Missouri Tap Water Quality

EPA water quality data for 150 community water systems serving 1,455,963+ people in Missouri. Click any system to see violations, lead testing results, and a safety grade.

Missouri draws drinking water from both the Missouri and Mississippi River systems and from Ozark karst aquifers. Naturally occurring lead and iron are common in groundwater across the mining belt. Atrazine and other agricultural chemicals periodically appear in surface water intakes during spring planting season.

KANSAS CITY PWS KANSAS CITY, MO · 513,800 people · Surface Water INDEPENDENCE PWS INDEPENDENCE, MO · 120,000 people · Groundwater LEES SUMMIT PWS LEES SUMMIT, MO · 99,400 people · Surface Water Purchased MO AMERICAN ST JOSEPH ST JOSEPH, MO · 89,171 people · Groundwater BLUE SPRINGS PWS BLUE SPRINGS, MO · 61,084 people · Surface Water Purchased LIBERTY PWS LIBERTY, MO · 30,800 people · Groundwater GLADSTONE PWS GLADSTONE, MO · 27,000 people · Groundwater JACKSON COUNTY PWSD 1 GRANDVIEW, MO · 24,500 people · Groundwater Purchased BELTON PWS BELTON, MO · 23,598 people · Surface Water Purchased RAYMORE PWS RAYMORE, MO · 21,517 people · Surface Water Purchased MO AMERICAN WARRENSBURG JOPLIN, MO · 18,500 people · Groundwater RAYTOWN WATER COMPANY RAYTOWN, MO · 17,066 people · Surface Water Purchased MO AMERICAN PLATTE COUNTY ST JOSEPH, MO · 16,645 people · Groundwater JACKSON COUNTY PWSD 2 RAYTOWN, MO · 16,440 people · Surface Water Purchased GRAIN VALLEY PWS GRAIN VALLEY, MO · 16,000 people · Groundwater Purchased CAMERON PWS CAMERON, MO · 11,963 people · Surface Water KEARNEY PWS KEARNEY, MO · 11,500 people · Surface Water Purchased HENRY COUNTY WATER COMPANY CLINTON, MO · 11,373 people · Surface Water EXCELSIOR SPRINGS PWS EXCELSIOR SPRINGS, MO · 11,084 people · Groundwater SMITHVILLE PWS SMITHVILLE, MO · 10,885 people · Surface Water MARYVILLE PWS MARYVILLE, MO · 10,775 people · Surface Water HARRISONVILLE PWS HARRISONVILLE, MO · 10,019 people · Surface Water JACKSON COUNTY PWSD 13 LAKE LOTAWANA, MO · 9,002 people · Groundwater Purchased JACKSON COUNTY PWSD 15 LEES SUMMIT, MO · 8,772 people · Groundwater Purchased OAK GROVE PWS OAK GROVE, MO · 8,289 people · Groundwater Purchased PLEASANT HILL PWS PLEASANT HILL, MO · 8,262 people · Surface Water Purchased DEKALB COUNTY PWSD 1 CLARKSDALE, MO · 7,635 people · Groundwater Purchased PECULIAR PWS PECULIAR, MO · 6,226 people · Surface Water Purchased CASS COUNTY PWSD 9 HARRISONVILLE, MO · 6,063 people · Groundwater Purchased ANDREW COUNTY PWSD 1 SAVANNAH, MO · 6,042 people · Groundwater Purchased RICHMOND PWS RICHMOND, MO · 5,797 people · Groundwater JACKSON COUNTY PWSD 12 GREENWOOD, MO · 5,705 people · Surface Water Purchased SAVANNAH PWS SAVANNAH, MO · 5,249 people · Groundwater ODESSA PWS ODESSA, MO · 5,202 people · Groundwater CLINTON CO PWSD 4 SYS 1 LATHROP, MO · 4,968 people · Surface Water Purchased CLAY COUNTY PWSD 6 KEARNEY, MO · 4,912 people · Surface Water Purchased HIGGINSVILLE PWS HIGGINSVILLE, MO · 4,800 people · Surface Water LEXINGTON PWS LEXINGTON, MO · 4,729 people · Groundwater PLATTE CITY PWS PLATTE CITY, MO · 4,691 people · Surface Water Purchased CASS COUNTY PWSD 2 BELTON, MO · 4,650 people · Surface Water Purchased NORTH KANSAS CITY PWS NORTH KANSAS CITY, MO · 4,500 people · Groundwater BUTLER PWS BUTLER, MO · 4,219 people · Surface Water CASS COUNTY PWSD 7 FREEMAN, MO · 4,143 people · Surface Water JACKSON COUNTY PWSD 16 SIBLEY, MO · 4,075 people · Groundwater Purchased HARRISON