Smaller places in Montana — page 2 of 6
Places with fewer than 20 listed facilities are grouped here — 1,715 facilities in all.
1 (…) · 2 (Anaconda…) · 3 (Colstrip…) · 4 (Gardiner…) · 5 (Olney…) · 6 (Thornton…)
| Place | Facility | Programs | Formal actions (5 yr) | Compliance status |
|---|---|---|---|---|
| Anaconda | DAVE GATES GENERATING STATION MILL CREEK | Air, Water | — | No Violation Identified |
| Anaconda | DEER LODGE CO RD CEMETERY SHOP COMPLEX | Hazardous waste | — | No Violation Identified |
| Anaconda | GALEN FACILITY | Drinking water | — | No Violation Identified |
| Anaconda | JOHNSON CONSTRUCTION CLARK FORK AND ROCK CREEK 318 PERMIT | Water | — | No Violation Identified |
| Anaconda | JORDAN CONTRACTING INC | Hazardous waste | — | No Violation Identified |
| Anaconda | KARST STAGE INDUSTRIAL NO EXPOSURE | Water | — | No Violation Identified |
| Anaconda | LISACS TIRE ANACONDA | Hazardous waste | — | No Violation Identified |
| Anaconda | MILL CREEK COMPRESSOR STATION | Hazardous waste | — | No Violation Identified |
| Anaconda | SEVEN GABLES RESORT-TREATMENT PLANT FOR MOTEL | Drinking water | — | No Violation Identified |
| Angela | CLEARWATER WIND EAST, LLC | Water | — | No Violation Identified |
| Angela | ROSEBUD COUNTY STOCKPILE | Water | — | No Violation Identified |
| Antelope | ANTELOPE COUNTY WATER AND SEWER | Drinking water | 1 | No Violation Identified |
| Arlee | ARLEE ELEMENTARY SCHOOL-TP CHLORINATION FOR BASEMENT WELL 1 | Drinking water | — | Inactive |
| Arlee | ARLEE HIGH SCHOOL DIST NO 8-TP CHLORINATION FOR BASEMENT WELL 1 | Water, Hazardous waste, Drinking water | — | No Violation Identified |
| Arlee | ASHLEY MARTIN MFG LLC | Drinking water | — | No Violation Identified |
| Arlee | AUNTIES EMPORIUM-TREATMENT PLANT | Drinking water | — | Significant Violation |
| Arlee | JOCKO RIVER TROUT HATCHERY | Water | — | No Violation Identified |
| Arlee | KELLY'S AUTO SALVAGE & WRECKER SERVICE | Water | — | — |
| Arlee | SCHELLINGER CONSTRUCTION CO INC - US 93 MCCLURE RD N OF ARLEE COUPLET | Water | — | No Violation Identified |
| Ashland | ASHLAND LAGOONS | Water | — | No Violation Identified |
| Ashland | CHEYENNE DEPOT II | Hazardous waste | — | No Violation Identified |
| Ashland | MARTIN CONSTRUCTION - HOME CREEK 318 PERMIT | Water | — | No Violation Identified |
| Ashland | PRETTY EAGLE SCHOOL-PRETTY EAGLE TREATMENT PLANT | Drinking water | — | No Violation Identified |
| Ashland | ST LABRE INDIAN SCHOOL | Water, Hazardous waste, Drinking water | 10 | No Violation Identified |
| Ashland | WESTERN FEDERAL LANDS HWY DIVISION - EAST FORK OTTER CREEK ROAD MT PFH 90-1(1) | Water | — | No Violation Identified |
| Ashland | WICKENS CONSTRUCTION WETLANDS AND STREAMS CULVERTS AND BRIDGES 318 | Water | — | No Violation Identified |
| Augusta | AUGUSTA MAIN LINE #3 (STA 051) | Air | — | No Violation Identified |
| Augusta | AUGUSTA MT RV PARK-TREATMENT PLANT | Drinking water | — | No Violation Identified |
| Augusta | BROKEN O LAND AND LIVESTOCK, LLC | Water | — | No Violation Identified |
| Augusta | BUCKHORN BAR AUGUSTA-TREATMENT PLANT-SEDIMENT FILTER | Drinking water | — | No Violation Identified |
| Augusta | KIEWIT INFRASTRUCTURE WEST KEARL MODULE TRANSPORT HAUL PROJECT | Water | — | No Violation Identified |
| Augusta | MT DEPT OF TRANSPORTATION CULVERT REPAIRS AUGUSTA 318 PERMIT | Water | — | No Violation Identified |
| Augusta | SCHOOL SECTION PHASE 2 | Water | — | No Violation Identified |
