Smaller places in Montana — page 4 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 |
|---|---|---|---|---|
| Gardiner | YELLOWSTONE NATIONAL PARK NORTH ENTRANCE GARDNER RIVER 318 | Water | — | No Violation Identified |
| Garrison | FRONTIER WEST LLC LITTLE BLACKFOOT 318 PERMIT | Water | — | No Violation Identified |
| Garrison | POWELL COUNTY - MDT BR-MT9039 (38) LITTLE BLACKFOOT RIVER 3MI E OF GARRISON | Water | — | No Violation Identified |
| Garrison | SLETTEN CONSTRUCTION CO CLARK FORK RIVER & ROCK CREEK 318 PERMIT | Water | — | No Violation Identified |
| Geraldine | GERALDINE HIGH SCHOOL 0214 | Hazardous waste | — | No Violation Identified |
| Geraldine | GERALDINE TOWN OF | Drinking water | — | No Violation Identified |
| Geraldine | GMOL GERALDINE ELEVATOR | Hazardous waste | — | No Violation Identified |
| Geraldine | SANDY ARROW RANCH | Hazardous waste | — | No Violation Identified |
| Geraldine | TOWN OF GERALDINE WWTF | Water | — | No Violation Identified |
| Gildford | GILDFORD COLONY INC. | Water | — | No Violation Identified |
| Girard | ALBIN FARMS 31X-31 | Air | 1 | No Violation Identified |
| Glacier | MANY GLACIER WWTF | Water | — | No Violation Identified |
| Glacier County | MERIWETHER COMPRESSOR STATION | Air | — | No Violation Identified |
| Glen | KALSTA RANCH CO KALSTA SPRING CREEK 318 | Water | — | No Violation Identified |
| Gold Creek | GJC LLC - GOLD CREEK | Water | — | No Violation Identified |
| Gold Creek | MRL BRIDGE 59 CLARK FORK RIVER PIER REPAIR 318 | Water | — | No Violation Identified |
| Gold Creek | USDOE BPA GARRISON SUBSTATION | Hazardous waste | — | No Violation Identified |
| Gold Creek | YELLOWSTONE PIPE LINE CO - GOLD CREEK 318 PERMIT | Water | — | No Violation Identified |
| Gold Creek | YELLOWSTONE PIPELINE CO CLARK FOR AT GOLD CREEK 318 | Water | — | No Violation Identified |
| Grant | EDWARD T COPPS CONSTRUCTION - HORSE PRAIRIE CREEK 318 PERMIT | Water | — | No Violation Identified |
| Grass Range | GRASS RANGE TOWN OF | Drinking water | — | No Violation Identified |
| Grass Range | TOWN OF GRASS RANGE WWTP | Water | — | No Violation Identified |
| Greenough | HARRY GREATHOUSE MULTI SITE SUCTION DREDGE | Water | — | No Violation Identified |
| Greenough | LUBRECHT EXPERIMENTAL FOREST-TREATMENT PLANT | Drinking water | — | No Violation Identified |
| Greenough | THE RESORT AT PAWS UP PAWS UP RANCH | Hazardous waste | — | No Violation Identified |
| Greycliff | NEAL STRUCTURE REPAIR YELLOWSTONE RIVER 318 | Water | — | No Violation Identified |
| Greycliff | SWEET GRASS COUNTY YELLOWSTONE RIVER LEFT BANK EROSION MITIGATION | Water | — | No Violation Identified |
| Greycliff | SWEET GRASS COUNTY YELLOWSTONE RIVER RIPRAP REMOVAL 318 | Water | — | No Violation Identified |
| Hall | EAGLE STUD | Hazardous waste | — | No Violation Identified |
| Hammond | BISON PIPELINE LLC CARTER COUNTY PIPELINE 318 | Water | — | No Violation Identified |
| Hammond | BISON PIPELINE LLC CARTER COUNTY PIPELINE 318 | Water | — | No Violation Identified |
| Hammond | CARTER COUNTY - BOXELDER CREEK BRIDGE REPLACEMENT BR 9006 | Water | — | No Violation Identified |
| Hammond | CARTER COUNTY - WHITETAIL BRIDGE | Water | — | No Violation Identified |
| Hammond | CARTER COUNTY - WHITETAIL CREEK BRIDGE REPLACEMENT BR 277-1 | Water | — | No Violation Identified |
| Harlem | BUREAU OF INDIAN AFFAIRS FACILITY | Hazardous waste | — | No Violation Identified |
