Public water system · IL3001099
ActiveNiabi Zoo
At a glance
Niabi Zoo (PWSID IL3001099) is an active transient non-community water system in Rock Island County, Illinois. It reports serving 5,000 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as under public/private ownership. EPA's records list 11 violations for this system; 3 are health-based, and the most recent began in February 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
5,000
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Niabi Zoo compare with other water systems in Rock Island County?
By EPA's size categories, Niabi Zoo is a medium system (3,301 to 10,000 people). Rock Island County has 102 active public water systems, and Niabi Zoo is the 6th-largest of them by population served. Its population served is about 3.1 times the county average of 1,592 people per system, and accounts for 3.1% of the 162,391 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 Niabi Zoo is about 35 times 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 Niabi Zoo?
EPA lists Niabi Zoo as under public/private ownership. 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. 16 of the 102 active systems in Rock Island County (16%) are also under public/private ownership.
Does Niabi Zoo have drinking water violations?
EPA's records list 11 violations for this system; 3 are health-based, and the most recent began in February 2023. The violations listed here began between April 1982 and February 2023. By type: 6 monitoring and reporting, 3 contaminant level above the legal limit, 1 public notice, recordkeeping or other and 1 monitoring. The contaminant or rule involved most often is Total coliform bacteria (TCR) (6 of them). EPA lists 6 as archived, 4 as resolved and 1 as unaddressed. 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. 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 |
|---|---|---|---|---|
| 2023-02-02 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2021-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2020-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2019-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1995-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1992-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1991-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1986-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1983-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1982-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 11 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.
Niabi Zoo: frequently asked questions
Who runs Niabi Zoo?
Niabi Zoo (PWSID IL3001099) is a transient non-community water system under public/private ownership. It is regulated by the IL state drinking water program.
How many people does Niabi Zoo serve?
Niabi Zoo reports serving 5,000 people through 1 service connection in Rock Island County, Illinois.
Where does Niabi Zoo 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 Niabi Zoo have any drinking water violations?
EPA's records list 11 violations for this system; 3 are health-based, and the most recent began in February 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 Niabi Zoo'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 11 violations for this system; 3 are health-based, and the most recent began in February 2023. For current results, consult EPA ECHO, or the IL state drinking water program.
Where can I find Niabi Zoo's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Niabi Zoo 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 Rock Island County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Moline | Rock Island | 44,500 | Community | Surface water |
| Rock Island | Rock Island | 39,018 | Community | Surface water |
| East Moline | Rock Island | 21,374 | Community | Surface water |
| Rock Island Arsenal, Us Army | Rock Island | 7,800 | Community | Surface water |
| Silvis | Rock Island | 7,473 | Community | Purchased surface water |
| Milan | Rock Island | 4,945 | 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, “Niabi Zoo, PWSID IL3001099, Illinois”, https://aquacensus.com/water-systems/illinois/niabi-zoo-il3001099 (data as of October 1, 2026).