U.S. water systems

Missouri Water Systems

Missouri

2,134 community water systems on record — 1,432 active, 702 inactive.

Every active community water system nationwide must produce a Consumer Confidence Report under the EPA's revised rule, effective for reports due July 1, 2027.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Missouri’s official records. Always confirm current status with Missouri before making decisions based on this information.

Counties in Missouri

Adair County (4)Andrew County (13)Atchison County (7)Audrain County (12)Barry County (33)Barton County (7)Bates County (15)Benton County (34)Bollinger County (5)Boone County (32)Buchanan County (8)Butler County (27)Caldwell County (11)Callaway County (22)Camden County (102)Cape Girardeau County (37)Carroll County (10)Carter County (6)Cass County (38)Cedar County (12)Chariton County (10)Christian County (50)Clark County (5)Clay County (24)Clinton County (11)Cole County (24)Cooper County (10)Crawford County (14)Dade County (7)Dallas County (8)Daviess County (12)DeKalb County (9)Dent County (4)Douglas County (2)Dunklin County (16)Franklin County (71)Gasconade County (12)Gentry County (7)Greene County (54)Grundy County (8)Harrison County (9)Henry County (13)Hickory County (13)Holt County (8)Howard County (10)Howell County (13)Iron County (14)Jackson County (28)Jasper County (29)Jefferson County (107)Johnson County (26)Knox County (3)Laclede County (8)Lafayette County (16)Lawrence County (17)Lewis County (6)Lincoln County (49)Linn County (10)Livingston County (12)Macon County (9)Madison County (6)Maries County (6)Marion County (6)McDonald County (14)Mercer County (7)Miller County (24)Mississippi County (7)Moniteau County (7)Monroe County (6)Montgomery County (15)Morgan County (24)New Madrid County (19)Newton County (34)Nodaway County (15)Oregon County (5)Osage County (13)Ozark County (8)Pemiscot County (12)Perry County (12)Pettis County (24)Phelps County (34)Pike County (8)Platte County (21)Polk County (23)Pulaski County (38)Putnam County (4)Ralls County (4)Randolph County (10)Ray County (11)Reynolds County (3)Ripley County (5)Saline County (16)Schuyler County (5)Scotland County (3)Scott County (28)Shannon County (3)Shelby County (5)St. Charles County (51)St. Clair County (6)St. Francois County (32)St. Louis County (22)St. Louis city County (2)Ste. Genevieve County (8)Stoddard County (19)Stone County (134)Sullivan County (11)Taney County (83)Texas County (11)Vernon County (14)Warren County (31)Washington County (18)Wayne County (18)Webster County (15)Worth County (4)Wright County (8)