| Augusta | WICKENS CONSTRUCTION INC 318 PERMIT | Water | — | No Violation Identified |
| Avon | CONOCOPHILLIPS YELLOWSTONE PIPE LINE CO SPOTTED DOG CREEK 318 | Water | — | No Violation Identified |
| Avon | MONTANA RAIL LINK - LITTLE BLACKFOOT RIVER BRIDGE 41 REPAIR - AVON | Water | — | No Violation Identified |
| Babb | GLACIER NATIONAL PARK WINDY CREEK 318 PERMIT | Water | — | No Violation Identified |
| Babb | MANY GLACIER WASTEWATER TREATMENT PLANT | Water | — | Violation Identified |
| Babb | SLETTEN CONSTRUCTION - ST MARY RIVER 318 PERMIT | Water | — | No Violation Identified |
| Babb | US CBP PIEGAN PORT OF ENTRY | Hazardous waste, Drinking water | — | Violation Identified |
| Babb | US DEPT OF THE INTERIOR - GLACIER N.P. | Water | — | No Violation Identified |
| Bainville | BAINVILLE PROPERTY HOLDINGS - THE DISTRICT PLAZA ON HWY 2 MONTANA | Water | — | No Violation Identified |
| Bainville | BAINVILLE STATION | Air | — | No Violation Identified |
| Bainville | BAINVILLE TOWN OF | Drinking water | — | Violation Identified |
| Bainville | BASIN ELECTRIC POWER COOPERATIVE | Air | — | No Violation Identified |
| Bainville | BNSF BAINVILLE DERAILMENT SITE | Hazardous waste | — | No Violation Identified |
| Bainville | BNSF BAINVILLE MT PRE-DEMO WASTE REMOVAL | Hazardous waste | — | No Violation Identified |
| Bainville | DUAL TRUCKING TREATMENT FACILITY | Water | — | No Violation Identified |
| Bainville | HILAND OPERATING - HEBRON COMPRESSOR FACILITY | Water | — | No Violation Identified |
| Bainville | MBA CONSTRUCTION - MACBAIN PROPERTIES BAINVILLE WORKFORCE HOUSING PROJECT | Water | — | No Violation Identified |
| Bainville | MBA CONSTRUCTION - PROCORE YARD BAINVILLE | Water | — | No Violation Identified |
| Bainville | MBA CONSTRUCTION - TOWN OF BAINVILLE SEWAGE LAGOON SITE | Water | — | No Violation Identified |
| Bainville | ROOSEVELT COUNTY CONSERVATION DIST. MISSOURI RIVER (BAINVILLE) 318 PERMIT | Water | — | No Violation Identified |
| Bainville | SK CONSTRUCTION - HWY 2 EAST OF BAINVILLE 318 PERMIT | Water | — | No Violation Identified |
| Bainville | WINDY BUTTES RECLAMATION FACILITY | Water | — | No Violation Identified |
| Ballantine | HUNTLEY PROJECT IRRIGATION DISTRICT YELLOWSTONE RIVER 318 | Water | — | No Violation Identified |
| Ballantine | I-94 BR PRES MP14-21; STRUCTURE ID 01874 / 01875 | Hazardous waste | — | No Violation Identified |
| Ballantine | TRACT 2 SITE | Water | — | Significant Violation |
| Ballantine | VOGEL FEEDERS INC | Water | — | No Violation Identified |
| Basin | KIT CARSON GOLD MINE | Water | — | — |
| Basin | OT MINING CORPORATION | Water | — | Violation Identified |
| Basin | SATURDAY NIGHT MINE | Water | — | No Violation Identified |
| Bear Creek | SLIDE REPAIR W OF BEAR CREEK | Water | — | No Violation Identified |
| Bearmouth | MRL RIVER BANK BRIDGE PROTECTION CLARK FORK 318 | Water | — | No Violation Identified |
| Belfry | AMERICAN COLLOID CO | Water | — | Violation Identified |
| Belfry | BELFRY CARBON CO WATER AND SEWER DIST | Drinking water | — | Violation Identified |
| Belfry | EBET2 390 (ELK BASIN EMBAR TENSLEEP #390) | Water | — | No Violation Identified |
| Belfry | ENCORE ENERGY PARTNERS OPERATING - ELK BASIN MADISON 2-384 | Water | — | No Violation Identified |
| Belfry | JJ BUNKIRT OIL AND GAS - SUMMIT 22-26 | Water | — | No Violation Identified |
| Belfry | PAR MONTANA SILVERTIP PIPELINE STATION | Hazardous waste | — | No Violation Identified |