| Harlem | DICK ANDERSON CONSTRUCTION - MILK RIVER BRIDGE REPLACEMENT 318 | Water | — | No Violation Identified |
| Harlem | HARLEM AIRPORT BORROW PIT | Water | — | Violation Identified |
| Harlem | HARLEM CITY OF | Drinking water | — | Violation Identified |
| Harlem | HARLEM WTP | Water | — | No Violation Identified |
| Harlem | SLETTEN CONSTRUCTION - MDT MILK RIVER 318 | Water | — | No Violation Identified |
| Harlowton | CITY OF HARLOWTON - OIL SKIMMER | Water | — | — |
| Harlowton | CITY OF HARLOWTON WWTF | Water | — | Significant Violation |
| Harlowton | ES STONE: SITE #6 (COONEY/MOORE) | Water | — | No Violation Identified |
| Harlowton | HARLOWTON CITY OF | Drinking water | — | No Violation Identified |
| Harlowton | JONES QUARRY | Water | — | Violation Identified |
| Harlowton | JUDITH GAP ENERGY LLC | Water | — | No Violation Identified |
| Harlowton | NORTHWESTERN ENERGY 318 PERMIT | Water | — | No Violation Identified |
| Harlowton | TOMS BODY SHOP | Hazardous waste | — | No Violation Identified |
| Harlowton | WHEATLAND COUNTY MOSS AND MOSQUITO CONTROL | Water | — | No Violation Identified |
| Harlowton | WHEATLAND MEMORIAL HOSPITAL | Water | — | — |
| Harlowton | WICKENS CONSTRUCTION MDOT LEBO CREEK BRIDGE REMOVAL 318 | Water | — | No Violation Identified |
| Harrison | LAND OF MAGIC STEAKHOUSE-TREATMENT PLANT | Drinking water | — | No Violation Identified |
| Hathaway | WILLISTON BASIN - HATHAWAY STATION | Air | — | No Violation Identified |
| Hays | JOHN CAPTURE WASTEWATER TREATMENT FACILITY | Water | — | — |
| Hays | ST. PAULS MISSION SCHOOL WATER-TREATMENT PLANT | Drinking water | — | Inactive |
| Heart Butte | HEART BUTTE SCHOOL | Drinking water | — | No Violation Identified |
| Heart Butte | HEART BUTTE SCHOOL-TREATMENT HOUSE/PUMP FACILITY | Drinking water | — | Violation Identified |
| Heart Butte | HEART BUTTE USED OIL COLLECTION SITE | Hazardous waste | — | No Violation Identified |
| Hedgesville | MK WEEDEN CONSTRUCTION - K 4 OVERBURDEN SITE | Water | — | No Violation Identified |
| Highwood | HIGHWOOD COUNTY WATER AND SEWER DISTRICT | Drinking water | — | No Violation Identified |
| Highwood | HIGHWOOD WWTP | Water | 2 | Violation Identified |
| Highwood | MT DEPT OF TRANSPORTATION - UNNAMED TRIBUTARY OF HIGHWOOD CREEK 318 PERMIT | Water | — | No Violation Identified |
| Highwood | SLETTEN CONSTRUCTION - BELT CREEK 318 PERMIT | Water | — | No Violation Identified |
| Highwood | SOUTH CHOUTEAU COUNTY WATER DIST-TREATMENT PLANT | Drinking water | 1 | Violation Identified |
| Hilger | CR KENDALL CORP KENDALL MINE | Hazardous waste | — | No Violation Identified |
| Hilger | CR KENDALL CORP - KENDALL MINE | Water | — | No Violation Identified |
| Hilger | CR KENDALL MINE MASON CANYON 318 PERMIT | Water | — | No Violation Identified |
| Hilger | SLETTEN CONSTRUCTION MDOT WARM SPRINGS CREEK 318 | Water | — | No Violation Identified |
| Hinsdale | HINSDALE WATER AND SEWER DISTRICT | Water | — | No Violation Identified |
| Hinsdale | HINSDALE WATER DEPARTMENT | Drinking water | — | Violation Identified |
| Hinsdale | VALLEY COUNTY RD DEPT - COPENHAVER PIT | Water | — | No Violation Identified |
| Hobson | HOBSON SEWAGE TREATMENT PLANT | Water | — | No Violation Identified |
| Hobson | JUDITH BASIN COUNTY FARMS LTD | Water | — | Significant Violation |
| Hobson | TOWN OF HOBSON | Drinking water | — | No Violation Identified |
| Hobson | WICKENS CONSTRUCTION - TRIBS TO JUDITH RIVER 318 PERMIT | Water | — | No Violation Identified |