COUNTY PWSD 2 BETHANY, MO · 3,740 people · Groundwater CLINTON COUNTY PWSD 3 CAMERON, MO · 3,615 people · Surface Water Purchased ANDREW COUNTY PWSD 2 COSBY, MO · 3,580 people · Groundwater Purchased SUGAR CREEK PWS SUGAR CREEK, MO · 3,500 people · Groundwater Purchased CLAY COUNTY PWSD 2 PLEASANT VALLEY, MO · 3,485 people · Surface Water Purchased CLAY COUNTY PWSD 3 HOLT, MO · 3,447 people · Groundwater BETHANY PWS BETHANY, MO · 3,292 people · Surface Water BUCKNER PWS BUCKNER, MO · 3,076 people · Groundwater Purchased CASS COUNTY PWSD 10 PECULIAR, MO · 3,068 people · Surface Water Purchased HENRY COUNTY PWSD 3 CLINTON, MO · 2,993 people · Surface Water Purchased LATHROP PWS LATHROP, MO · 2,945 people · Surface Water Purchased WINDSOR PWS WINDSOR, MO · 2,900 people · Groundwater CASS COUNTY PWSD 5 PLEASANT HILL, MO · 2,875 people · Groundwater Purchased KNOB NOSTER PWS KNOB NOSTER, MO · 2,863 people · Groundwater CASS COUNTY PWSD 3 RAYMORE, MO · 2,760 people · Surface Water Purchased HARRY S TRUMAN PWSD 2 MONTROSE, MO · 2,700 people · Surface Water BATES COUNTY PWSD 5 ADRIAN, MO · 2,690 people · Surface Water Purchased HOLDEN PWS HOLDEN, MO · 2,683 people · Surface Water CASS COUNTY PWSD 6 RAYMORE, MO · 2,575 people · Surface Water Purchased MO AMERICAN LAWSON ST JOSEPH, MO · 2,546 people · Groundwater Purchased CONCORDIA PWS CONCORDIA, MO · 2,500 people · Surface Water CLAY COUNTY PWSD 9 SMITHVILLE, MO · 2,465 people · Surface Water Purchased DAVIESS COUNTY PWSD 2 GALLATIN, MO · 2,448 people · Groundwater Purchased PLATTSBURG PWS PLATTSBURG, MO · 2,354 people · Surface Water BATES COUNTY PWSD 4 RICH HILL, MO · 2,348 people · Surface Water Purchased CLAY COUNTY PWSD 8 EXCELSIOR SPRINGS, MO · 2,243 people · Surface Water Purchased DAVIESS COUNTY PWSD 1 PATTONSBURG, MO · 2,165 people · Groundwater Purchased BUCHANAN COUNTY PWSD 1 DEKALB, MO · 2,115 people · Groundwater Purchased ALBANY PWS ALBANY, MO · 2,100 people · Groundwater WEATHERBY LAKE PWS WEATHERBY LAKE, MO · 2,077 people · Surface Water Purchased BIG LAKE VILLAGE OF PWS CRAIG, MO · 2,000 people · Groundwater Purchased CASS COUNTY PWSD 11 GARDEN CITY, MO · 1,948 people · Groundwater Purchased WESTON PWS WESTON, MO · 1,850 people · Groundwater CASS COUNTY PWSD 4 HARRISONVILLE, MO · 1,840 people · Groundwater Purchased GALLATIN PWS GALLATIN, MO · 1,821 people · Groundwater HAMILTON PWS HAMILTON, MO · 1,813 people · Surface Water ADRIAN PWS ADRIAN, MO · 1,635 people · Surface Water BATES COUNTY PWSD 6 BUTLER, MO · 1,613 people · Surface Water Purchased LAKE WINNEBAGO PWS LAKE WINNEBAGO, MO · 1,600 people · Groundwater Purchased MO AMERICAN GARDEN CITY JOPLIN, MO · 1,590 people · Surface Water GOWER PWS GOWER, MO · 1,525 people · Groundwater Purchased TARKIO BOARD OF PUBLIC WORKS PWS TARKIO, MO · 1,494 people · Groundwater Purchased CALDWELL COUNTY PWSD 3 BRAYMER, MO · 1,452 people · Surface Water Purchased RICH HILL PWS RICH HILL, MO · 1,400 people · Surface Water GENTRY COUNTY PWSD 1 ALBANY, MO · 1,375 people · Groundwater Purchased CASS BATES COUNTY PWSD 12 DREXEL, MO · 1,335 people · Groundwater Purchased ROCK PORT PWS ROCKPORT, MO · 1,318 people · Groundwater Purchased ARCHIE PWS ARCHIE, MO · 1,300 people · Surface Water STANBERRY PWS STANBERRY, MO · 1,220 people · Surface Water Purchased CLAY COUNTY PWSD 5 LIBERTY, MO · 1,191 people · Surface Water Purchased ANDREW COUNTY PWSD 3 FILLMORE, MO · 1,178 people · Groundwater Purchased MOUND CITY PWS MOUND CITY, MO · 1,159 people · Groundwater HENRY COUNTY