Public water system · IL3164681
ActiveSpring Brook Marina Docks
At a glance
Spring Brook Marina Docks (PWSID IL3164681) is an active transient non-community water system in LaSalle County, Illinois. It reports serving 50 people through 4 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
50
Service connections
4
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Spring Brook Marina Docks compare with other water systems in LaSalle County?
By EPA's size categories, Spring Brook Marina Docks is a very small system (500 people or fewer). LaSalle County has 129 active public water systems. Its population served is well below the county average of 816 people per system, and accounts for less than 0.1% of the 105,319 people reported by systems filed under the county. Across Illinois, the 3,872 active systems average 3,204 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Spring Brook Marina Docks is about 65% below that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Illinois has 1,703 active transient non-community water systems, 44% of the state's 3,872 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 2,808 Illinois systems (73%) list groundwater as their primary source.
Who owns and regulates Spring Brook Marina Docks?
EPA lists Spring Brook Marina Docks as privately owned. The IL state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 99 of the 129 active systems in LaSalle County (77%) are also privately owned.
Does Spring Brook Marina Docks have drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in July 2025. The violations listed here began between October 2022 and July 2025. By type: 1 public notice, recordkeeping or other, 1 required treatment not met and 1 monitoring. The contaminant or rule involved most often is Revised Total Coliform Rule (2 of them). EPA lists 2 as resolved and 1 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-07-19 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2025-05-02 | Required treatment not metTreatment Technique Startup Procedures (RTCR) · code 2D | Revised Total Coliform Rulecode 8000 | Yes | Unaddressed |
| 2022-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | 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.
Spring Brook Marina Docks: frequently asked questions
Who runs Spring Brook Marina Docks?
Spring Brook Marina Docks (PWSID IL3164681) is a transient non-community water system privately owned. It is regulated by the IL state drinking water program.
How many people does Spring Brook Marina Docks serve?
Spring Brook Marina Docks reports serving 50 people through 4 service connections in LaSalle County, Illinois.
Where does Spring Brook Marina Docks 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 Spring Brook Marina Docks have any drinking water violations?
EPA's records list 3 violations for this system; 1 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 Spring Brook Marina Docks' 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; 1 is health-based, and the most recent began in July 2025. For current results, consult EPA ECHO, or the IL state drinking water program.
Where can I find Spring Brook Marina Docks' water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Spring Brook Marina Docks is a 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 LaSalle County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Il American-Streator | LaSalle | 19,000 | Community | Surface water |
| Ottawa | LaSalle | 18,097 | Community | Groundwater |
| Peru | LaSalle | 10,300 | Community | Groundwater |
| La Salle | LaSalle | 9,700 | Community | Groundwater |
| Mendota | LaSalle | 7,100 | Community | Groundwater |
| Marseilles | LaSalle | 5,061 | 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, “Spring Brook Marina Docks, PWSID IL3164681, Illinois”, https://aquacensus.com/water-systems/illinois/spring-brook-marina-docks-il3164681 (data as of October 1, 2026).