| Hobson | YUKON MINE | Water | — | No Violation Identified |
| Hogeland | MCGUIRE'S SHOP | — | 1 | — |
| Homestead | HOMESTEAD | Hazardous waste | — | No Violation Identified |
| Hot Springs | ALAMEDAS HOT SPRINGS RETREAT | Water | — | — |
| Hot Springs | HOT SPRINGS, TOWN OF | Water | — | Violation Identified |
| Hot Springs | SYMES HOT SPRINGS HOTEL AND MINERAL BATHS | Water | — | Violation Identified |
| Hot Springs | WILD HORSE HOT SPRINGS | Water | — | No Violation Identified |
| Hungry Horse | GLACIER BIBLE CAMP-TP AT LODGE SERVICE CONNECTION | Drinking water | — | No Violation Identified |
| Hungry Horse | HUNGRY HORSE FIELD OFFICE BUR OF REC US DOI | Hazardous waste | — | No Violation Identified |
| Hungry Horse | HUNGRY HORSE WASTEWATER TREATMENT PLANT | Water | — | No Violation Identified |
| Hungry Horse | USDA USFS R01 FLATHEAD NATIONAL FOREST GOLDIE & BEN CREEKS 318 PERMIT | Water | — | No Violation Identified |
| Huntley | DONNES CONSTRUCTION | Water | — | No Violation Identified |
| Huntley | DONNES CONSTRUCTION | Water | — | No Violation Identified |
| Huntley | MONTANA RAIL LINK - YELLOWSTONE RIVER HUNTLEY MP 214.1 BANK STABILIZATION 318 | Water | — | No Violation Identified |
| Huson | GARDEN CITY FUNGI | — | 1 | — |
| Huson | NINE MILE RANGER STATION AND PA-TP FOR SPRING | Drinking water | — | No Violation Identified |
| Hysham | HYSHAM TOWN OF | Drinking water | 2 | No Violation Identified |
| Hysham | PV RANCH COMPANY FEEDLOT | Water | — | No Violation Identified |
| Hysham | ROMINE RANCH | Hazardous waste | — | No Violation Identified |
| Hysham | SLETTEN CONSTRUCTION MDOT SARPY CREEK BRIDGE REMOVE REPLACE | Water | — | No Violation Identified |
| Hysham | TOWN OF HYSHAM | Water | — | Violation Identified |
| Hysham | VECTA OIL AND GAS LTD | Water | — | Violation Identified |
| Hysham | WESTMORELAND RESOURCES ABSOLOKA MINE - WEST WYE AT SARPY JUNCTION | Water | — | No Violation Identified |
| Hysham | WESTMORELAND RESOURCES TREASURE COUNTY WETLANDS 318 | Water | — | No Violation Identified |
| Hysham | WILLEMS FARMS AND FEEDLOT | Water | — | No Violation Identified |
| Ingomar | INGOMAR WATER DISTRICT-TREATMENT PLANT | Drinking water | — | No Violation Identified |
| Jefferson City | MONTANA TUNNELS MINING INC | Water, Hazardous waste | — | No Violation Identified |
| Jens | YELLOWSTONE PIPE LINE CO DUNKLEBERG CREEK 318 | Water | — | No Violation Identified |
| Joliet | CENTANA FEED YARD LLC | Water | — | No Violation Identified |
| Joliet | EXXONMOBIL PIPELINE CO ROCK CREEK PIPELINE REPLACE 318 | Water | — | No Violation Identified |
| Joliet | JOLIET HIGH SCHOOL | Hazardous waste | — | No Violation Identified |
| Joliet | JOLIET TOWN OF | Drinking water | — | Violation Identified |
| Joliet | JOLIET WWTP | Water | — | Significant Violation |
| Joliet | MONTANA RAILROAD SERVICES, INC | Water | — | No Violation Identified |
| Joliet | TRAPPER PEAK CONSTRUCTION MDOT CARBON COUNTY LINE EAST | Water | — | No Violation Identified |
| Joliet | TRAPPER PEAK CONSTRUCTION MDOT COW CREEK DRAINAGE 318 | Water | — | No Violation Identified |
| Jordan | EDWARD T COPPS CONSTRUCTION - BIG DRY CREEK BRIDGE REPAIR 13MI E OF JORDAN | Water | — | No Violation Identified |
| Jordan | GARFIELD CO DIST HIGH SCHOOL | Hazardous waste | — | No Violation Identified |
| Jordan | HELL CREEK RECREATION AREA LLC | Drinking water | — | No Violation Identified |
