| CWS - VISALIA | 148,496 | 4 | Detected |
| TULARE, CITY OF | 72,131 | 18 | Clean |
| PORTERVILLE, CITY OF | 63,164 | 6 | Detected |
| LINDSAY, CITY OF | 12,659 | 178 | Detected |
| EXETER, CITY OF | 11,169 | 38 | — |
| FARMERSVILLE, CITY OF | 10,243 | 28 | Clean |
| OROSI PUBLIC UTILITY DISTRICT | 8,300 | 19 | Clean |
| WOODLAKE, CITY OF | 7,846 | 41 | Clean |
| EARLIMART PUD | 7,679 | 35 | Clean |
| CUTLER PUD | 6,200 | 45 | Clean |
| DINUBA, CITY OF | 6,081 | 36 | Clean |
| IVANHOE PUBLIC UTILITY DIST | 4,580 | 22 | Clean |
| CASILLAS WATER SYSTEM | 3,000 | 2 | — |
| NPS-WOLVERTON | 2,940 | 278 | — |
| NPS-ASH MOUNTAIN | 2,930 | 7 | — |
| NPS-PINEWOOD WATER SYSTEM | 2,900 | 2 | — |
| PIXLEY PUBLIC UTIL DIST | 2,772 | 150 | — |
| STRATHMORE PUBLIC UTIL DIST | 2,669 | 189 | — |
| TERRA BELLA IRRIGATION DISTRICT - TBT | 2,656 | 58 | Clean |
| TIPTON COMMUNITY SERVICES DIST | 2,543 | 27 | Clean |
| POPLAR COMM SERVICE DIST | 2,200 | 24 | — |
| LONDON COMMUNITY SERV DIST | 2,134 | 30 | — |
| WOODVILLE PUBLIC UTILITY DIST | 1,740 | 19 | — |
| RICHGROVE COMMUNITY SERVICES DISTRICT | 1,617 | 154 | — |
| SPRINGVILLE PUD | 1,500 | 25 | — |
| PORTERVILLE DEVELOPMENTAL CENTER | 1,281 | 24 | — |
| DEL ORO RIVER ISLAND SERV TERR #1 | 1,280 | 147 | — |
| BOB WILEY DETENTION FACILITY | 1,130 | 8 | — |
| CALTRANS PHILLIP S. RAINE SFTY RSRA SB | 1,000 | 24 | — |
| ARCO AM PM - PIXLEY | 1,000 | 27 | — |
| SULTANA COMMUNITY SERVICES DISTRICT | 983 | 56 | — |
| CALTRANS PHILLIP S. RAINE SFTY RSRA NB | 980 | 32 | — |
| DEL ORO CALIFORNIA PINES DISTRICT | 944 | 51 | — |
| SUNDALE UNION SCHOOL | 930 | 8 | — |
| NPS-DORST CG | 900 | 6 | — |
| ALPAUGH COMMUNITY SERVICES DISTRICT | 871 | 158 | — |
| LIBERTY ELEMENTARY SCHOOL | 818 | 6 | — |
| JIREH PACKING GROUP - CUTLER | 770 | 12 | — |
| CWS - TULCO WATER COMPANY | 716 | 10 | — |
| LINNELL FARM LABOR CENTER | 694 | 13 | — |
| SEVILLE WATER COMPANY | 691 | 44 | — |
| DEL ORO TRAVER DISTRICT | 657 | 29 | — |
| WOODVILLE FARM LABOR CENTER | 650 | 15 | — |
| PLAINVIEW MUTUAL WATER COMPANY | 617 | 65 | — |
| DUCOR CSD | 616 | 33 | — |
| OAK VALLEY SCHOOL | 570 | 102 | — |
| NORTH KAWEAH MUTUAL WATER COMPANY | 560 | 98 | — |
| PATTERSON TRACT CSD | 550 | 40 | Clean |
| ALLENSWORTH CSD | 531 | 95 | — |
| BARTLETT PARK | 506 | 51 | — |