| Belfry | RED BUTTE PIPE LINE - SILVERTIP STATION | Hazardous waste | — | No Violation Identified |
| Belfry | TAMIETTI CONSTRUCTION MDOT BEAR CREEK BRIDGE 318 | Water | — | No Violation Identified |
| Belfry | TAMIETTI CONSTRUCTION MDOT CLARKS FORK SILVERTIP CREEK | Water | — | No Violation Identified |
| Belfry | TAMIETTI CONSTRUCTION MDOT MUSSELSHELL RIVER 318 | Water | — | No Violation Identified |
| Belle Creek | DENBURY RESOURCES - BELLE CREEK ENHANCED OIL RECOVERY PROJ PH 2 AND 3 | Water | — | No Violation Identified |
| Belt | BELT PUBLIC SCHOOLS | Water, Hazardous waste | — | No Violation Identified |
| Belt | BELT TOWN OF | Drinking water | — | No Violation Identified |
| Belt | BELT WATER TREATMENT PLANT | Water | — | Significant Violation |
| Belt | BELT WATER TREATMENT PLANT | Water | — | No Violation Identified |
| Belt | CONOCOPHILLIPS PIPE LINE CO BELT CREEK PIPE LINE EXPOSURE 318 | Water | — | No Violation Identified |
| Belt | SLETTEN CONSTRUCTION MDOT BELT CREEK DETOUR BRIDGE 318 | Water | — | No Violation Identified |
| Belt | TOWN OF BELT - BELT CREEK BRIDGE STREET - BELT AND SIDEWALKS | Water | — | No Violation Identified |
| Belt | TOWN OF BELT - WWTP | Water | — | Significant Violation |
| Bernice | V BAR K LL OPEN CUT GRAVEL SITE | Water | — | No Violation Identified |
| Biddle | BELL CREEK CENTRAL FACILITY | Air | — | No Violation Identified |
| Biddle | BISON PIPELINE LLC POWDER RIVER COUNTY PIPELINE 318 | Water | — | No Violation Identified |
| Biddle | OFTEDAL CONSTRUCTION - OFTEDAL YARD | Water | — | No Violation Identified |
| Biddle | OFTEDAL CONSTRUCTION - WYOMING LINE NORTH STPP 54-1(9)0 | Water | — | No Violation Identified |
| Biddle | OFTEDAL CONSTRUCTION HWY 59 S OF BIDDLE 318 | Water | — | No Violation Identified |
| Biddle | PINNACLE ENERGY GROUP OIL/GAS WELLS | Water | — | No Violation Identified |
| Big Arm | JIM PHILLIPS CONTRACTING INC | Hazardous waste | — | No Violation Identified |
| Big Fork | ATANAHA EVENT CENTER-TREATMENT PLANT | Drinking water | — | No Violation Identified |
| Big Fork | BIG SKY BIBLE CAMP-TREATMENT PLANT | Drinking water | — | No Violation Identified |
| Big Fork | FERNDALE MARKET FERNDALE-TREATMENT PLANT | Drinking water | — | No Violation Identified |
| Big Horn | TERESA BOTTRELL YELLOWSTONE RIVER BANK REHAB | Water | — | No Violation Identified |
| Big Sandy | BIG SANDY TOWN OF | Drinking water | — | No Violation Identified |
| Big Sandy | MOUNTAIN VIEW CO-OP | — | 1 | — |
| Big Sandy | TOWN OF BIG SANDY | Water | — | No Violation Identified |
| Big Sandy | TOWN OF BIG SANDY WASTEWATER TREATMENT FACILITY | Water | — | No Violation Identified |
| Big Sky Ski Area | SBC INC - YELLOWSTONE MOUNTAIN CLUB RANCH 4 | Water | — | No Violation Identified |
| Big Timber | BIG TIMBER AUTO SUBSTATION | Hazardous waste | — | No Violation Identified |
| Big Timber | BIG TIMBER CITY OF | Drinking water | — | No Violation Identified |
| Big Timber | C SHARPS ARMS CO INC | Water, Hazardous waste | — | No Violation Identified |
| Big Timber | CONOCOPHILLIPS YELLOWSTONE PIPE LINE CO SWEETGRASS CREEK 318 | Water | — | No Violation Identified |
| Big Timber | KINGFISHER CONSULTING INC BIG TIMBER CREEK 318 PERMIT | Water | — | No Violation Identified |
| Big Timber | NORTHWESTERN ENERGY - BIG TIMBER WATER SLIDE SPRING CREEK 318 | Water | — | No Violation Identified |
| Big Timber | SHILOH RIFLE MFG BOULDER RIVER FOUNDRY | Hazardous waste | — | No Violation Identified |
| Big Timber | SHILOH SHARPS | Water | — | — |
