) | 2 violations (2 health-based): Total Trihalomethanes (TTHMs) |
| Jun 4, 2018 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Feb 26, 2018 | Oklahoma | Compliance order with a penalty | 2 violations (2 health-based): Total Trihalomethanes (TTHMs) |
| Oct 6, 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 | 2 violations (2 health-based): Total Trihalomethanes (TTHMs) |
| Jan 12, 2017 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Apr 23, 2012 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Jul 30, 2009 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Apr 2, 2009 | Oklahoma | Compliance order with a penalty | 2 violations: Arsenic |
| Feb 10, 2009 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Feb 3, 2009 | Oklahoma | Compliance order with a penalty | 70 violations (22 health-based): Interim Enhanced Surface Water Treatment Rule, Total Trihalomethanes (TTHMs), CARBON, TOTAL, Haloacetic Acids (HAA5), Arsenic |
| Nov 20, 2008 | Oklahoma | Compliance order with a penalty | 5 violations (1 health-based): Total Trihalomethanes (TTHMs), Interim Enhanced Surface Water Treatment Rule |
| Nov 6, 2008 | Oklahoma | Compliance order with a penalty | 9 violations: Interim Enhanced Surface Water Treatment Rule |
| Aug 5, 2008 | Oklahoma | Compliance order with a penalty | 2 violations (2 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
| Jun 26, 2008 | Oklahoma | Compliance order with a penalty | 1 violation: Arsenic |
| Mar 25, 2008 | Oklahoma | Compliance order with a penalty | 2 violations: Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
| Mar 12, 2008 | Oklahoma | Compliance order with a penalty | 3 violations (3 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs), CARBON, TOTAL |
| Jan 3, 2008 | Oklahoma | Compliance order with a penalty | 3 violations (3 health-based): Haloacetic Acids (HAA5), CARBON, TOTAL, Total Trihalomethanes (TTHMs) |
| Oct 11, 2007 | Oklahoma | Compliance order with a penalty | 3 violations (3 health-based): CARBON, TOTAL, Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
| Aug 14, 2007 | Oklahoma | Compliance order with a penalty | 2 violations: Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
| Aug 8, 2007 | Oklahoma | Compliance order with a penalty | 4 violations: Interim Enhanced Surface Water Treatment Rule |
| May 9, 2007 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): CARBON, TOTAL |
| Apr 23, 2007 | Oklahoma | Compliance order with a penalty | 2 violations: Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
| Apr 18, 2007 | Oklahoma | Compliance order with a penalty | 4 violations: Interim Enhanced Surface Water Treatment Rule |
| Feb 27, 2007 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): CARBON, TOTAL |
| Dec 6, 2006 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): CARBON, TOTAL |
| Oct 5, 2006 | Oklahoma | Compliance order with a penalty | 2 violations: Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
| Oct 3, 2006 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): CARBON, TOTAL |
| Sep 8, 2006 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): CARBON, TOTAL |
| Apr 7, 2006 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): CARBON, TOTAL |
| Jan 10, 2006 | Oklahoma | Compliance order with a penalty | 1 violation: Chlorine |
| Dec 29, 2005 | Oklahoma | Compliance order with a penalty | 1 violation: CARBON, TOTAL |
| Sep 7, 2005 | Oklahoma | Compliance order with a penalty | 1 violation: CARBON, TOTAL |
| Apr 19, 2005 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Dec 29, 2004 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
What the violations mean
Total Trihalomethanes (TTHMs)
19 incidentsDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
LEAD AND COPPER RULE REVISIONS
1 incidentThe system did not complete a treatment step or action that the LEAD AND COPPER RULE REVISIONS requires (a treatment technique violation).
The utility had to notify customers about this violation.
Where the water comes from
Wellston draws water from 1 surface water intake.
Annual water quality report
Wellston 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