Public water system record
Calvin
Serves an area of Hughes County, OK that includes Calvin · 300 people served
Federal records show no health-based violations and 8 monitoring/reporting issues for Calvin in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 8
Key facts
- Calvin draws water from 3 wells.
- Most recent formal enforcement: compliance order with a penalty by Oklahoma, October 2012.
- Record on file since 1991, with 10 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 138 service lines.
Check whether Calvin 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.
None since October 2016.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2025 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 2, 2023 | Resolved |
|
Gross Beta Particle Activity
Monitoring and reporting
|
Apr 1, 2021 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Apr 1, 2021 | Resolved |
|
Combined Uranium
Monitoring and reporting
|
Apr 1, 2021 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Apr 1, 2021 | Resolved |
|
Nitrate-Nitrite
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2017 | Resolved |
Full record since 1991
EPA's records for Calvin go back to 1991. Before October 19, 2016 they list 10 health-based violations (5 resolved, 5 archived by EPA without a recorded fix) and 60 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 9 | 5 |
| 2000s | 0 | 38 |
| 2010 to October 18, 2016 | 1 | 17 |
| October 19, 2016 to 2019 | 0 | 1 |
| 2020s | 0 | 7 |
Most recent health-based violation before October 19, 2016: Total Coliform, began May 2015, Resolved.
Show all 10 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
May 1, 2015 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 1999 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 1998 | Archived |
|
Tetrachloroethylene
Contaminant limit exceeded
|
Jul 1, 1996 | Resolved |
|
Tetrachloroethylene
Contaminant limit exceeded
|
Jan 1, 1996 | Resolved |
|
Tetrachloroethylene
Contaminant limit exceeded
|
Jan 1, 1996 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Aug 1, 1993 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Oct 1, 1992 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 1991 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 1991 | Archived |
Enforcement actions
Oklahoma regulators took 7 formal enforcement actions against Calvin and issued 4 boil water orders between 1992 and 2012. The most recent was a compliance order with a penalty in October 2012.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Oct 3, 2012 | Oklahoma | Compliance order with a penalty | 3 violations: Consumer Confidence Rule |
| Apr 29, 2011 | Oklahoma | Compliance order with a penalty | 4 violations: Consumer Confidence Rule |
| Jul 25, 2008 | Oklahoma | Compliance order with a penalty | 2 violations: Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
| Mar 31, 2004 | Oklahoma | Compliance order with a penalty | 1 violation: Nitrate |
| May 16, 2002 | Oklahoma | Compliance order with a penalty | 20 violations: 1,2,4-Trichlorobenzene, cis-1,2-Dichloroethylene, DICHLOROMETHANE, o-Dichlorobenzene, p-Dichlorobenzene |
| Nov 27, 2001 | Oklahoma | Compliance order with a penalty | 1 violation: Nitrate |
| Apr 4, 1995 | Oklahoma | Boil water order | 1 violation |
| Oct 25, 1994 | Oklahoma | Boil water order | 1 violation |
| Aug 27, 1993 | Oklahoma | Boil water order | 1 violation (1 health-based): Total Coliform |
| Nov 3, 1992 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Total Coliform |
| Nov 3, 1992 | Oklahoma | Boil water order | 1 violation (1 health-based): Total Coliform |
Where the water comes from
Calvin draws water from 3 wells.
Annual water quality report
Calvin 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 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Calvin for a copy.
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