Consumer Confidence Rule (CCR) violations in Montana
121 active public water systems in Montana had a Consumer Confidence Rule (CCR) violation in the past three years, 121 of them in the latest quarter of EPA's data. What Consumer Confidence Rule (CCR) is and why it matters.
Systems with a Consumer Confidence Rule (CCR) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Deerfield Hutterite Colony Lewistown · Fergus County |
51 | 2 | 1 | |
|
North Geraldine Water System Geraldine · Chouteau County |
50 | 1 | 1 | |
|
Two Dot Water Users Company Two Dot · Wheatland County |
50 | 1 | 1 | |
|
Wegner Water Service Hauler Hardin · Big Horn County |
50 | 3 | 2 | |
|
Overlook Subdivision Polson · Lake County |
49 | 1 | 0 | |
|
Spring Creek Colony Lewistown Lewistown · Fergus County |
48 | 1 | 0 | |
|
East Malta Colony Malta · Phillips County |
47 | 3 | 0 | |
|
Cougar Meadows St Regis · Mineral County |
45 | 1 | 1 | |
|
Sky Ranch Water Association Kalispell · Flathead County |
45 | 1 | 1 | |
|
Moonlight Estates HOA Helena · Lewis and Clark County |
44 | 2 | 0 | |
|
Broadwater Estates HOA Helena · Lewis and Clark County |
40 | 2 | 0 | |
|
Mobile City 3 Helena · Lewis and Clark County |
40 | 4 | 0 | |
|
Hunters Trailer CT Anaconda Anaconda · Deer Lodge County |
38 | 3 | 2 | |
|
Renae Court Subdivision Missoula · Missoula County |
36 | 1 | 1 | |
|
Bahny Brae Subdivision East Helena · Lewis and Clark County |
35 | 3 | 0 | |
|
Catlin Street Mobile Court Missoula · Missoula County |
35 | 1 | 1 | |
|
Creekside Motel RV and Trlr PK Eureka · Lincoln County |
35 | 3 | 0 | |
|
Elk Park Village Columbia Falls · Flathead County |
35 | 1 | 1 | |
|
Bmp Lincoln Rentals LLC Bozeman · Gallatin County |
31 | 3 | 1 | |
|
Rocky Mountain Wua Clancy · Jefferson County |
30 | 3 | 0 | |
|
Fishermans Village Subdivision West Yellowstone · Gallatin County |
25 | 9 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Consumer Confidence Rule (CCR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Consumer Confidence Rule (CCR) alone.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Montana records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.