Public water system · OK1021614
ActiveGrove Municipal Services Auth.
At a glance
Grove Municipal Services Auth. (PWSID OK1021614) is an active community water system in Delaware County, Oklahoma. It reports serving 7,311 people through 6,498 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in December 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
7,311
Service connections
6,498
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Grove Municipal Services Auth. compare with other water systems in Delaware County?
By EPA's size categories, Grove Municipal Services Auth. is a medium system (3,301 to 10,000 people). Delaware County has 35 active public water systems, and Grove Municipal Services Auth. is the largest of them by population served. Its population served is about 10 times the county average of 714 people per system, and accounts for 29% of the 24,973 people reported by systems filed under the county. Across Oklahoma, the 1,254 active systems average 2,907 people each. Nationally, the average active community water system reports serving 6,703 people, so Grove Municipal Services Auth. is roughly in line with that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Oklahoma has 864 active community water systems, 69% of the state's 1,254 active systems. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 175 Oklahoma systems (14%) list surface water as their primary source.
Who owns and regulates Grove Municipal Services Auth.?
EPA lists Grove Municipal Services Auth. as owned by a local government. The OK state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 13 of the 35 active systems in Delaware County (37%) are also owned by a local government.
Does Grove Municipal Services Auth. have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in December 2025. The violations listed here began between January 2023 and December 2025. By type: 11 monitoring and reporting and 1 required treatment not met. The contaminants or rules involved are Total trihalomethanes (TTHM), Surface Water Treatment Rule, Dichloromethane and Chlorobenzene. EPA lists 11 as archived and 1 as unaddressed. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-12-30 | Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35 | Total trihalomethanes (TTHM)code 2950 | No | Unaddressed |
| 2023-12-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Archived |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dichloromethanecode 2964 | No | Archived |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chlorobenzenecode 2989 | No | Archived |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Trichloroethylenecode 2984 | No | Archived |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Ethylbenzenecode 2992 | No | Archived |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Tetrachloroethylenecode 2987 | No | Archived |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Xylenes, Totalcode 2955 | No | Archived |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | trans-1,2-Dichloroethylenecode 2979 | No | Archived |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,2-Trichloroethanecode 2985 | No | Archived |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloropropanecode 2983 | No | Archived |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2,4-Trichlorobenzenecode 2378 | No | Archived |
The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Grove Municipal Services Auth.: frequently asked questions
Who runs Grove Municipal Services Auth.?
Grove Municipal Services Auth. (PWSID OK1021614) is a community water system owned by a local government. It is regulated by the OK state drinking water program.
How many people does Grove Municipal Services Auth. serve?
Grove Municipal Services Auth. reports serving 7,311 people through 6,498 service connections in Delaware County, Oklahoma.
Where does Grove Municipal Services Auth. get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Grove Municipal Services Auth. have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in December 2025. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Grove Municipal Services Auth.'s water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in December 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the OK state drinking water program.
Where can I find Grove Municipal Services Auth.'s water quality report?
As a community water system, Grove Municipal Services Auth. must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Delaware County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Grand Lake Pwa | Delaware | 2,800 | Community | Groundwater |
| Jay | Delaware | 2,482 | Community | Surface water |
| Ketchum Pwa Delaware Co System | Delaware | 1,805 | Community | Surface water |
| South Delaware Co Regional Water Auth. | Delaware | 1,500 | Community | Surface water |
| Delaware Co Rwd #10 | Delaware | 1,295 | Community | Groundwater |
| West Siloam Springs | Delaware | 877 | Community | Purchased surface water |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Grove Municipal Services Auth., PWSID OK1021614, Oklahoma”, https://aquacensus.com/water-systems/oklahoma/grove-municipal-services-auth-ok1021614 (data as of October 1, 2026).