All community water systems in Missouri

System name	Mailing city	Population served	Status
MO AMERICAN ST LOUIS ST CHARLES COUNTIES	CHESTERFIELD	1,111,000	Active
KANSAS CITY PWS	KANSAS CITY	553,295	Active
ST LOUIS CITY PWS	ST LOUIS	304,709	Active
CITY UTILITIES OF SPRINGFIELD	SPRINGFIELD	210,898	Active
CITY OF COLUMBIA UTILITIES	COLUMBIA	126,254	Active
INDEPENDENCE PWS	INDEPENDENCE	120,000	Active
ST CHARLES COUNTY PWSD 2	O'FALLON	100,587	Active
LEES SUMMIT PWS	LEES SUMMIT	99,400	Active
MO AMERICAN ST JOSEPH	ST JOSEPH	89,171	Active
ST CHARLES PWS	ST CHARLES	78,961	Active
MO AMERICAN JOPLIN	JOPLIN	73,728	Active
MO AMERICAN ST CHARLES	COTTLEVILLE	73,000	Inactive
BLUE SPRINGS PWS	BLUE SPRINGS	61,084	Active
ST PETERS PWS	ST PETERS	52,575	Active
WENTZVILLE PWS	WENTZVILLE	41,784	Active
UNIVERSITY OF MISSOURI COLUMBIA	COLUMBIA	40,000	Active
CAPE GIRARDEAU PWS	CAPE GIRARDEAU	39,941	Active
FLORISSANT	FLORISSANT	38,046	Inactive
JEFFERSON CO CONS PWSD C 1	BARNHART	37,000	Active
FORT LEONARD WOOD	FORT LEONARD WOOD	34,000	Active
OFALLON PWS	O FALLON	32,515	Active
LIBERTY PWS	LIBERTY	30,800	Active
MO AMERICAN JEFFERSON CITY DISTRICT	JEFFERSON CITY	30,075	Active
KIRKWOOD PWS	KIRKWOOD	28,000	Active
GLADSTONE PWS	GLADSTONE	27,000	Active
BOONE COUNTY CONS PWSD 1	COLUMBIA	24,700	Active
NIXA PWS	NIXA	24,532	Active
JACKSON COUNTY PWSD 1	GRANDVIEW	24,500	Active
BELTON PWS	BELTON	23,598	Active
WEBSTER GROVES	WEBSTER GROVES	23,095	Inactive
OZARK PWS	OZARK	22,000	Active
SEDALIA PWS	SEDALIA	21,725	Active
RAYMORE PWS	RAYMORE	21,517	Active
JEFFERSON COUNTY PWSD 1	ARNOLD	21,113	Active
ROLLA PWS	ROLLA	20,800	Active
MO AMERICAN WARRENSBURG	JOPLIN	18,500	Active
FARMINGTON PWS	FARMINGTON	18,217	Active
KIRKSVILLE PWS	KIRKSVILLE	17,566	Active
HANNIBAL PWS	HANNIBAL	17,108	Active
RAYTOWN WATER COMPANY	RAYTOWN	17,066	Active
POPLAR BLUFF PWS	POPLAR BLUFF	17,043	Active
JEFFERSON COUNTY PWSD 3	ARNOLD	17,000	Active
MO AMERICAN PLATTE COUNTY	ST JOSEPH	16,645	Active
COLE COUNTY PWSD 1	JEFFERSON CITY	16,548	Active
JEFFERSON COUNTY PWSD 2	EUREKA	16,548	Active
JACKSON COUNTY PWSD 2	RAYTOWN	16,440	Active
SIKESTON PWS	SIKESTON	16,291	Active
REPUBLIC PWS	REPUBLIC	16,100	Active
GRAIN VALLEY PWS	GRAIN VALLEY	16,000	Active
LEBANON PWS	LEBANON	15,442	Active
BOONE COUNTY PWSD 9	COLUMBIA	15,035	Active
JACKSON PWS	JACKSON	15,000	Active
TROY PWS	TROY	15,000	Active
CARTHAGE PWS	CARTHAGE	14,600	Active
WASHINGTON PWS	WASHINGTON	14,068	Active
LINCOLN COUNTY PWSD 1	WINFIELD	14,000	Active
MOBERLY PWS	MOBERLY	13,783	Active
WEBB CITY PWS	WEBB CITY	13,404	Active
ST CHARLES CO. PWSD #2- NOR	O'FALLON	13,400	Inactive
COLE COUNTY PWSD 2	JEFFERSON CITY	13,107	Active
CALLAWAY 2 WATER DISTRICT	FULTON	13,080	Active
FESTUS PWS	FESTUS	13,000	Active
MO AMERICAN MEXICO	COTTLEVILLE	13,000	Active
MARSHALL PWS	MARSHALL	12,934	Active
MACON CO PWSD 1	MACON	12,865	Active
WEST PLAINS PWS	WEST PLAINS	12,864	Active
BRANSON PWS	BRANSON	12,640	Active
