Public water system · ID1090304
ActiveWarren Water System
At a glance
Warren Water System (PWSID ID1090304) is an active transient non-community water system in Bonner County, Idaho. It reports serving 45 people through 17 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 11 violations for this system; 2 are health-based, and the most recent began in September 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
45
Service connections
17
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Warren Water System compare with other water systems in Bonner County?
By EPA's size categories, Warren Water System is a very small system (500 people or fewer). Bonner County has 140 active public water systems. Its population served is well below the county average of 276 people per system, and accounts for 0.1% of the 38,696 people reported by systems filed under the county. Across Idaho, the 1,961 active systems average 899 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Warren Water System is well 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. Idaho has 954 active transient non-community water systems, 49% of the state's 1,961 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,861 Idaho systems (95%) list groundwater as their primary source.
Who owns and regulates Warren Water System?
EPA lists Warren Water System as privately owned. The ID state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 101 of the 140 active systems in Bonner County (72%) are also privately owned.
Does Warren Water System have drinking water violations?
EPA's records list 11 violations for this system; 2 are health-based, and the most recent began in September 2025. The violations listed here began between April 2025 and September 2025. By type: 3 public notice, recordkeeping or other, 3 monitoring and reporting, 3 monitoring and 2 required treatment not met. The contaminant or rule involved most often is E. coli (3 of them). EPA lists 6 as archived, 4 as unaddressed and 1 as resolved. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement. 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 |
|---|---|---|---|---|
| 2025-09-28 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2025-09-28 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2025-09-01 | Monitoring and reportingFailure to Conduct Assessment Monitoring · code 19 | E. colicode 3014 | No | Archived |
| 2025-09-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Archived |
| 2025-07-23 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Unaddressed |
| 2025-07-23 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2025-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Archived |
| 2025-06-01 | Monitoring and reportingFailure to Conduct Assessment Monitoring · code 19 | E. colicode 3014 | No | Archived |
| 2025-05-01 | Monitoring and reportingFailure to Conduct Assessment Monitoring · code 19 | E. colicode 3014 | No | Archived |
| 2025-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Archived |
| 2025-04-24 | Public notice, recordkeeping or otherFailure to Consult with State · code 20 | Groundwater Rulecode 0700 | No | Unaddressed |
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.
Warren Water System: frequently asked questions
Who runs Warren Water System?
Warren Water System (PWSID ID1090304) is a transient non-community water system privately owned. It is regulated by the ID state drinking water program.
How many people does Warren Water System serve?
Warren Water System reports serving 45 people through 17 service connections in Bonner County, Idaho.
Where does Warren Water System 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 Warren Water System have any drinking water violations?
EPA's records list 11 violations for this system; 2 are health-based, and the most recent began in September 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 Warren Water System'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; 2 are health-based, and the most recent began in September 2025. For current results, consult EPA ECHO, or the ID state drinking water program.
Where can I find Warren Water System's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Warren Water System 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 Bonner County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Sandpoint Public Works Dept | Bonner | 12,284 | Community | Surface water |
| Schweitzer Mountain Resort | Bonner | 3,301 | Non-transient non-community | Groundwater |
| Priest River City of | Bonner | 2,173 | Community | Surface water |
| Oden Water Assn Inc. | Bonner | 1,524 | Community | Surface water |
| Schweitzer Basin Water Company | Bonner | 955 | Community | Groundwater |
| Stoneridge Utilities | Bonner | 940 | 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, “Warren Water System, PWSID ID1090304, Idaho”, https://aquacensus.com/water-systems/idaho/warren-water-system-id1090304 (data as of October 1, 2026).