| Big Timber | STETSON FORD | Hazardous waste | — | No Violation Identified |
| Big Timber | STILLWATER EXCAVATING BOULDER RIVER MDOT SWEETGRASS COUNTY 318 | Water | — | No Violation Identified |
| Big Timber | STILLWATER MINING CO EAST BOULDER MINE | Hazardous waste | — | No Violation Identified |
| Big Timber | STILLWATER MINING CO EAST BOULDER MINE | Water | — | Violation Identified |
| Big Timber | SWEET GRASS COUNTY ROAD PARKING LOT WEST | Hazardous waste | — | No Violation Identified |
| Bighorn | RANCHER DITCH CO YELLOWSTONE DIVERSION DAM 318 | Water | — | No Violation Identified |
| Birney | BIRNEY WASTEWATER LAGOON | Water | — | No Violation Identified |
| Birney | DIAMOND CROSS RANCH LLC - TONGUE RIVER 318 PERMIT | Water | — | No Violation Identified |
| Black Eagle | BIG SKY BUS LINES INC | Hazardous waste | — | No Violation Identified |
| Black Eagle | BLACK EAGLE CASCADE COUNTY WATER SEWER | Drinking water | — | No Violation Identified |
| Black Eagle | MONTANA WASTE SYSTEMS INC BLACK EAGLE HAULING | Water | — | No Violation Identified |
| Black Eagle | NORTHWESTERN ENERGY RAINBOW DAM SHOP | Hazardous waste | — | No Violation Identified |
| Black Eagle | SHUMAKER TRUCKING & EXCAVATING CONTR INC | Hazardous waste | — | No Violation Identified |
| Bloomfield | TERRIER SERVICES INC | Hazardous waste | — | No Violation Identified |
| Bonner | FWP CLARK FORK BLACKFOOT RIVER MILLTOWN STATE PARK 318 | Water | — | No Violation Identified |
| Bonner | KETTLEHOUSE BREWING AND AMPHITHEATER-TREATMENT PLANT | Drinking water | — | No Violation Identified |
| Bonner | KETTLEHOUSE BREWING CO - BONNER BREW HOUSE | Water | — | No Violation Identified |
| Bonner | POTOMAC BAR-TREATMENT PLANT FOR WELL 1 | Drinking water | — | No Violation Identified |
| Bonner | POTOMAC GREENOUGH COMMUNITY CENTER-TREATMENT PLANT WELL 1 | Drinking water | — | No Violation Identified |
| Bonner | POTOMAC SCHOOL DIST 11-TREATMENT PLANT 1 | Drinking water | — | No Violation Identified |
| Bonner | STIMSON LUMBER CO BONNER MILL | Drinking water | — | No Violation Identified |
| Bonner | STIMSON LUMBER CO BONNER OPERATION | Water, Hazardous waste | — | No Violation Identified |
| Bonner | STIMSON LUMBER CO MILLTOWN | Drinking water | — | No Violation Identified |
| Bonner | WHITE WATER PARK ASSOC BONNER | Drinking water | — | No Violation Identified |
| Boulder | AM WELLES - COMPTON SITE | Water | — | No Violation Identified |
| Boulder | BOULDER CITY OF | Drinking water | — | Violation Identified |
| Boulder | CITY OF BOULDER WWTF | Water | — | Violation Identified |
| Boulder | ELKHORN GOLD FIELDS INC | Hazardous waste | — | No Violation Identified |
| Boulder | ELKHORN GOLDFIELDS INC ELKHORN MINE SITE | Water | — | No Violation Identified |
| Boulder | ELKHORN GOLDFIELDS INC ELKHORN MINE SITE | Water | — | No Violation Identified |
| Boulder | JEFFERSON COUNTY - WEED AND MOSQUITO DISTRICTS | Water | — | Violation Identified |
| Boulder | JEFFERSON HIGH SCHOOL | Hazardous waste | — | No Violation Identified |
| Boulder | MONTANA DEVELOPMENTAL CENTER BOULDER | Hazardous waste | — | No Violation Identified |
| Boulder | TINGS BAR-TREATMENT PLANT | Drinking water | — | No Violation Identified |
| Box Elder | AGENCY LAGOON | Water | — | No Violation Identified |
| Box Elder | AZURE LAGOON | Water | — | Violation Identified |
| Box Elder | BLUE LAGOON | Water | — | No Violation Identified |
| Box Elder | BONNEAU WWTF | Water | — | No Violation Identified |