FULTON PWS	FULTON	12,600	Active
JOHNSON COUNTY PWSD 2	HOLDEN	12,490	Active
UNION PWS	UNION	12,348	Active
NEOSHO PWS	NEOSHO	12,157	Active
BUTLER COUNTY PWSD 1	POPLAR BLUFF	12,000	Active
CAMERON PWS	CAMERON	11,963	Active
KEARNEY PWS	KEARNEY	11,500	Active
HENRY COUNTY WATER COMPANY	CLINTON	11,373	Active
THOMAS HILL PWSD 1	MOBERLY	11,250	Active
EXCELSIOR SPRINGS PWS	EXCELSIOR SPRINGS	11,084	Active
LIBERTY UTILITIES BOLIVAR	AURORA	11,000	Active
MO AMERICAN EUREKA	CHESTERFIELD	11,000	Inactive
SMITHVILLE PWS	SMITHVILLE	10,885	Active
MARYVILLE PWS	MARYVILLE	10,775	Active
KENNETT PWS	KENNETT	10,200	Active
CHILLICOTHE MUNICIPAL UTILITIES PWS	CHILLICOTHE	10,187	Active
WHITEMAN AIR BASE	WHITEMAN AFB	10,106	Active
HARRISONVILLE PWS	HARRISONVILLE	10,019	Active
JEFFERSON COUNTY PWSD 10	IMPERIAL	10,000	Active
CALLAWAY COUNTY PWSD 1	HOLTS SUMMIT	9,840	Active
MONETT PWS	MONETT	9,789	Active
JACKSON COUNTY PWSD 13	LAKE LOTAWANA	9,700	Active
VERNON COUNTY CONS PWSD 1	NEVADA	9,615	Active
PLATTE CO PWSD 4	PLATTE CITY	9,552	Active
BARTON DADE CEDAR JASP COUNTYCONS PWSD 1	LAMAR	9,523	Active
RAY COUNTY CONS PWSD 2	RICHMOND	9,360	Active
GREENE COUNTY PWSD 1	BATTLEFIELD	9,168	Active
JACKSON COUNTY PWSD 15	LEES SUMMIT	8,772	Active
MO AMERICAN TRI STATE	JOPLIN	8,680	Active
PARK HILLS PWS	PARK HILLS	8,587	Active
PERRYVILLE PWS	PERRYVILLE	8,555	Active
LACLEDE COUNTY PWSD 1	LEBANON	8,550	Active
CAPE PERRY COUNTY PWSD 1 SOUTH	JACKSON	8,545	Active
LIBERTY UTILITIES AURORA VERONA	AURORA	8,529	Active
WILLARD PWS	WILLARD	8,400	Active
OAK GROVE PWS	OAK GROVE	8,289	Active
PLEASANT HILL PWS	PLEASANT HILL	8,262	Active
FRANKLIN COUNTY PWSD 3	VILLA RIDGE	8,250	Active
LAFAYETTE COUNTY PWSD 1	ODESSA	8,250	Active
WARRENTON PWS	WARRENTON	8,208	Active
DEXTER PWS	DEXTER	8,200	Active
NEVADA PWS	NEVADA	8,198	Active
CARL JUNCTION PWS	CARL JUNCTION	8,142	Active
PULASKI COUNTY PWSD 2	WAYNESVILLE	8,038	Active
JEFFERSON COUNTY PWSD 5	DE SOTO	8,000	Active
BOONVILLE PWS	BOONVILLE	7,964	Active
CAMDEN COUNTY PWSD 4 HORSESHOE BEND	LAKE OZARK	7,912	Active
DEXTER-EAST PLANT	DEXTER	7,800	Inactive
DEXTER-WEST PLANT	DEXTER	7,800	Inactive
RALLS COUNTY PWSD 1	HANNIBAL	7,662	Active
DEKALB COUNTY PWSD 1	CLARKSDALE	7,635	Active
PIKE COUNTY PWSD 1	BOWLING GREEN	7,590	Active
COLE COUNTY PWSD 4	JEFFERSON CITY	7,568	Active
ADAIR COUNTY PWSD 1	KIRKSVILLE	7,500	Active
JEFFERSON COUNTY PWSD 6	HOUSE SPRINGS	7,500	Active
MARSHFIELD PWS	MARSHFIELD	7,425	Active
LAF JO SALINE COUNTY CONS PWSD 2	HIGGINSVILLE	7,180	Active
CLARK COUNTY CONS PWSD 1	WILLIAMSTOWN	7,140	Active
SULLIVAN PWS	SULLIVAN	7,081	Active
PLATTE COUNTY CONS PWSD 1	KANSAS CITY	7,074	Active
MONROE COUNTY PWSD 2	LADDONIA	6,700	Active
CANNON PWSD 1	PERRY	6,482	Active
BOONE COUNTY PWSD 4	HALLSVILLE	6,455	Active
NODAWAY COUNTY PWSD 1	MARYVILLE	6,428	Active
DESOTO PWS	DESOTO	6,400	Active
TANEY COUNTY PWSD 2	POWERSITE	6,250	Active
PECULIAR PWS	PECULIAR	6,226	Active