| Jordan | JCT SEC 462 EQUIPMENT YARD | Water | — | — |
| Jordan | JORDAN TOWN OF | Drinking water | — | Significant Violation |
| Jordan | MARTIN CONSTRUCTION - UNNAMED TRIBS TO BIG & LITTLE DRY CREEKS 318 PERMIT | Water | — | No Violation Identified |
| Jordan | SLETTEN CONSTRUCTION BIG DRY CREEK BRIDGE REPLACEMENT 318 | Water | — | No Violation Identified |
| Jordan | SLETTEN CONSTRUCTION MAXWELL COULEE BRIDGE REPLACEMENT 318 | Water | — | No Violation Identified |
| Jordan | TOWN OF JORDAN WASTEWATER TREATMETN FACILITY | Water | — | Significant Violation |
| Judith Gap | JUDITH GAP TOWN OF | Drinking water | — | No Violation Identified |
| Judith Gap | MT DNRC TRUST - MISSILE POND DAM | Water | — | No Violation Identified |
| Kershaw | CHS FERTILIZER FACILITY ADDITION | Water | — | No Violation Identified |
| Kevin | CHS TRANSPORTATION CRUDE OIL GATHERING | Water | — | No Violation Identified |
| Kevin | HAUGEN OIL WELL | Water | — | Violation Identified |
| Kevin | INTERMOUNTAIN CONSTRUCTION SERVICES - TOWN OF KEVIN WATER SYSTEM PH 2B AND 3 | Water | — | No Violation Identified |
| Kevin | KEVIN TOWN OF | Drinking water | — | No Violation Identified |
| Kevin | SHAY FEDERAL BATTERY | Water | — | Violation Identified |
| Kevin | SKELLY AND TEXACO OIL LEASES | Water | — | Violation Identified |
| Kevin | TOWN OF KEVIN WWTF | Water | — | No Violation Identified |
| Kila | EYES UP LLC-TREATMENT PLANT | Drinking water | — | No Violation Identified |
| Kila | SCHLEGEL AND SONS - FLATHEAD CO SOLID WASTE CORRIDOR CONTAINER SITE | Water | — | No Violation Identified |
| Kremlin | KREMLIN, MT | Hazardous waste | — | No Violation Identified |
| Lakeside | LAKESIDE CONTAINER SITE | Water | — | No Violation Identified |
| Lakeside | MACBEAR LP - BEAR MOUNTAIN SUBDIVISION | Water | — | No Violation Identified |
| Lambert | ALBIN STATION | Hazardous waste | — | No Violation Identified |
| Lambert | CHARLIE CREEK COMPRESSOR STATION | Air | — | No Violation Identified |
| Lambert | MARTIN CONSTRUCTION - MIDDLE FORK FOX CREEK | Water | — | No Violation Identified |
| Lame Deer | BIRNEY VILLAGE-BIRNEY VILLAGE TREATMENT PLANT | Drinking water | — | No Violation Identified |
| Lame Deer | BUREAU OF INDIAN AFFAIRS ROAD SHOP | Hazardous waste | — | No Violation Identified |
| Lame Deer | BUSBY COMMUNITY WATER SYSTEM-TREATMENT PLANT | Drinking water | — | Violation Identified |
| Lame Deer | CHIEF DULL KNIFE COLLEGE | Hazardous waste | — | No Violation Identified |
| Lame Deer | LAME DEER HEALTH CENTER | Hazardous waste | — | No Violation Identified |
| Lame Deer | LAME DEER HIGH SCHOOL-TREATMENT PLANT (CL & REVERSE OSMOSIS) | Drinking water | 4 | Violation Identified |
| Lame Deer | LAME DEER PUBLIC SCHOOL | Hazardous waste | — | No Violation Identified |
| Lame Deer | LAME DEER WATER SYSTEM-LAME DEER CREEK TREATMENT PLANT (SP08) | Drinking water | 3 | No Violation Identified |
| Lame Deer | NORTHERN CHEYENNE UTILITY COMMISSION WASTEWATER TREATMENT PLANT | Water, Hazardous waste | 1 | Significant Violation |
| Lanark | WILLIAMS 11-12 #2H WILLIAMS 11-12 #3H | Air | — | No Violation Identified |
| Lavina | GOLDEN VALLEY COUNTY - BIG COULEE CREEK - LAVINA | Water | — | No Violation Identified |
| Lavina | LAVINA SCHOOL DISTRICT-TP FOR WELL 2 | Drinking water | — | No Violation Identified |
| Lavina | TOWN OF LAVINA WWTF | Water | — | No Violation Identified |
| Lavina | WHITE CITY BREW PUB-TREATMENT | Drinking water | — | Inactive |
