Public water system record
Cornish
Serves Cornish, Jefferson County, OK · 41 people served
Federal records show 1 health-based violation and 9 monitoring/reporting issues for Cornish in the last ten years. The most serious issue in this window was a resolved LEAD AND COPPER RULE REVISIONS violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 9
Key facts
- Cornish buys its water from Ringling.
- Most recent formal enforcement: compliance order with a penalty by Oklahoma, March 2016.
- Record on file since 2003, with 0 health-based violations before October 20, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 59 service lines.
Check whether Cornish 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 |
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 | Active |
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2017 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2017 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Aug 1, 2017 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2015 | Resolved |
Full record since 2003
EPA's records for Cornish go back to 2003. Before October 20, 2016 they list no health-based violations and 15 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2000s | 0 | 1 |
| 2010 to October 19, 2016 | 0 | 14 |
| October 20, 2016 to 2019 | 0 | 5 |
| 2020s | 1 | 2 |
Enforcement actions
Oklahoma regulators took 2 formal enforcement actions against Cornish between 2012 and 2016. The most recent was a compliance order with a penalty in March 2016.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Mar 18, 2016 | Oklahoma | Compliance order with a penalty | 2 violations: Lead and Copper Rule |
| Oct 16, 2012 | Oklahoma | Compliance order with a penalty | 3 violations: Consumer Confidence Rule |
What the violations mean
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
Cornish buys its water from Ringling. It lists no wells or intakes of its own.
Buys water from
- Ringling Ringling, OK
Annual water quality report
Cornish 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 Cornish 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