Public water system · ID1400017
ActiveE Shoshone County Water Dist Mullan
At a glance
E Shoshone County Water Dist Mullan (PWSID ID1400017) is an active community water system in Shoshone County, Idaho. It reports serving 840 people through 426 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. EPA's records list 6 violations for this system; 3 are health-based, and the most recent began in July 2011.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
840
Service connections
426
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does E Shoshone County Water Dist Mullan compare with other water systems in Shoshone County?
By EPA's size categories, E Shoshone County Water Dist Mullan is a small system (501 to 3,300 people). Shoshone County has 37 active public water systems, and E Shoshone County Water Dist Mullan is the 4th-largest of them by population served. Its population served is about twice the county average of 422 people per system, and accounts for 5.4% of the 15,614 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 E Shoshone County Water Dist Mullan 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 66 Idaho systems (3.4%) list surface water as their primary source.
Who owns and regulates E Shoshone County Water Dist Mullan?
EPA lists E Shoshone County Water Dist Mullan as owned by a local government. 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. 8 of the 37 active systems in Shoshone County (22%) are also owned by a local government.
Does E Shoshone County Water Dist Mullan have drinking water violations?
EPA's records list 6 violations for this system; 3 are health-based, and the most recent began in July 2011. The violations listed here began between October 1979 and July 2011. By type: 3 monitoring and reporting, 2 required treatment not met 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 3 as resolved and 3 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 |
|---|---|---|---|---|
| 2011-07-19 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 1998-08-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1997-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1992-01-01 | Required treatment not metFailure to Filter (SWTR) · code 42 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 1991-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1979-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
All 6 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.
E Shoshone County Water Dist Mullan: frequently asked questions
Who runs E Shoshone County Water Dist Mullan?
E Shoshone County Water Dist Mullan (PWSID ID1400017) is a community water system owned by a local government. It is regulated by the ID state drinking water program.
How many people does E Shoshone County Water Dist Mullan serve?
E Shoshone County Water Dist Mullan reports serving 840 people through 426 service connections in Shoshone County, Idaho.
Where does E Shoshone County Water Dist Mullan get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does E Shoshone County Water Dist Mullan have any drinking water violations?
EPA's records list 6 violations for this system; 3 are health-based, and the most recent began in July 2011. 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 E Shoshone County Water Dist Mullan'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 6 violations for this system; 3 are health-based, and the most recent began in July 2011. For current results, consult the system's annual water quality report, EPA ECHO, or the ID state drinking water program.
Where can I find E Shoshone County Water Dist Mullan's water quality report?
As a community water system, E Shoshone County Water Dist Mullan 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 Shoshone County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Central Shoshone County Water Dist | Shoshone | 6,098 | Community | Groundwater under influence of surface water |
| E Shoshone County Water Dist Wallace | Shoshone | 2,388 | Community | Surface water |
| Pinehurst Water Dist | Shoshone | 1,950 | Community | Groundwater |
| Cataldo Water Dist | Shoshone | 680 | Community | Groundwater |
| Lookout Pass Ski Area | Shoshone | 600 | Transient non-community | Groundwater under influence of surface water |
| Kingston Water Dist 1 | Shoshone | 585 | 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, “E Shoshone County Water Dist Mullan, PWSID ID1400017, Idaho”, https://aquacensus.com/water-systems/idaho/e-shoshone-county-water-dist-mullan-id1400017 (data as of October 1, 2026).