Public water system · ID7100022
ActiveCottonwood Acres Div 4
At a glance
Cottonwood Acres Div 4 (PWSID ID7100022) is an active community water system in Bonneville County, Idaho. It reports serving 43 people through 17 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in June 2014.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
43
Service connections
17
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Cottonwood Acres Div 4 compare with other water systems in Bonneville County?
By EPA's size categories, Cottonwood Acres Div 4 is a very small system (500 people or fewer). Bonneville County has 126 active public water systems. Its population served is well below the county average of 1,089 people per system, and accounts for less than 0.1% of the 137,194 people reported by systems filed under the county. Across Idaho, the 1,961 active systems average 899 people each. Nationally, the average active community water system reports serving 6,703 people, so Cottonwood Acres Div 4 is well 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. Idaho has 765 active community water systems, 39% 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 Cottonwood Acres Div 4?
EPA lists Cottonwood Acres Div 4 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. 99 of the 126 active systems in Bonneville County (79%) are also privately owned.
Does Cottonwood Acres Div 4 have drinking water violations?
Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in June 2014. The violations listed here began between October 2007 and June 2014. By type: 5 monitoring and reporting, 3 contaminant level above the legal limit, 2 public notice, recordkeeping or other and 2 required treatment not met. The contaminant or rule involved most often is Total coliform bacteria (TCR) (5 of them). EPA lists 6 as resolved and 6 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 |
|---|---|---|---|---|
| 2014-06-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2013-10-09 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2013-10-09 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2013-08-13 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2013-08-13 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2011-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2011-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2010-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2010-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Archived |
| 2007-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 2007-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 2007-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Archived |
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.
Cottonwood Acres Div 4: frequently asked questions
Who runs Cottonwood Acres Div 4?
Cottonwood Acres Div 4 (PWSID ID7100022) is a community water system privately owned. It is regulated by the ID state drinking water program.
How many people does Cottonwood Acres Div 4 serve?
Cottonwood Acres Div 4 reports serving 43 people through 17 service connections in Bonneville County, Idaho.
Where does Cottonwood Acres Div 4 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 Cottonwood Acres Div 4 have any drinking water violations?
Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in June 2014. 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 Cottonwood Acres Div 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, 5 are health-based, and the most recent began in June 2014. For current results, consult the system's annual water quality report, EPA ECHO, or the ID state drinking water program.
Where can I find Cottonwood Acres Div 4's water quality report?
As a community water system, Cottonwood Acres Div 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 Bonneville County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Idaho Falls City of | Bonneville | 69,450 | Community | Groundwater |
| Falls Water Company Inc. | Bonneville | 22,650 | Community | Groundwater |
| Ammon City of | Bonneville | 17,338 | Community | Groundwater |
| Iona Water Dept | Bonneville | 2,717 | Community | Groundwater |
| Comore Loma | Bonneville | 1,500 | Community | Groundwater |
| Melaleuca Warehouse Facility | Bonneville | 1,397 | Non-transient non-community | Groundwater |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Cottonwood Acres Div 4, PWSID ID7100022, Idaho”, https://aquacensus.com/water-systems/idaho/cottonwood-acres-div-4-id7100022 (data as of October 1, 2026).