| Box Elder | BOX ELDER SCHOOL DISTRICT 13G-TREATMENT PLANT | Drinking water | — | No Violation Identified |
| Box Elder | EAGLEMAN COMMUNITY WATER-EAGLEMAN WELL TREATMENT PLANT | Drinking water | — | No Violation Identified |
| Box Elder | LOWER DRY FORK LAGOON | Water | — | No Violation Identified |
| Box Elder | MIYO YOUTH CENTER | Water | — | No Violation Identified |
| Box Elder | MULTI-COMMUNITY LAGOON | Water | — | No Violation Identified |
| Box Elder | NORTHERN WINZ CASINO LAGOON | Water | — | No Violation Identified |
| Box Elder | OATS ROAD DRUMS SITE | Hazardous waste | — | No Violation Identified |
| Box Elder | TRIANGLE TELEPHONE COOPERATIVE ASSN., INC. BOX ELDER FTTP UPGRADE PROJECT 2018 | Water | — | No Violation Identified |
| Boyes | M&K OIL COMPANY - WRIGHT CREEK WATER DISPOSAL FACILITY | Water | — | No Violation Identified |
| Brady | BRADY COUNTY WATER SEWER DISTRICT | Water | — | No Violation Identified |
| Brady | MOUNTAIN VIEW CO-OP | — | 1 | — |
| Brady | TIBER COUNTY WATER DISTRICT-TP FILTRATION PLANT FOR TIBER H20 DIST | Drinking water | — | No Violation Identified |
| Bridger | BRIDGER MT DERAILMENT | Hazardous waste | — | No Violation Identified |
| Bridger | BRIDGER TOWN OF | Drinking water | — | No Violation Identified |
| Bridger | BRIDGER WWTP | Water | — | Violation Identified |
| Bridger | BYRON PIPELINE AND WARREN TO BELFRY HYDROSTATIC WATER TREATMENT SITE | Water | — | — |
| Bridger | LINE 0154A GATE VALVE 1 | Hazardous waste | — | No Violation Identified |
| Bridger | NORTHWESTERN CORP BRIDGER | Hazardous waste | — | No Violation Identified |
| Bridger | PAR MONTANA BRIDGER STATION | Hazardous waste | — | No Violation Identified |
| Bridger | TRAPPER PEAK CONSTRUCTION - JCT US 310 SOUTH | Water | — | No Violation Identified |
| Bridger | TRAPPER PEAK CONSTRUCTION YELLOWSTONE RIVER MDOT 318 | Water | — | No Violation Identified |
| Bridger | USDA USFS R01 CUSTER NATIONAL FOREST - CROOKED CREEK 308 PERMIT | Water | — | No Violation Identified |
| Bridger | WBI ENERGY TRANSMISSION - 2012 ELK BASIN - BILLINGS LINE REPLACEMENT | Water | — | No Violation Identified |
| Bridger | WILLISTON BASIN INTERSTATE PIPELINE CO - ELK BASIN BILLINGS LINE JOB 1 REPLACEME | Water | — | No Violation Identified |
| Bridger | WYO BEN INC - MONTANA 2-LOYNING | Water | — | No Violation Identified |
| Broadus | BROADUS TOWN OF | Drinking water | — | No Violation Identified |
| Broadus | EAST BEAR CREEK PHASE 1 FEDERAL | Water | — | No Violation Identified |
| Broadus | FORKS RANCH PLAN OF DEVELOPMENT CBM PROJECT | Water | — | No Violation Identified |
| Broadus | FOUR BEERS STILLWATER EXCAVATING - D4 CULVERTS PHASE IV POWDER RIVER COUNTY | Water | — | No Violation Identified |
| Broadus | GREENCORE PIPELINE CO - BELLE CREEK 318 | Water | — | No Violation Identified |
| Broadus | NORTH BRADSHAW UNIT PHASE 1 FEDERAL | Water | — | No Violation Identified |
| Broadus | POWDER RIVER CO. COMMISSIONERS - POWDER RIVER CO. LANDFILL | Water | — | No Violation Identified |
| Broadus | TOWN OF BROADUS WWTF | Water | — | Significant Violation |
| Broadus | UNITED PARCEL SERVICE - BROADUS FACILITY | Water | — | No Violation Identified |
| Broadus | UPS - BROADUS | Hazardous waste | — | No Violation Identified |
| Broadview | B & B AG SUPPLY | — | 1 | — |
| Broadview | BROADVIEW TOWN OF | Drinking water | — | No Violation Identified |
| Broadview | HAILSTONE HEIFER DEVELOPMENT | Water | — | No Violation Identified |
| Broadview | PUBLIC WATER SUPPLY WELL PWS #1 | Water | — | No Violation Identified |
