Public Water Systems
143,076 active public water systems, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| Oles Country Store | Stevensville, MT | 820 | 37 | - |
| Harlem City Of | Harlem, MT | 820 | 561 | - |
| Isle | Isle, MN | 820 | 7 | - |
| Pine River JR-SR High | Leroy, MI | 820 | 32 | - |
| Cranberry Lake Mhc | Denver, MI | 820 | 30 | - |
| Key School | Annapolis, MD | 820 | 39 | - |
| Pilot Travel Center #198 | Knoxville, IN | 820 | 40 | - |
| Exeter-Merritt Water Coop | Winchester, IL | 820 | 63 | - |
| Midwest Country Estates | Newton, IA | 820 | 0 | - |
| Baseline WD | Boulder, CO | 820 | 14 | - |
| Rio School Dist/Rio del Valle School | Oxnard, CA | 820 | 15 | - |
| Pinal County Justice Complex | Florence, AZ | 820 | 19 | - |
| Cottonwood Water Association | Harrison, AR | 820 | 63 | - |
| Emmonak Water System | Emmonak, AK | 820 | 1,760 | - |
| Emerson, Village Of | Emerson, 07 | 820 | 0 | - |
| Grand Portage | Grand Portage, 05 | 820 | 1,966 | - |
| Jacobs WSC Plant 3 & 4 | Henderson, TX | 819 | 78 | - |
| Jacobs WSC Plants 1 & 2 | Henderson, TX | 819 | 47 | - |
| Harris County MUD 503 | Houston, TX | 819 | 0 | - |
| Cypress Bend Subdivision | Cypress, TX | 819 | 28 | - |
| Colcord PWA | Colcord, OK | 819 | 168 | - |
| Junction City | Junction City, OH | 819 | 112 | - |
| Van Buren PWS | Van Buren, MO | 819 | 30 | - |
| West Salem | West Salem, IL | 819 | 31 | - |
| Town of White Springs WTP | White Springs, FL | 819 | 61 | - |
| Patagonia Water Department | Patagonia, AZ | 819 | 145 | Clean |
| Choctaw-Edna Water Authority, Inc. | Pennington, AL | 819 | 23 | - |
| Lafayette Township School | Lafayette, NJ | 818 | 28 | - |
| Town of Tishomingo | Tishomingo, MS | 818 | 204 | - |
| Erata Water Association | Laurel, MS | 818 | 274 | - |
| Bradford's Neishyahood Market | Hollywood, MD | 818 | 2 | - |
| Gkpp Inc. | Granger, IN | 818 | 13 | - |
| Liberty Elementary School | Tulare, CA | 818 | 6 | - |
| Kwik Trip | Cedarburg, WI | 817 | 0 | - |
| Mayfield (V) Water Works | Mayfield, NY | 817 | 128 | - |
| Camp Ramah in the Berkshires | Teaneck, NY | 817 | 1 | - |
| Thriftway Super Stop #8 Bozeman | Butte, MT | 817 | 290 | - |
| Marathon Petroleum Company LLC | Garyville, LA | 817 | 73 | - |
| Aquarion-Kent | Shelton, CT | 817 | 22 | - |
| Lacsd - Rimforest | Lake Arrowhead, CA | 817 | 3 | - |
| Adventist Health - St. Helena Hospital | St. Helena, CA | 817 | 7 | - |
| Pepin Waterworks | Pepin, WI | 816 | 70 | - |
| Footville Waterworks | Footville, WI | 816 | 37 | - |
| Penrose Point State Park | Belfair, WA | 816 | 7 | - |
| Riverwood Forest | Austin, TX | 816 | 15 | - |
| Lakewood Water | Austin, TX | 816 | 3 | - |
| Rsu 38 Maranacook Community School | Readfield, ME | 816 | 141 | - |
| Riceville Water Supply | Riceville, IA | 816 | 152 | - |
| Hana Water Systems - South | Hana, HI | 816 | 31 | - |
| Southbury Training School | Southbury, CT | 816 | 370 | - |
Download the SDWIS/UCMR5 state landscape snapshot cited on this page: sdwis-state-landscape.csv (same CSV as /statistics, CC0).