GROVE, OK · Delaware County
GROVE MUNICIPAL SERVICES AUTH. Water System
Consumer Confidence Report status
GROVE MUNICIPAL SERVICES AUTH. 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 GROVE MUNICIPAL SERVICES AUTH. 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 Oklahoma’s official records. Always confirm current status with Oklahoma before making decisions based on this information.
System facts
- System ID (PWSID)
- OK1021614
- System type
- Community Water System
- Population served
- 7,311
- Service connections
- 6,498
- Ownership
- local government
- Water source
- surface water (rivers, lakes, or reservoirs)
GROVE MUNICIPAL SERVICES AUTH. is one of 106 community water systems in Oklahoma in the 3,301 to 10,000 people size category, serving 7,311 people from surface water.
As of August 1, 2026, its federal record holds 28 entries between 1991 and 2025, of which 1 remains open; none are health-based.
Of the 28, 23 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 volatile organic chemicals, the Surface Water Treatment Rules, and the Total Coliform Rules.
Violation history
Failure Submit IDSE/Subpart V Plan Rpt
—TTHM
December 30, 2025
UnaddressedTreatment Technique (SWTR and GWR)
Health-basedSurface Water Treatment Rule
December 1, 2023 – December 31, 2023
ArchivedMonitoring, Regular
—Styrene
January 1, 2023 – December 31, 2025
ArchivedMonitoring, Regular
—p-Dichlorobenzene
January 1, 2023 – December 31, 2025
ArchivedMonitoring, Regular
—Vinyl chloride
January 1, 2023 – December 31, 2025
ArchivedMonitoring, Regular
—1,1-Dichloroethylene
January 1, 2023 – December 31, 2025
ArchivedMonitoring, Regular
—1,2-Dichloroethane
January 1, 2023 – December 31, 2025
ArchivedMonitoring, Regular
—Carbon tetrachloride
January 1, 2023 – December 31, 2025
ArchivedMonitoring, Regular
—Tetrachloroethylene
January 1, 2023 – December 31, 2025
ArchivedMonitoring, Regular
—CHLOROBENZENE
January 1, 2023 – December 31, 2025
ArchivedMonitoring, Regular
—Benzene
January 1, 2023 – December 31, 2025
ArchivedMonitoring, Regular
—Ethylbenzene
January 1, 2023 – December 31, 2025
ArchivedMonitoring, Regular
—1,2,4-Trichlorobenzene
January 1, 2023 – December 31, 2025
ArchivedMonitoring, Regular
—cis-1,2-Dichloroethylene
January 1, 2023 – December 31, 2025
ArchivedMonitoring, Regular
—Xylenes, Total
January 1, 2023 – December 31, 2025
ArchivedMonitoring, Regular
—DICHLOROMETHANE
January 1, 2023 – December 31, 2025
ArchivedMonitoring, Regular
—o-Dichlorobenzene
January 1, 2023 – December 31, 2025
ArchivedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2021 – September 28, 2022
ResolvedFailure Submit IDSE/Subpart V Plan Rpt
—TTHM
September 29, 2018 – December 14, 2018
ResolvedMonitoring, Turbidity (Enhanced SWTR)
—Interim Enhanced Surface Water Treatment Rule
June 1, 2016 – June 30, 2016
ResolvedMonthly Turbidity Exceed (Enhanced SWTR)
Health-basedInterim Enhanced Surface Water Treatment Rule
June 1, 2016 – June 30, 2016
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
March 1, 2015 – March 31, 2015
ResolvedMonthly Turbidity Exceed (Enhanced SWTR)
Health-basedInterim Enhanced Surface Water Treatment Rule
August 1, 2013 – August 31, 2013
ResolvedMonitoring, Regular
—Glyphosate
January 1, 2011 – December 31, 2013
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
July 1, 2007 – July 31, 2007
ResolvedMonitoring, Regular
—Nitrate-Nitrite
January 1, 2007 – December 31, 2007
ResolvedMonitoring of Treatment (SWTR-Filter)
—Surface Water Treatment Rule
September 1, 1999 – September 30, 1999
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
September 1, 1991 – September 30, 1991
Resolved
Unaddressed no corrective action on record yetArchived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| December 30, 2025 | Failure Submit IDSE/Subpart V Plan Rpt | TTHM | — | Unaddressed |
| December 1, 2023 – December 31, 2023 | Treatment Technique (SWTR and GWR) | Surface Water Treatment Rule | Health-based | Archived |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Styrene | — | Archived |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | p-Dichlorobenzene | — | Archived |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Vinyl chloride | — | Archived |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | 1,1-Dichloroethylene | — | Archived |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | 1,2-Dichloroethane | — | Archived |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Carbon tetrachloride | — | Archived |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Tetrachloroethylene | — | Archived |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | CHLOROBENZENE | — | Archived |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Benzene | — | Archived |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Ethylbenzene | — | Archived |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | 1,2,4-Trichlorobenzene | — | Archived |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | cis-1,2-Dichloroethylene | — | Archived |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Xylenes, Total | — | Archived |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | DICHLOROMETHANE | — | Archived |
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | o-Dichlorobenzene | — | Archived |
| July 1, 2021 – September 28, 2022 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| September 29, 2018 – December 14, 2018 | Failure Submit IDSE/Subpart V Plan Rpt | TTHM | — | Resolved |