| Brockton | B AND S QUICK STOP | — | — | No Violation Identified |
| Brockton | BROCKTON LAGOON AND LIFT STATION | Water | — | No Violation Identified |
| Brockton | BROCKTON LAGOONS | Water | — | Significant Violation |
| Brockton | BROCKTON, TOWN OF | Water | — | No Violation Identified |
| Brockton | CHARLEY CREEK CATTLE CO INC | Water | — | No Violation Identified |
| Brockway | MCCONE COUNTY STOCKPILE/PUG MILL | Water | — | No Violation Identified |
| Brockway | STORAGE CONNECTION LLC | Water | — | No Violation Identified |
| Brusett | US ARMY COE - FORT PECK INVASIVE SPECIES MANAGEMENT | Water | — | No Violation Identified |
| Buffalo | BUFFALO CANYON FEEDERS LLC | Water | — | No Violation Identified |
| Buffalo | EXPRESS PIPLEINE LLC - BUFFALO STATION | Hazardous waste | — | No Violation Identified |
| Buffalo | KINDER MORGAN CANADA INC EXPRESS PIPELINE SYSTEM BUFFALO TERMINAL EXPANSION PR | Water | — | No Violation Identified |
| Buffalo | PHILLIPS 66 LLC - BUFFALO CRUDE STATION | Hazardous waste | — | No Violation Identified |
| Busby | BUSBY LAGOONS | Water | — | No Violation Identified |
| Busby | BUSBY WEST AND BUSBY TOWN FTTH 2019 | Water | — | No Violation Identified |
| Busby | NORTHERN CHEYENNE YOUTH SERVICE CENTER | Drinking water | — | Violation Identified |
| Bynum | SLETTEN CONSTRUCTION MDT BIG MUDDY CREEK 318 | Water | — | No Violation Identified |
| Bynum | STREAM WORKS INC - 2008 DUPUYER CREEK 318 PERMIT | Water | — | No Violation Identified |
| Cameron | BEAVERHEAD TALC MINE | Water, Drinking water | — | Inactive |
| Cameron | GONDOLA BOTTOM STATION | Water | — | No Violation Identified |
| Cameron | IMERYS TALC AMERICA - YELLOWSTONE MINE | Water | — | No Violation Identified |
| Cameron | TREELINE SPRINGS LLC | Water | — | No Violation Identified |
| Capitol | ONEOK BAKKEN PIPELINE LLC CAPITOL PUMP STATION | Hazardous waste | — | No Violation Identified |
| Cardwell | CARDWELL CAMPGROUND LLC-TREATMENT PLANT WELL 2 | Drinking water | — | No Violation Identified |
| Cardwell | CARDWELL SCHOOL DIST 16 AND 31-TREATMENT PLANT FOR WELL 1 | Drinking water | — | Violation Identified |
| Carter | ASI INDUSTRIAL - CARTER GRAIN HANDLING FACILITY | Water | — | No Violation Identified |
| Carter | CARTER CHOUTEAU CO WATER DIST | Drinking water | — | Significant Violation |
| Cascade | BENEFIS HEALTHY AGING CENTER | Water | — | No Violation Identified |
| Cascade | CASCADE TOWN OF | Drinking water | — | No Violation Identified |
| Cascade | OLSON NORTH #2 PI SITE | Water | — | No Violation Identified |
| Cascade | TOWN OF CASCADE 318 PERMIT | Water | — | No Violation Identified |
| Charlo | CHARLO WATER DISTRICT | Drinking water | 1 | No Violation Identified |
| Charlo | CONSOLIDATED CHARLO-LAKE COUNTY WATER&SEWER DIST | Water | — | Significant Violation |
| Charlo | SMITH'S AUTO SALVAGE | Hazardous waste | — | Violation |
| Checkerboard | BEARTOOTH RANCH HOLDINGS LLC - N FORK MUSSELSHELL RIVER 318 PERMIT | Water | — | No Violation Identified |
| Checkerboard | SK CONSTRUCTION CHECKERBOARD MARTINSDALE DRAINAGE STRUCTURES | Water | — | No Violation Identified |
| Chester | CHESTER TOWN OF | Drinking water | — | Violation Identified |
| Chester | CJI PUBLIC SCHOOLS | Hazardous waste | — | No Violation Identified |
| Chester | EARL FISHER BIO FUELS FACILITY | Water | — | No Violation Identified |
| Chester | GAVILON GRAIN LLC | Water | — | No Violation Identified |
