Public water system · OK2003514
ActiveUs Silica
At a glance
Us Silica (PWSID OK2003514) is an active non-transient non-community water system in Johnston County, Oklahoma. It reports serving 31 people through 3 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 3 violations for this system; none is health-based, and the most recent began in October 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
31
Service connections
3
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Us Silica compare with other water systems in Johnston County?
By EPA's size categories, Us Silica is a very small system (500 people or fewer). Johnston County has 13 active public water systems. Its population served is well below the county average of 792 people per system, and accounts for 0.3% of the 10,296 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 Us Silica 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 Us Silica?
EPA lists Us Silica 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. 3 of the 13 active systems in Johnston County (23%) are also privately owned.
Does Us Silica have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in October 2023. The violations listed here began between January 2011 and October 2023. By type: 2 monitoring and 1 monitoring and reporting. The contaminant or rule involved most often is Revised Total Coliform Rule (2 of them). EPA lists 3 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 |
|---|---|---|---|---|
| 2023-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2023-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2011-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 3 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.
Us Silica: frequently asked questions
Who runs Us Silica?
Us Silica (PWSID OK2003514) is a non-transient non-community water system privately owned. It is regulated by the OK state drinking water program.
How many people does Us Silica serve?
Us Silica reports serving 31 people through 3 service connections in Johnston County, Oklahoma.
Where does Us Silica 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 Us Silica have any drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in October 2023. 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 Us Silica'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. EPA's records list 3 violations for this system; none is health-based, and the most recent began in October 2023. For current results, consult EPA ECHO, or the OK state drinking water program.
Where can I find Us Silica's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Us Silica 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 Johnston County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Tishomingo Municipal Authority | Johnston | 3,000 | Community | Surface water |
| Johnston Co Rwd #3 | Johnston | 2,783 | Community | Groundwater |
| Murray State College | Johnston | 1,150 | Community | Surface water |
| Johnston Co Rws& Swmd #4 | Johnston | 600 | Community | Groundwater |
| Mannsville Public Works Authority | Johnston | 587 | Community | Groundwater |
| Ravia | Johnston | 459 | 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, “Us Silica, PWSID OK2003514, Oklahoma”, https://aquacensus.com/water-systems/oklahoma/us-silica-ok2003514 (data as of October 1, 2026).