Public water system · OK1010821
ActiveChickasha Municipal Authority
At a glance
Chickasha Municipal Authority (PWSID OK1010821) is an active community water system in Grady County, Oklahoma. It reports serving 16,036 people through 7,028 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, 8 are health-based, and the most recent began in October 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
16,036
Service connections
7,028
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Chickasha Municipal Authority compare with other water systems in Grady County?
By EPA's size categories, Chickasha Municipal Authority is a large system (10,001 to 100,000 people). Grady County has 29 active public water systems, and Chickasha Municipal Authority is the largest of them by population served. Its population served is about 15 times the county average of 1,045 people per system, and accounts for 53% 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 community water system reports serving 6,703 people, so Chickasha Municipal Authority is about 139% above 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 Chickasha Municipal Authority?
EPA lists Chickasha Municipal Authority 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. 11 of the 29 active systems in Grady County (38%) are also owned by a local government.
Does Chickasha Municipal Authority have drinking water violations?
Of the 12 most recent violations in EPA's records, 8 are health-based, and the most recent began in October 2024. The violations listed here began between September 2021 and October 2024. By type: 8 required treatment not met, 1 reporting, 1 monitoring, 1 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Interim Enhanced Surface Water Treatment Rule (6 of them). EPA lists 6 as resolved, 4 as archived and 2 as addressed. 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. 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. Addressed means the violation is not resolved or archived and is covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2024-10-17 | ReportingLSL Reporting · code 4G | Lead and Copper Rule Revisionscode 5200 | No | Addressed |
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Addressed |
| 2024-03-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2023-10-02 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2023-09-01 | Required treatment not metMonthly Turbidity Exceed (Enhanced SWTR) · code 44 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Archived |
| 2023-09-01 | Required treatment not metSingle Turbidity Exceed (Enhanced SWTR) · code 43 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Archived |
| 2023-08-01 | Required treatment not metMonthly Turbidity Exceed (Enhanced SWTR) · code 44 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Archived |
| 2023-08-01 | Required treatment not metSingle Turbidity Exceed (Enhanced SWTR) · code 43 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Archived |
| 2022-08-01 | Required treatment not metMonthly Turbidity Exceed (Enhanced SWTR) · code 44 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Resolved |
| 2021-09-01 | Required treatment not metMonthly Turbidity Exceed (Enhanced SWTR) · code 44 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Resolved |
| 2021-09-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | 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.
Chickasha Municipal Authority: frequently asked questions
Who runs Chickasha Municipal Authority?
Chickasha Municipal Authority (PWSID OK1010821) is a community water system owned by a local government. It is regulated by the OK state drinking water program.
How many people does Chickasha Municipal Authority serve?
Chickasha Municipal Authority reports serving 16,036 people through 7,028 service connections in Grady County, Oklahoma.
Where does Chickasha Municipal Authority 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 Chickasha Municipal Authority have any drinking water violations?
Of the 12 most recent violations in EPA's records, 8 are health-based, and the most recent began in October 2024. 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 Chickasha Municipal Authority'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, 8 are health-based, and the most recent began in October 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the OK state drinking water program.
Where can I find Chickasha Municipal Authority's water quality report?
As a community water system, Chickasha Municipal Authority 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 Grady County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| 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 |
| Bridge Creek School | Grady | 800 | Non-transient non-community | Groundwater |
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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, “Chickasha Municipal Authority, PWSID OK1010821, Oklahoma”, https://aquacensus.com/water-systems/oklahoma/chickasha-municipal-authority-ok1010821 (data as of October 1, 2026).