JEFFERSON COUNTY PWSD 7	HILLSBORO	6,100	Active
LACLEDE COUNTY PWSD 3	LEBANON	6,075	Active
CASS COUNTY PWSD 9	HARRISONVILLE	6,063	Active
ANDREW COUNTY PWSD 1	SAVANNAH	6,042	Active
PEMISCOT COUNTY CON PWSD 1	HAYTI	6,042	Active
PACIFIC PWS	PACIFIC	6,000	Active
TANEY COUNTY PWSD 3	BRANSON	6,000	Active
CHARLESTON PWS	CHARLESTON	5,900	Active
RICHMOND PWS	RICHMOND	5,797	Active
JACKSON COUNTY PWSD 12	GREENWOOD	5,705	Active
ROGERSVILLE PWS	ROGERSVILLE	5,602	Active
PEVELY PWS	PEVELY	5,600	Active
TRENTON MUNICIPAL UTILITIES PWS	TRENTON	5,600	Active
CARUTHERSVILLE PWS	CARUTHERSVILLE	5,518	Active
JASPER COUNTY PWSD 1	CARL JUNCTION	5,500	Active
MACON PWS	MACON	5,489	Active
WAYNESVILLE PWS	WAYNESVILLE	5,460	Active
SAVANNAH PWS	SAVANNAH	5,249	Active
ODESSA PWS	ODESSA	5,202	Active
CHARITON LINN COUNTY PWSD 3	BROOKFIELD	5,200	Active
ST ROBERT PWS	ST ROBERT	5,192	Active
DESLOGE PWS	DESLOGE	5,034	Active
HERCULANEUM PWS	HERCULANEUM	5,000	Active
ASHLAND PWS	ASHLAND	4,999	Active
STE GENEVIEVE PWS	STE GENEVIEVE	4,999	Active
CLINTON CO PWSD 4 SYS 1	LATHROP	4,968	Active
BOONE COUNTY PWSD 10	CENTRALIA	4,963	Active
CLAY COUNTY PWSD 6	KEARNEY	4,912	Active
MARION COUNTY PWSD 1	PHILADELPHIA	4,900	Active
ELDON PWS	ELDON	4,895	Active
HIGGINSVILLE PWS	HIGGINSVILLE	4,800	Active
MOUNTAIN GROVE PWS	MOUNTAIN GROVE	4,789	Active
SALEM PWS	SALEM	4,736	Active
CRYSTAL CITY PWS	CRYSTAL CITY	4,733	Active
JEFFERSON CO PWSD 8	CEDAR HILL	4,733	Active
LEXINGTON PWS	LEXINGTON	4,729	Active
JOHNSON COUNTY PWSD 3	WARRENSBURG	4,700	Active
ST CLAIR PWS	ST CLAIR	4,700	Active
BUCHANAN CO PWSD #2	FAUCETT	4,692	Inactive
PLATTE CITY PWS	PLATTE CITY	4,691	Active
SCOTT CITY PWS	SCOTT CITY	4,653	Active
CASS COUNTY PWSD 2	BELTON	4,650	Active
MOUNT VERNON PWS	MT VERNON	4,575	Active
LAMAR PWS	LAMAR	4,500	Active
MOSCOW MILLS PWS	MOSCOW MILLS	4,500	Active
NORTH KANSAS CITY PWS	NORTH KANSAS CITY	4,500	Active
OZARK SHORES WATER CO	LAKE OZARK	4,500	Inactive
FREDERICKTOWN PWS	FREDRICKTOWN	4,429	Active
HOLLISTER PWS	HOLLISTER	4,426	Active
CALIFORNIA PWS	CALIFORNIA	4,423	Active
SULLIVAN COUNTY PWSD 1	MILAN	4,412	Active
DUNKLIN COUNTY PWSD 1	CAMPBELL	4,307	Active
LOUISIANA PLANT 2	LOUISIANA	4,261	Inactive
BUTLER PWS	BUTLER	4,219	Active
BOWLING GREEN PWS	BOWLING GREEN	4,195	Active
CASS COUNTY PWSD 7	FREEMAN	4,143	Active
BROOKFIELD PWS	BROOKFIELD	4,111	Active
JACKSON COUNTY PWSD 16	SIBLEY	4,075	Active
CENTRALIA PWS	CENTRALIA	4,027	Active
AUDRAIN COUNTY CONSOLIDATED PWSD 2	MEXICO	4,016	Active
PULASKI COUNTY PWSD 1	LAQUEY	4,000	Active
LOUISIANA - PLANT 1	LOUISIANA	3,967	Inactive
CAMDENTON PWS	CAMDENTON	3,960	Active
KNOX COUNTY PUBLIC WATER & SEWER DIST 1	KNOX CITY	3,947	Active
ST JAMES PWS	ST JAMES	3,935	Active
CARL JUNCTION/BRIARBROOK SUBDIVISION	CARL JUNCTION	3,900	Inactive

Showing the 200 largest of 2,134 systems on record, by population served. Browse by county above for the full list — every system has its own page, and all of them are in the sitemap.