| Chester | LIBERTY COUNTY CONSERVATION DIST MARIAS RIVER 318 | Water | — | No Violation Identified |
| Chester | LIBERTY COUNTY PUGSLEY RANCHES MARIAS RIVER 318 | Water | — | No Violation Identified |
| Chester | ROCKY BOY WATER TREATMENT PLANT | Water | — | No Violation Identified |
| Chester | ROCKY BOY'S WTP PONDS | Water | — | No Violation Identified |
| Chester | SAGE CREEK CO WATER DISTRICT | Drinking water | — | Violation Identified |
| Chester | SHUMAKER TRUCKING MDT MARIAS RIVER 318 | Water | — | No Violation Identified |
| Chester | STODDARD CONSTRUCTION LLC LAKE ELWELL 318 PERMIT | Water | — | No Violation Identified |
| Chester | TOWN OF CHESTER WWTF | Water | — | No Violation Identified |
| Chinook | BLAINE COUNTY #1 | Air | — | No Violation Identified |
| Chinook | BLAINE COUNTY - BATTLE CREEK 318 PERMIT | Water | — | No Violation Identified |
| Chinook | BLAINE COUNTY BATTLE CREEK BRIDGE UPGRADE 318 | Water | — | No Violation Identified |
| Chinook | BLAINE COUNTY MOSQUITO CONTROL PESTICIDE | Water | — | Violation Identified |
| Chinook | CHINOOK CITY OF-TP FOR MILK RIVER SOURCE | Water, Drinking water | — | No Violation Identified |
| Chinook | CHINOOK SCHOOL DISTRICT 10 | Hazardous waste | — | No Violation Identified |
| Chinook | CHINOOK WWTP | Water | — | No Violation Identified |
| Chinook | EDGAR G OBIE AIRPORT | Water | — | Violation Identified |
| Chinook | HAVRE PIPELINE CO MILK RIVER CROSSING 318 | Water | — | No Violation Identified |
| Chinook | HELENA SAND AND GRAVEL - DETOUR - BLAINE COUNTY | Water | — | No Violation Identified |
| Chinook | JAMIESON MOTORS INC | Hazardous waste | — | No Violation Identified |
| Chinook | SLETTEN CONSTRUCTION BATTLE CREEK BRIDGE REPLACEMENT | Water | — | No Violation Identified |
| Chinook | TP CONSTRUCTION - MILK RIVER CHINOOK 318 | Water | — | No Violation Identified |
| Chinook | TP CONSTRUCTION MILK RIVER 318 PERMIT | Water | — | No Violation Identified |
| Chinook | WESLEY RANDY REED MILK RIVER BANK STABILIZATION 318 | Water | — | No Violation Identified |
| Choteau | BOUMA TRUCK SALES | Hazardous waste | — | No Violation Identified |
| Choteau | BREEN TIRE FACTORY | Hazardous waste | — | No Violation Identified |
| Choteau | CHOTEAU CITY OF | Drinking water | — | No Violation Identified |
| Choteau | CHOTEAU HIGH SCHOOL | Hazardous waste | — | No Violation Identified |
| Choteau | CITY OF CHOTEAU | Water | — | No Violation Identified |
| Choteau | CITY OF CHOTEAU- UNNAMED WATER | Water | — | No Violation Identified |
| Choteau | HYDROWORKS LLP DEEP CREEK RANCH | Water | — | No Violation Identified |
| Choteau | NEW ROCKPORT COLONY INC | Water | — | No Violation Identified |
| Choteau | NORTH MONTANA FEEDERS INC | Water | — | Violation Identified |
| Choteau | ON SITE MANAGEMENT - DIAMOND 4D RANCH | Water | — | No Violation Identified |
| Choteau | ROCKY MOUNTAIN RANGER DISTRICT OFFICE | Hazardous waste | — | No Violation Identified |
| Choteau | TCA INC - MUDDY CREEK 318 PERMIT | Water | — | No Violation Identified |
| Choteau | WESTERN FEDERAL LANDS HIGHWAY DIVISION - NORTH FORK TETON RIVER RD PH 2 MT PFH 7 | Water | — | No Violation Identified |
| Circle | CHS NUTRITION - CIRCLE | — | — | — |
| Circle | CIRCLE HIGH SCHOOL SHOP | Hazardous waste | — | No Violation Identified |
| Circle | CIRCLE TOWN OF | Drinking water | — | No Violation Identified |
| Circle | FARMERS UNION OIL COMPANY CIRCLE | Hazardous waste | — | No Violation Identified |
| Circle | HARRIS SPRAYING INC. | — | 1 | — |
