Public water system · OK3004710
ActiveBlanchard
At a glance
Blanchard (PWSID OK3004710) is an active community water system in McClain County, Oklahoma. It reports serving 2,966 people through 2,868 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in October 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,966
Service connections
2,868
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Blanchard compare with other water systems in McClain County?
By EPA's size categories, Blanchard is a small system (501 to 3,300 people). McClain County has 14 active public water systems, and Blanchard is the 3rd-largest of them by population served. Its population served is about 70% above the county average of 1,745 people per system, and accounts for 12% of the 24,436 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 Blanchard is about 56% below 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 299 Oklahoma systems (24%) list purchased surface water as their primary source.
Who owns and regulates Blanchard?
EPA lists Blanchard 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 14 active systems in McClain County (79%) are also owned by a local government.
Does Blanchard have drinking water violations?
Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in October 2024. The violations listed here began between January 2015 and October 2024. By type: 5 disinfectant level above the legal limit, 4 monitoring and reporting, 1 required treatment not met, 1 reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Chlorine (5 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 |
|---|---|---|---|---|
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Resolved |
| 2024-10-17 | ReportingLSL Reporting · code 4G | Lead and Copper Rule Revisionscode 5200 | No | Resolved |
| 2018-04-01 | Disinfectant level above the legal limitNon-Acute MRDL · code 11 | Chlorinecode 0999 | Yes | Resolved |
| 2018-01-01 | Disinfectant level above the legal limitNon-Acute MRDL · code 11 | Chlorinecode 0999 | Yes | Resolved |
| 2017-10-01 | Disinfectant level above the legal limitNon-Acute MRDL · code 11 | Chlorinecode 0999 | Yes | Resolved |
| 2017-07-01 | Disinfectant level above the legal limitNon-Acute MRDL · code 11 | Chlorinecode 0999 | Yes | Resolved |
| 2017-04-01 | Disinfectant level above the legal limitNon-Acute MRDL · code 11 | Chlorinecode 0999 | Yes | Resolved |
| 2015-09-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2015-09-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2015-05-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2015-05-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2015-01-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | 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.
Blanchard: frequently asked questions
Who runs Blanchard?
Blanchard (PWSID OK3004710) is a community water system owned by a local government. It is regulated by the OK state drinking water program.
How many people does Blanchard serve?
Blanchard reports serving 2,966 people through 2,868 service connections in McClain County, Oklahoma.
Where does Blanchard get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Blanchard have any drinking water violations?
Of the 12 most recent violations in EPA's records, 7 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 Blanchard'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, 7 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 Blanchard's water quality report?
As a community water system, Blanchard 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 McClain County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Newcastle | McClain | 7,900 | Community | Purchased surface water |
| Purcell | McClain | 6,693 | Community | Groundwater |
| Goldsby Water Auth Trust | McClain | 2,000 | Community | Groundwater |
| Mcclain Co Rwd # 8 | McClain | 1,897 | Community | Groundwater |
| Wayne | McClain | 688 | Community | Groundwater |
| Washington | McClain | 600 | 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, “Blanchard, PWSID OK3004710, Oklahoma”, https://aquacensus.com/water-systems/oklahoma/blanchard-ok3004710 (data as of October 1, 2026).