| Lennep | SK CONSTRUCTION MDOT BOZEMAN FORK CREEKCULVERT PLACEMENT 318 | Water | — | No Violation Identified |
| Lima | LIMA TOWN OF | Drinking water | — | No Violation Identified |
| Lima | RED ROCK LAKES NATIONAL WILDLIFE REFUGE | Hazardous waste | — | No Violation Identified |
| Lincoln | BLACKFOOT POST YARD | Hazardous waste | — | No Violation Identified |
| Lincoln | BOUMA POST YARDS | Water, Hazardous waste | — | No Violation Identified |
| Lincoln | COLUMBIA MINE PROJECT | Water | — | No Violation Identified |
| Lincoln | LINCOLN LOG HOTEL-TREATMENT PLANT | Drinking water | — | No Violation Identified |
| Lincoln | LINCOLN SCHOOL DISTRICT NO 38-TREATMENT PLANT FOR WELL 2 | Drinking water | — | No Violation Identified |
| Lincoln | MT STEAKHOUSE-TREATMENT PLANT | Drinking water | — | Violation Identified |
| Lincoln | SCHELLINGER CONSTRUCTION - ROAD RECONSTRUCTION ALICE CREEK LINCOLN | Water | — | No Violation Identified |
| Lincoln | STREAM WORKS INC - DUPUYER CREEK 318 PERMIT | Water | — | No Violation Identified |
| Lindsay | OAKS DISPOSAL SERVICES, LLC | Water | — | Violation Identified |
| Lloyd | GAS PRODUCTION: BLAINE COUNTY - BEAR PAW | Water | — | No Violation Identified |
| Lloyd | SLEEPY HOLLOW OIL AND GAS FEDERAL 15-1 SITE | Water | — | No Violation Identified |
| Lockwood | MONTANA RAIL LINK - YELLOWSTONE RIVER LOCKWOOD MP 215.4 BANK STABILIZATION 318 | Water | — | No Violation Identified |
| Lockwood | MONTANA RAIL LINK - YELLOWSTONE RIVER LOCKWOOD MP 218.2 BANK STABIL 318 | Water | — | No Violation Identified |
| Lockwood | PACIFIC STEEL AND RECYCLING - BILLINGS RECYCLING | Hazardous waste | — | No Violation Identified |
| Lockwood | PROJECT TELEPHONE - 2011 OSP CONSTRUCTION PROJECT FOR SCOTT ST PRYOR MIDDLE MILE | Water | — | No Violation Identified |
| Lockwood | TOWN PUMP TRAVEL PLAZA | Water | — | Violation Identified |
| Lodge Grass | 40 MILE COLONY WASTEWATER DEVELOPMENT | Water | — | No Violation Identified |
| Lodge Grass | BIG HORN COUNTY ELECTRIC CO-OP | Hazardous waste | — | No Violation Identified |
| Lodge Grass | FARMERS UNION OIL COMPANY | Hazardous waste | — | No Violation Identified |
| Lodge Grass | LODGE GRASS DRUM SITE | Hazardous waste | — | No Violation Identified |
| Lodge Grass | LODGE GRASS PHASE 2 WASTEWATER TREATMENT FACILITY IMPROVEMENTS | Water | — | No Violation Identified |
| Lodge Grass | LODGE GRASS PUBLIC SCHOOL | Water | — | No Violation Identified |
| Lodge Grass | LODGE GRASS WASTE WATER TREATMENT FACILITY | Water | — | No Violation Identified |
| Lodge Grass | LODGE GRASS, TOWN OF WWTF | Water | — | Significant Violation |
| Lodge Grass | LYLE NEAL LITTLE BIGHORN RIVER BANK STABILIZATION 318 | Water | — | No Violation Identified |
| Lodge Grass | MONTANA DEPARTMENT OF TRANSPORATION LODGE GRASS | Hazardous waste | — | No Violation Identified |
| Lodge Grass | MOSQUITO CONTROL LLC BIG HORN 308 | Water | — | No Violation Identified |
| Lodge Grass | RETAINING WALL – LODGE GRASS, BIG HORN COUNTY | Water | — | No Violation Identified |
| Lodge Grass | SUMMIT LINE CONSTRUCTION BIGHORN RIVER TRANSMISSION LINE 318 | Water | — | No Violation Identified |
| Lodgegrass | LODGEGRASS, TOWN OF | Drinking water | — | Violation Identified |
| Logan | MRL - GALLATIN RIVER REPAIR TO RR LINE 318 | Water | — | No Violation Identified |
| Lolo | BILLINGSLEY PLACER MINE | Water | — | Violation Identified |
| Lolo | CORNERSTONE CHURCH-TREATMENT PLANT | Drinking water | — | No Violation Identified |