PWSD 4 URICH, MO · 1,140 people · Surface Water Purchased HOLT COUNTY PWSD 1 OREGON, MO · 1,140 people · Groundwater Purchased KING CITY PWS KING CITY, MO · 1,100 people · Surface Water MAYSVILLE PWS MAYSVILLE, MO · 1,096 people · Surface Water LAKE WAUKOMIS PWS LAKE WAUKOMIS, MO · 1,083 people · Groundwater Purchased CLINTON COUNTY PWSD 1 TRIMBLE, MO · 1,080 people · Surface Water Purchased CLAY COUNTY PWSD 4 LIBERTY, MO · 1,032 people · Groundwater Purchased UNITY VILLAGE UNITY VILLAGE, MO · 1,000 people · Surface Water LAKE TAPAWINGO PWS LAKE TAPAWINGO, MO · 995 people · Groundwater Purchased DREXEL PWS DREXEL, MO · 965 people · Groundwater Purchased GENTRY COUNTY PWSD 2 STANBERRY, MO · 925 people · Surface Water Purchased BRAYMER PWS BRAYMER, MO · 878 people · Groundwater GRANT CITY PWS GRANT CITY, MO · 850 people · Surface Water Purchased OREGON PWS OREGON, MO · 837 people · Groundwater HARRISON COUNTY PWSD 1 EAGLEVILLE, MO · 823 people · Groundwater Purchased WELLINGTON PWS WELLINGTON, MO · 812 people · Groundwater Purchased FERRELVIEW PWS FERRELVIEW, MO · 802 people · Surface Water Purchased WAVERLY PWS WAVERLY, MO · 800 people · Groundwater Purchased MO AMERICAN ORRICK ST JOSEPH, MO · 752 people · Groundwater Purchased BATES COUNTY PWSD 2 AMSTERDAM, MO · 752 people · Surface Water MO AMERICAN STEWARTSVILLE ST JOSEPH, MO · 750 people · Groundwater Purchased MO AMERICAN WOOD HEIGHTS ST JOSEPH, MO · 750 people · Groundwater Purchased CLINTON COUNTY PWSD 4 SYS 2 LATHROP, MO · 750 people · Surface Water Purchased CASS COUNTY PWSD 1 STRASBURG, MO · 723 people · Surface Water Purchased ATCHISON COUNTY PWSD 1 ROCK PORT, MO · 700 people · Groundwater Purchased CALDWELL COUNTY PWSD 2 KIDDER, MO · 695 people · Surface Water Purchased CLEVELAND PWS CLEVELAND, MO · 690 people · Surface Water Purchased DEARBORN PWS DEARBORN, MO · 670 people · Surface Water Purchased FAIRFAX PWS FAIRFAX, MO · 638 people · Groundwater Purchased BURLINGTON JUNCTION PWS BURLINGTON JUNCTION, MO · 630 people · Groundwater EDGERTON PWS EDGERTON, MO · 615 people · Surface Water Purchased LEETON PWS LEETON, MO · 601 people · Groundwater ANDREW COUNTY PWSD 4 ROSENDALE, MO · 600 people · Groundwater Purchased POLO PWS POLO, MO · 575 people · Groundwater Purchased HARDIN PWS HARDIN, MO · 569 people · Groundwater Purchased JAMESPORT PWS JAMESPORT, MO · 567 people · Groundwater Purchased HOPKINS PWS HOPKINS, MO · 550 people · Groundwater URICH PWS URICH, MO · 505 people · Surface Water Purchased BATES COUNTY PWSD 7 ROCKVILLE, MO · 500 people · Surface Water Purchased ALMA PWS ALMA, MO · 494 people · Surface Water Purchased FREEMAN PWS FREEMAN, MO · 482 people · Surface Water Purchased DEEPWATER PWS DEEPWATER, MO · 433 people · Surface Water Purchased BATES COUNTY PWSD 3 BUTLER, MO · 432 people · Surface Water Purchased RAVENWOOD PWS RAVENWOOD, MO · 420 people · Groundwater OSBORN PWS OSBORN, MO · 405 people · Groundwater Purchased CRAIG PWS CRAIG, MO · 400 people · Groundwater EAST LYNNE PWS EAST LYNNE, MO · 400 people · Groundwater Purchased HENRIETTA PWS HENRIETTA, MO · 397 people · Groundwater Purchased TRACY PWS TRACY, MO · 390 people · Surface Water Purchased GILMAN CITY PWS GILMAN CITY, MO · 387 people · Groundwater Purchased UNION STAR PWS UNION STAR, MO · 386 people · Groundwater Purchased MONTROSE PWS MONTROSE, MO · 384 people · Surface Water Purchased CHILHOWEE PWS CHILHOWEE, MO · 382 people · Groundwater Purchased NORTHMOOR PWS NORTHMOOR, MO · 375 people · Surface Water Purchased