Public water system · OK2002627
ActiveMiddleberg School
At a glance
Middleberg School (PWSID OK2002627) is an active non-transient non-community water system in Grady County, Oklahoma. It reports serving 135 people through 4 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
135
Service connections
4
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Middleberg School compare with other water systems in Grady County?
By EPA's size categories, Middleberg School is a very small system (500 people or fewer). Grady County has 29 active public water systems. Its population served is well below the county average of 1,045 people per system, and accounts for 0.4% of the 30,294 people reported by systems filed under the county. Across Oklahoma, the 1,254 active systems average 2,907 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Middleberg School is well below that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Oklahoma has 84 active non-transient non-community water systems, 6.7% of the state's 1,254 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 701 Oklahoma systems (56%) list groundwater as their primary source.
Who owns and regulates Middleberg School?
EPA lists Middleberg School as privately owned. 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. 18 of the 29 active systems in Grady County (62%) are also privately owned.
Does Middleberg School have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2025. The violations listed here began between January 2017 and January 2025. By type: 9 monitoring and reporting and 3 monitoring. The contaminant or rule involved most often is Revised Total Coliform Rule (3 of them). EPA lists 12 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Atrazinecode 2050 | No | Resolved |
| 2024-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2018-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Tetrachloroethylenecode 2987 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | cis-1,2-Dichloroethylenecode 2380 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Vinyl chloridecode 2976 | No | Resolved |
| 2017-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Carbon tetrachloridecode 2982 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dichloromethanecode 2964 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2,4-Trichlorobenzenecode 2378 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | o-Dichlorobenzenecode 2968 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1-Dichloroethylenecode 2977 | No | Resolved |
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.
Middleberg School: frequently asked questions
Who runs Middleberg School?
Middleberg School (PWSID OK2002627) is a non-transient non-community water system privately owned. It is regulated by the OK state drinking water program.
How many people does Middleberg School serve?
Middleberg School reports serving 135 people through 4 service connections in Grady County, Oklahoma.
Where does Middleberg School get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Middleberg School have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 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 Middleberg School'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, none is health-based, and the most recent began in January 2025. For current results, consult EPA ECHO, or the OK state drinking water program.
Where can I find Middleberg School's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Middleberg School is a non-transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Grady County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Chickasha Municipal Authority | Grady | 16,036 | Community | Surface water |
| Grady Co Rwd #6 | Grady | 3,930 | Community | Groundwater |
| Grady Co Rwd #7 (Ninnekah) | Grady | 2,425 | Community | Groundwater |
| Minco | Grady | 1,632 | Community | Groundwater |
| Rush Springs | Grady | 1,278 | Community | Groundwater |
| Norge Water and Sewer Co., Inc. | Grady | 890 | 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, “Middleberg School, PWSID OK2002627, Oklahoma”, https://aquacensus.com/water-systems/oklahoma/middleberg-school-ok2002627 (data as of October 1, 2026).