| Lolo | KIEWIT INFRASTRUCTURE WEST SEGMENT 1 KEARL MODULE TRANSPORT | Water | — | No Violation Identified |
| Lolo | LIBERTY COVE INC JADEN MEADOWS CONDOS | Water | — | No Violation Identified |
| Lolo | LOLO RSID 8901 - LIFT STATION #1 | Water | — | Significant Violation |
| Lolo | LOLO WWTP | Water | — | No Violation Identified |
| Lolo | PROMARK INC LOLO | Hazardous waste | — | No Violation Identified |
| Lolo | QUALITY CONSTRUCTION LOLO VISTA APARTMENTS | Water | — | No Violation Identified |
| Lolo | TECE TRUCKING INC | Hazardous waste | — | No Violation Identified |
| Lolo | TOWN PUMP LOLO #2 | Hazardous waste | — | No Violation Identified |
| Lolo | WOODMAN SCHOOL DISTRICT 18-TREATMENT PLANT | Drinking water | — | No Violation Identified |
| Loma | LOMA COUNTY WATER DISTRICT | Drinking water | — | No Violation Identified |
| Lonepine | SK CONSTRUCTION MDOT LITTLE BITTERROOT RIVER 318 | Water | — | No Violation Identified |
| Loring | LORING HUTTERIAN BRETHREN INC | Drinking water | — | No Violation Identified |
| Lustre | COAL RIDGE LUSTRE SALT WATER DISPOSAL | Hazardous waste | — | No Violation Identified |
| Lustre | LARSLAN WATER DISPOSAL | Hazardous waste | — | No Violation Identified |
| Malmstrom Afb | MALMSTROM AIR FORCE BASE | Hazardous waste | — | No Violation Identified |
| Malmstrom Afb | MALMSTROM AIR FORCE BASE SMALL MS-4 | Water | — | Violation Identified |
| Malmstrom Afb | WEAPONS STORAGE FACILITY | Water | — | No Violation Identified |
| Malmstrom Air Force Base | MALMSTROM AIR FORCE BASE | Water | — | Violation Identified |
| Malmstrom Air Force Base | MALMSTROM AIR FORCE BASE HELICOPTER MAINTENANCE OPERATIONS HANGAR | Water | — | Violation Identified |
| Malta | EZZIES SHOP | Hazardous waste | — | No Violation Identified |
| Malta | EZZIES WHOLESALE INC | Hazardous waste | — | No Violation Identified |
| Malta | MALTA CITY OF | Drinking water | — | No Violation Identified |
| Malta | MALTA VEHICLE MAINTENANCE SHOP | Water | — | No Violation Identified |
| Malta | PHILLIPS COUNTY PESTICIDE APPLICATION | Water | — | No Violation Identified |
| Malta | TRANSCANADA KEYSTONE PIPELINE PHILLIPS COUNTY 318 | Water | — | No Violation Identified |
| Malta | UNITED PARCEL SERVICE-MALTA | Water | — | No Violation Identified |
| Malta | UPS MALTA CENTER | Hazardous waste | — | No Violation Identified |
| Malta | US FISH & WILDLIFE SERVICE (BOWDOIN NWR) | Hazardous waste | — | No Violation Identified |
| Marion | CANYON CREEK QUARRY | Water | — | No Violation Identified |
| Marion | COMPATIBLE MANUFACTURING INC | Hazardous waste | — | No Violation Identified |
| Marion | CRYSTAL LAKE FISHING ACCESS SITE FWP 318 PERMIT | Water | — | No Violation Identified |
| Marion | MONTANA ROCKWORKS - MOOSE MOUNTAIN QUARRY | Water | — | Violation Identified |
| Marion | MONTANA ROCKWORKS - SAW FACILITY (A.K.A MCGREGOR MEADOWS) | Water | — | No Violation Identified |
| Marion | MONTANA ROCKWORKS INC - MCGREGOR LAKE QUARRY | Water | — | Violation Identified |
| Marion | THOMPSON WETLAND AND STREAM MITIGATION BANK | Water | — | No Violation Identified |
| Martin City | MARTIN CITY WATER AND SEWER DIST | Drinking water | — | No Violation Identified |
| Martinsdale | DICK ANDERSON CONSTRUCTION - GORDON BUTTE WIND FARM | Water | — | No Violation Identified |
| Martinsdale | MK WEEDEN CONSTRUCTION MDOT N FORK MUSSELSHELL 318 | Water | — | No Violation Identified |