| Circle | TOWN OF CIRCLE - WASTE WATER TREATMENT FACILITIES REHAB | Water | — | No Violation Identified |
| Circle | TOWN OF CIRCLE WWTP | Water | — | Violation Identified |
| Circle | TRANSCANADA KEYSTONE PIPELINE MCCONE COUNTY 318 | Water | — | No Violation Identified |
| Clancy | ASH GROVE CEMENT CO - MONTANA CITY PLANT | Air, Water, Hazardous waste | — | Violation Identified |
| Clancy | CIY/COUNTY SANITATION SERVICES | Air | — | No Violation Identified |
| Clancy | CLANCY ELEMENTARY SCHOOL DIST 01-TP FOR WELL 1 | Drinking water | — | No Violation Identified |
| Clancy | ELKHORN REHABILITATION CENTER LLC | Water | — | Violation Identified |
| Clancy | FOREST PARK WATER USERS ASSOCIATION | Drinking water | — | No Violation Identified |
| Clancy | JEFFERSON TRACTS ASSOC INC | Drinking water | — | No Violation Identified |
| Clancy | LEGAL TENDER PUB AND BISTRO LLC-TREATMENT PLANT | Drinking water | — | Inactive |
| Clancy | MARKS MILLER POST AND POLE | Water, Hazardous waste | — | Violation Identified |
| Clancy | MONTANA CITY SCHOOL DIST 27-TREATMENT PLANT 2 FILT/SOFT/ARSE | Drinking water | — | No Violation Identified |
| Clancy | NORTHWESTERN ENERGY - CLANCY TO JEFFERSON CITY POWER LINE 318 | Water | — | No Violation Identified |
| Clancy | SADDLE MOUNTAIN CORP CLANCY | Drinking water | — | No Violation Identified |
| Clancy | STONEY BROOK VILLAGE CONDOMINIUM ASSOC | Drinking water | — | No Violation Identified |
| Clancy | STONEY BROOK VILLAGE CONDOS | Water | — | Significant Violation |
| Clinton | NORTH AVENUE REFINISHING | Hazardous waste | — | No Violation Identified |
| Clinton | TURAH STORE AND CAMPGROUND | Hazardous waste | — | No Violation Identified |
| Clyde Park | CLYDE PARK WATER DEPT | Drinking water | — | No Violation Identified |
| Clyde Park | CRAZY MOUNTAIN RANCH EMPLOYEE HOUSING-TREATMENT PLANT | Water, Drinking water | — | No Violation Identified |
| Clyde Park | CRAZY MOUNTAIN RANCH WASTEWATER FACILITY | Water, Hazardous waste | — | No Violation Identified |
| Clyde Park | CRAZY MOUNTAIN RANCH-TREATMENT PLANT WELLS 2, 3 | Drinking water | — | No Violation Identified |
| Clyde Park | MONTANA FWP SHIELDS RIVER DIVERSION DAM REPAIR 318 | Water | — | No Violation Identified |
| Clyde Park | PARK COUNTY - ROCK CREEK - CLYDE PARK | Water | — | No Violation Identified |
| Coffee Creek | CENTRAL MONTANA RAILROAD - SURPRISE CREEK 318 PERMIT | Water | — | No Violation Identified |
| Coffee Creek | NEMECS REPAIR | Hazardous waste | — | No Violation Identified |
| Colstrip | BIG SKY MINE | Water, Hazardous waste | — | No Violation Identified |
| Colstrip | CITY OF COLSTRIP - CASTLE ROCK LAKE PESTICIDE | Water | — | Violation Identified |
| Colstrip | CITY OF COLSTRIP CASTLE ROCK LAKE 308 | Water | — | No Violation Identified |
| Colstrip | CITY OF COLSTRIP CITY SHOP | Hazardous waste | — | No Violation Identified |
| Colstrip | CITY OF COLSTRIP WTP | Water | — | No Violation Identified |
| Colstrip | COLSTRIP CITY OF | Drinking water | — | No Violation Identified |
| Colstrip | COLSTRIP STEAM ELECTRIC STATION - BORROW AREA | Water | — | No Violation Identified |
| Colstrip | COLSTRIP WWTP | Water | — | No Violation Identified |
| Colstrip | OFTEDAL CONSTRUCTION INC | Water | — | Violation Identified |
Alphabetical order — this site ranks no one. Figures as published by the EPA in ECHO for the last five years. Select a name for identifiers (EPA ID, NPDES, air), program-by-program status and the quarterly history. How to read this.