HARRISON, OH · Hamilton County
TWIN RIVERS WATER CORPORATION Water System
Consumer Confidence Report status
TWIN RIVERS WATER CORPORATION must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show 1 item for TWIN RIVERS WATER CORPORATION that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Ohio’s official records. Always confirm current status with Ohio before making decisions based on this information.
System facts
- System ID (PWSID)
- OH3102303
- System type
- Community Water System
- Population served
- 245
- Service connections
- 96
- Ownership
- privately owned
- Water source
- groundwater (wells)
TWIN RIVERS WATER CORPORATION is one of 1,399 community water systems in Ohio in the 500 or fewer people size category, serving 245 people from groundwater.
As of August 1, 2026, its federal record holds 9 entries between 1996 and 2025, of which 1 remains open; none are health-based.
Of the 9, 7 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves the Total Coliform Rules, the Lead and Copper Rule, and the Consumer Confidence Rule.
Violation history
Notification, Known or Potential LSL
—LEAD AND COPPER RULE REVISIONS
July 2, 2025 – December 22, 2025
ResolvedConsumer Confidence Report Inadequate Reporting
—Consumer Confidence Rule
December 13, 2018
UnaddressedMonitoring and Reporting (DBP)
—Total Haloacetic Acids (HAA5)
January 1, 2009 – December 31, 2009
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
July 1, 2003 – September 30, 2003
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
September 1, 2000 – September 30, 2000
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
November 1, 1999 – November 30, 1999
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
February 1, 1997 – February 28, 1997
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
September 1, 1996 – September 30, 1996
ResolvedFollow-up Or Routine LCR Tap M/R
—Lead and Copper Rule
January 1, 1996 – May 13, 1997
Resolved
Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yet
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| July 2, 2025 – December 22, 2025 | Notification, Known or Potential LSL | LEAD AND COPPER RULE REVISIONS | — | Resolved |
| December 13, 2018 | Consumer Confidence Report Inadequate Reporting | Consumer Confidence Rule | — | Unaddressed |
| January 1, 2009 – December 31, 2009 | Monitoring and Reporting (DBP) | Total Haloacetic Acids (HAA5) | — | Resolved |
| July 1, 2003 – September 30, 2003 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| September 1, 2000 – September 30, 2000 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| November 1, 1999 – November 30, 1999 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| February 1, 1997 – February 28, 1997 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| September 1, 1996 – September 30, 1996 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| January 1, 1996 – May 13, 1997 | Follow-up Or Routine LCR Tap M/R | Lead and Copper Rule | — | Resolved |
Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yet
Enforcement actions
- December 22, 2025State Compliance achieved1 linked violation
- October 21, 2025State Public Notification requested1 linked violation
- October 21, 2025State Violation/Reminder Notice1 linked violation
- December 14, 2018State Violation/Reminder Notice1 linked violation
- September 23, 2016State Compliance achieved1 linked violation
- January 8, 2016State Public Notification received1 linked violation
- December 7, 2015State Public Notification requested1 linked violation
- December 7, 2015State Violation/Reminder Notice1 linked violation
- April 19, 2007State Compliance achieved14 linked violations
- February 10, 2000State Public Notification received20 linked violations
- September 20, 1988State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
- August 18, 1988State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
- March 17, 1988State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
- December 17, 1987State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
Common questions
Is TWIN RIVERS WATER CORPORATION required to publish a Consumer Confidence Report?
- Yes. TWIN RIVERS WATER CORPORATION is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is TWIN RIVERS WATER CORPORATION’s next Consumer Confidence Report due?
- TWIN RIVERS WATER CORPORATION’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does TWIN RIVERS WATER CORPORATION have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show 1 item for TWIN RIVERS WATER CORPORATION that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
WESTERFIELD, PEGGY
513-367-2835
HARRISON, OH 45030