Public water system · OK2004105
ActiveLincoln Co Rw & Sewer Dist 4
At a glance
Lincoln Co Rw & Sewer Dist 4 (PWSID OK2004105) is an active community water system in Lincoln County, Oklahoma. It reports serving 2,525 people through 1,052 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, none is health-based, and the most recent began in July 2025.
This page covers its drinking water system only; sewer and wastewater service are not part of EPA's drinking water records.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,525
Service connections
1,052
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Lincoln Co Rw & Sewer Dist 4 compare with other water systems in Lincoln County?
By EPA's size categories, Lincoln Co Rw & Sewer Dist 4 is a small system (501 to 3,300 people). Lincoln County has 22 active public water systems, and Lincoln Co Rw & Sewer Dist 4 is the 3rd-largest of them by population served. Its population served is about 3.2 times the county average of 800 people per system, and accounts for 14% of the 17,590 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 Lincoln Co Rw & Sewer Dist 4 is about 62% 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 Lincoln Co Rw & Sewer Dist 4?
EPA lists Lincoln Co Rw & Sewer Dist 4 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. 16 of the 22 active systems in Lincoln County (73%) are also owned by a local government.
Does Lincoln Co Rw & Sewer Dist 4 have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2025. The violations listed here began between October 2021 and July 2025. By type: 10 monitoring and reporting and 2 public notice, recordkeeping or other. The contaminant or rule involved most often is Arsenic (4 of them). EPA lists 7 as resolved and 5 as archived. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2023-10-02 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Archived |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Archived |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Archived |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Archived |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Archived |
| 2021-10-19 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | 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.
Lincoln Co Rw & Sewer Dist 4: frequently asked questions
Who runs Lincoln Co Rw & Sewer Dist 4?
Lincoln Co Rw & Sewer Dist 4 (PWSID OK2004105) is a community water system owned by a local government. It is regulated by the OK state drinking water program.
How many people does Lincoln Co Rw & Sewer Dist 4 serve?
Lincoln Co Rw & Sewer Dist 4 reports serving 2,525 people through 1,052 service connections in Lincoln County, Oklahoma.
Where does Lincoln Co Rw & Sewer Dist 4 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 Lincoln Co Rw & Sewer Dist 4 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 July 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 Lincoln Co Rw & Sewer Dist 4'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 July 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 Lincoln Co Rw & Sewer Dist 4's water quality report?
As a community water system, Lincoln Co Rw & Sewer Dist 4 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 Lincoln County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Chandler | Lincoln | 3,142 | Community | Surface water |
| Stroud Utilities Authority | Lincoln | 2,811 | Community | Surface water |
| Prague | Lincoln | 2,395 | Community | Groundwater |
| Meeker Public Works Authority | Lincoln | 1,044 | Community | Purchased surface water |
| Davenport Utility Auth | Lincoln | 881 | Community | Purchased surface water |
| Wellston | Lincoln | 825 | Community | 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, “Lincoln Co Rw & Sewer Dist 4, PWSID OK2004105, Oklahoma”, https://aquacensus.com/water-systems/oklahoma/lincoln-co-rw-sewer-dist-4-ok2004105 (data as of October 1, 2026).