| Martinsdale | MK WEEDEN CONSTRUCTION SOUTH FORK MUSSELSHELL RIVER 318 | Water | — | No Violation Identified |
| Martinsdale | MT DEPT OF NATURAL RESOURCES MARTINSDALE RESERVOIR 318 PERMIT | Water | — | No Violation Identified |
| Martinsdale | NORTHWESTERN ENERGY SPRING CREEK 100KV TRANSMISSION LINE REPLACEMENT | Water | — | No Violation Identified |
| Martinsdale | ROSTAD RANCH WETLAND MITIGATION SITE | Water | — | No Violation Identified |
| Martinsdale | SK CONSTRUCTION MDT CHECKERBOARD MARTINSDALE EAST BRIDGE REMOVAL | Water | — | No Violation Identified |
| Martinsdale | TAMIETTI CONSTRUCTION MDOT NORTH FORK MUSSELSHELL RIVER 318 | Water | — | No Violation Identified |
| Martinsdale | TAMIETTI CONSTRUCTION MDT MUSSELSHELL RIVER 318 | Water | — | No Violation Identified |
| Martinsdale | WHEATLAND COUNTY LINE EAST | Water | — | No Violation Identified |
| Marysville | DRUMLUMMON GOLD CORP EXPLORATION SUPPORT SITE | Water | — | No Violation Identified |
| Marysville | DRUMLUMMON GOLD CORP SILVER CREEK 318 | Water | — | No Violation Identified |
| Marysville | DRUMLUMMON GOLD MINE | Water | — | No Violation Identified |
| Marysville | LEWIS AND CLARK COUNTY SILVER CREEK 318 PERMIT | Water | — | No Violation Identified |
| Medicine Lake | MEDICINE LAKE TOWN OF-TREATMENT PLANT FOR WELL 1 | Drinking water | — | No Violation Identified |
| Medicine Lake | MEDICINE LAKE AG SUPPLY | — | — | — |
| Medicine Lake | SHERIDAN ELECTRIC COOPERATIVE | Hazardous waste | — | No Violation Identified |
| Medicine Lake | SHERIDAN ELECTRIC NEW HEADQUARTERS | Water | — | No Violation Identified |
| Medicine Lake | US FISH AND WILDLIFE SERVICE (MEDICINE LAKE NWR) | Water, Hazardous waste | — | No Violation Identified |
| Melrose | SOLVAY - MAIDEN ROCK MINE | Hazardous waste | — | No Violation Identified |
| Melsrose | ANDY BAUGH - SILVER SPRING MINE | Water | — | No Violation Identified |
| Melstone | MELSTONE TOWN OF | Drinking water | — | Violation Identified |
| Melstone | MUSSELSHELL COUNTY MUSSELSHELL RIVER BANK STABILIZATION 318 | Water | — | No Violation Identified |
| Melstone | TCA LLC - HARVEY ROAD BRIDGE MUSSELSHELL RIVER | Water | — | No Violation Identified |
| Melville | EDWARD T COPPS CONSTRUCTION MDT SWEETGRASS CREEK 318 | Water | — | No Violation Identified |
| Mildred | SLETTEN CONSTRUCTION CABIN CREEK 318 | Water | — | No Violation Identified |
| Mildred | SLETTEN CONSTRUCTION MCNANEY CREEK 318 | Water | — | No Violation Identified |
| Mildred | TRANSCANADA KEYSTONE PIPELINE PRAIRIE COUNTY 318 | Water | — | No Violation Identified |
| Milltown | MATSONS LABORATORY | Hazardous waste | — | No Violation Identified |
| Milltown | MILLTOWN WATER USERS ASSOC | Drinking water | — | No Violation Identified |
| Milltown | TOWN PUMP BONNER | Water | — | No Violation Identified |
| Milltown | TOWN PUMP BONNER | Water | — | No Violation Identified |
| Milltown | YELLOWSTONE PIPELINE CO CLARK FORK MILLTOWN CROSSING 318 | Water | — | No Violation Identified |
| Missoula County | MISSOULA COUNTY PUBLIC SCHOOLS VO-AG CENTER | Water | — | Violation Identified |
| Molt | STEALTH ENERGY USA - LITTLE BASIN - HAILSTONE 23-1 AND 2 | Water | — | No Violation Identified |
| Monarch | BARKER HUGHESVILLE MINING DISTRICT | — | 1 | — |
| Monarch | CASCADE COUNTY PWD - DRY FORK BRIDGE 318 | Water | — | No Violation Identified |
| Monarch | COUGAR CANYON LODGE-TEMPORARY TREATMENT PLANT WELL 1 | Drinking water | — | No Violation Identified |