| June 1, 2016 – June 30, 2016 | Monitoring, Turbidity (Enhanced SWTR) | Interim Enhanced Surface Water Treatment Rule | — | Resolved |
| June 1, 2016 – June 30, 2016 | Monthly Turbidity Exceed (Enhanced SWTR) | Interim Enhanced Surface Water Treatment Rule | Health-based | Resolved |
| March 1, 2015 – March 31, 2015 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| August 1, 2013 – August 31, 2013 | Monthly Turbidity Exceed (Enhanced SWTR) | Interim Enhanced Surface Water Treatment Rule | Health-based | Resolved |
| January 1, 2011 – December 31, 2013 | Monitoring, Regular | Glyphosate | — | Resolved |
| July 1, 2007 – July 31, 2007 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | Nitrate-Nitrite | — | Resolved |
| September 1, 1999 – September 30, 1999 | Monitoring of Treatment (SWTR-Filter) | Surface Water Treatment Rule | — | Resolved |
| September 1, 1991 – September 30, 1991 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
Unaddressed no corrective action on record yetArchived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state
Enforcement actions
- February 19, 2026State Public Notification requested22 linked violations
- February 19, 2026State Violation/Reminder Notice22 linked violations
- February 19, 2026State Violation/Reminder Notice22 linked violations
- June 20, 2025State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
- April 15, 2025State Compliance achievedgeneral compliance action — not tied to a specific violation on record
- March 6, 2025State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
- March 6, 2025State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
- March 27, 2024State Public Notification received1 linked violation
- March 1, 2024State Administrative/Compliance Order without penalty issued1 linked violation
- March 1, 2024State Public Notification requested1 linked violation
- September 28, 2022State Compliance achieved1 linked violation
- January 21, 2022State Violation/Reminder Notice1 linked violation
- November 13, 2019State Public Notification received1 linked violation
- March 14, 2019State Compliance achieved1 linked violation
- December 14, 2018State Compliance achieved1 linked violation
- November 30, 2018State Violation/Reminder Notice1 linked violation
- July 3, 2018State Compliance achieved1 linked violation
- March 20, 2018State Public Notification received1 linked violation
- March 16, 2018State Compliance achieved1 linked violation
- March 5, 2018State Administrative/Compliance Order with penalty issued1 linked violation
- March 5, 2018State Public Notification requested1 linked violation
- October 13, 2017State Compliance achieved1 linked violation
- July 14, 2017State Public Notification received1 linked violation
- July 7, 2017State Administrative/Compliance Order with penalty issued1 linked violation
- July 7, 2017State Public Notification requested1 linked violation
- March 7, 2017State Violation/Reminder Notice2 linked violations
- March 7, 2017State Public Notification requested2 linked violations
- July 26, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
- July 26, 2016State Compliance achieved1 linked violation
- July 26, 2016State Compliance achieved1 linked violation
- July 26, 2016State Compliance achieved1 linked violation
- July 26, 2016State Compliance achieved1 linked violation
- July 26, 2016State Compliance achieved1 linked violation
- July 26, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
- July 26, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
- July 26, 2016State Compliance achievedgeneral compliance action — not tied to a specific violation on record
- May 6, 2016State Public Notification received1 linked violation
- April 24, 2015State Violation/Reminder Notice1 linked violation
- April 24, 2015State Public Notification requested1 linked violation
- March 31, 2015State Compliance achieved1 linked violation
- January 6, 2015State no longer subject to Rule1 linked violation
- November 25, 2013State Compliance achieved1 linked violation
- November 25, 2013State Public Notification received1 linked violation
- November 4, 2013State Public Notification requested1 linked violation
- November 4, 2013State Administrative/Compliance Order with penalty issued1 linked violation
- September 23, 2009State Compliance achieved1 linked violation
- May 29, 2009State Public Notification received1 linked violation
- May 18, 2009State Administrative/Compliance Order with penalty issued1 linked violation
- May 18, 2009State Public Notification requested1 linked violation
- August 28, 2007State Compliance achieved1 linked violation
- August 28, 2007State Public Notification received1 linked violation
- June 1, 2004State Public Notification received4 linked violations
- May 12, 2004State Public Notification requested2 linked violations
- November 13, 2003State Administrative/Compliance Order with penalty issued1 linked violation
Common questions
Is GROVE MUNICIPAL SERVICES AUTH. required to publish a Consumer Confidence Report?
- Yes. GROVE MUNICIPAL SERVICES AUTH. 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 GROVE MUNICIPAL SERVICES AUTH.’s next Consumer Confidence Report due?
- GROVE MUNICIPAL SERVICES AUTH.’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does GROVE MUNICIPAL SERVICES AUTH. have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show 1 item for GROVE MUNICIPAL SERVICES AUTH. 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
GROVE MUNICIPAL SERVICES AUTHORITY
918-786-6107
GROVE, OK 74344