Public water system · ID4010122
ActiveRim Acres Mutual Water
At a glance
Rim Acres Mutual Water (PWSID ID4010122) is an active community water system in Ada County, Idaho. It reports serving 31 people through 13 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, one is health-based, and the most recent began in March 2017.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
31
Service connections
13
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Rim Acres Mutual Water compare with other water systems in Ada County?
By EPA's size categories, Rim Acres Mutual Water is a very small system (500 people or fewer). Ada County has 87 active public water systems. Its population served is well below the county average of 5,880 people per system, and accounts for less than 0.1% of the 511,514 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 Rim Acres Mutual Water 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 Rim Acres Mutual Water?
EPA lists Rim Acres Mutual Water 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. 71 of the 87 active systems in Ada County (82%) are also privately owned.
Does Rim Acres Mutual Water have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in March 2017. The violations listed here began between January 2014 and March 2017. By type: 9 monitoring and reporting, 1 monitoring, 1 public notice, recordkeeping or other and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 10 as resolved and 2 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 |
|---|---|---|---|---|
| 2017-03-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-10-30 | Public notice, recordkeeping or otherFailure to Consult with State · code 20 | Groundwater Rulecode 0700 | No | Resolved |
| 2015-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 2015-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2014-12-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Alachlor (Lasso)code 2051 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Picloramcode 2040 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Methoxychlorcode 2015 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Ethylene dibromide (EDB)code 2946 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Polychlorinated biphenyls (PCBs), totalcode 2383 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Hexachlorocyclopentadienecode 2042 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Di(2-ethylhexyl) adipatecode 2035 | No | Resolved |
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.
Rim Acres Mutual Water: frequently asked questions
Who runs Rim Acres Mutual Water?
Rim Acres Mutual Water (PWSID ID4010122) is a community water system privately owned. It is regulated by the ID state drinking water program.
How many people does Rim Acres Mutual Water serve?
Rim Acres Mutual Water reports serving 31 people through 13 service connections in Ada County, Idaho.
Where does Rim Acres Mutual Water 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 Rim Acres Mutual Water have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in March 2017. 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 Rim Acres Mutual Water'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, one is health-based, and the most recent began in March 2017. For current results, consult the system's annual water quality report, EPA ECHO, or the ID state drinking water program.
Where can I find Rim Acres Mutual Water's water quality report?
As a community water system, Rim Acres Mutual Water 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 Ada County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Veolia Water Idaho | Ada | 264,978 | Community | Surface water |
| Meridian Water Dept | Ada | 147,340 | Community | Groundwater |
| Kuna City of | Ada | 32,038 | Community | Groundwater |
| Star Sewer and Water Dist Water System | Ada | 14,000 | Community | Groundwater |
| Garden City Water and Sewer System | Ada | 12,500 | Community | Groundwater |
| Capitol Water Corp | Ada | 9,000 | 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, “Rim Acres Mutual Water, PWSID ID4010122, Idaho”, https://aquacensus.com/water-systems/idaho/rim-acres-mutual-water-id4010122 (data as of October 1, 2026).