| Monarch | MONARCH SCHOOL | Drinking water | — | No Violation Identified |
| Montana City | ELKHORN CONGREGATION OF JEHOVAHS WITNESS-TREATMENT PLANT | Drinking water | — | No Violation Identified |
| Montana City | NATURE STORY MONTESSORI UNAPPROVED-TREATMENT PLANT | Drinking water | — | Inactive |
| Moore | FULL CURL SMOKERS-TREATMENT PLANT | Drinking water | — | No Violation Identified |
| Moore | MDOT FERGUS COUNTY ROSS FORK CREEK 318 | Water | — | No Violation Identified |
| Moore | MOORE TOWN OF | Drinking water | — | Violation Identified |
| Moore | TOWN OF MOORE PUBLIC SCHOOL | Water | — | No Violation Identified |
| Mosby | R AND A OIL INC - STATE RATTLER #1 | Water | — | No Violation Identified |
| Mosby | STATE RATTLER 1 43-16 | Water | — | Violation Identified |
| Muddy | MUDDY CLUSTER LAGOONS | Water | — | No Violation Identified |
| Musselshell | LOWER MUSSELSHELL CONSERVATION DISTRICT DELPHIA MELSTONE CANAL REPAIR | Water | — | No Violation Identified |
| Nashua | MARTIN CONSTRUCTION MDT VALLEY COUNTY CULVERT 318 | Water | — | No Violation Identified |
| Nashua | NASHUA TOWN OF | Drinking water | — | Violation Identified |
| Nashua | TOWN OF NASHUA WWTF | Water | — | No Violation Identified |
| Nashua | WILLISTON BASIN - FORT PECK STATION | Air | — | No Violation Identified |
| Neihart | MT DEPT OF TRANSPORTATION UNNAMED TRIB TO BELT CREEK 318 PERMIT | Water | — | No Violation Identified |
| Neihart | NEIHART TOWN OF | Drinking water | — | Violation Identified |
| Neihart | TOWN OF NEIHART SHORTY CREEK 318 | Water | — | No Violation Identified |
| Nelson | YELLOWSTONE PIPE LINE CO BEAVER CREEK 318 | Water | — | No Violation Identified |
| Nelson | YELLOWSTONE PIPE LINE CO BEAVER CREEK AREA EXPOSURE REPAIRS 318 | Water | — | No Violation Identified |
| Nelson | YELLOWSTONE PIPELINE CO - (SIEBEN) BEAVER CREEK 318 PERMIT | Water | — | No Violation Identified |
| Nelson | YELLOWSTONE PIPELINE CO - BEAVER CREEK (STATION 1185+84) 318 PERMIT | Water | — | No Violation Identified |
| Nelson | YELLOWSTONE PIPELINE CO BEAVER CREEK TO HAUSER LAKE 318 | Water | — | No Violation Identified |
| Nimrod | MRL BRIDGE 90 REPAIR CLARK FORK RIVER 318 | Water | — | No Violation Identified |
| Norris | A M WELLES | Hazardous waste | — | No Violation Identified |
| Norris | NORRIS LAB | Hazardous waste | — | No Violation Identified |
| Noxom | JEHOVAHS WITNESSES NOXON KINGDOM HALL-TREATMENT PLANT | Drinking water | — | No Violation Identified |
| Noxon | MT-200 BRIDGE PRES MP 17 STRUCTURE ID 05270 | Hazardous waste | — | No Violation Identified |
| Noxon | NOXON HYDROELECTRIC POWER STATION | Hazardous waste | — | No Violation Identified |
| Noxon | NOXON WATER DISTRICT | Drinking water | — | No Violation Identified |
| Noxon | RC RESOURCES INC - ROCK CREEK 318 PERMIT | Water | — | No Violation Identified |
| Noxon | SILVER TIP JUNCTION-TREATMENT PLANT | Drinking water | — | Violation Identified |
| Nye | CARTERS CAMP NYE-TREATMENT PLANT | Drinking water | — | No Violation Identified |
| Nye | SMC NYE MINE SITE | Air, Water, Hazardous waste | — | Violation Identified |
| Nye | STILLWATER MINE | Water | — | No Violation Identified |
| Oilmont | SOMONT OIL CO INC WOODS TANK BATTERY | Water | — | Violation Identified |
| Olney | DOG CREEK LODGE-TREATMENT PLANT | Drinking water | — | No Violation Identified |
| Olney | GLACIER GOLD LLC | Water | — | Significant Violation |
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.