| CWSC SALINAS | 123,679 | 24 | Detected |
| CAL AM WATER COMPANY - MONTEREY | 92,450 | 17 | Detected |
| ALCO WATER SERVICE | 56,253 | 15 | Detected |
| MARINA COAST WATER DISTRICT | 38,377 | 8 | Detected |
| SOLEDAD, CITY OF | 19,455 | 22 | Detected |
| GREENFIELD, CITY OF | 18,967 | 13 | Detected |
| CWSC KING CITY | 16,334 | 4 | Detected |
| GONZALES, CITY OF | 8,327 | 24 | Detected |
| CASTROVILLE COMMUNITY SERVICES DISTRICT | 7,515 | 13 | Detected |
| PSMCSD - PAJARO | 6,500 | 5 | Clean |
| SOLEDAD MISSION WS | 6,000 | 70 | — |
| CWSC SALINAS HILLS | 5,293 | 6 | Detected |
| CORRECTIONAL TRAINING FACILITY - SOLEDAD | 4,269 | 32 | Detected |
| CWSC OAK HILLS | 3,161 | 9 | Detected |
| SALINAS VALLEY STATE PRISON | 2,930 | 8 | Clean |
| SEASIDE MUNICIPAL WATER SYSTEM | 2,800 | 15 | — |
| FORT HUNTER LIGGETT | 2,753 | 11 | — |
| CALTRANS CAMP ROBERTS RSRA SB | 2,560 | 31 | — |
| LITTLE BEAR WATER COMPANY | 2,327 | 18 | — |
| CWSC LAS LOMAS | 2,084 | 5 | Clean |
| PRUNETREE SHOPPING CENTER WS | 2,000 | 28 | — |
| TASCO SPRECKELS WATER COMPANY | 1,772 | 14 | — |
| CALTRANS CAMP ROBERTS RSRA NB | 1,750 | 38 | — |
| PRUNEDALE SHOPPING CENTER WS | 1,650 | 34 | — |
| LAGUNA SECA RECREATION WS | 1,248 | 198 | — |
| CAL AM WATER COMPANY - CHUALAR | 1,139 | 4 | — |
| CAL AM WATER COMPANY - HIDDEN HILLS | 1,106 | 0 | — |
| CAL AM WATER COMPANY - TORO | 1,065 | 31 | — |
| CSP-ANDREW MOLERA STATE RESERVE | 1,005 | 8 | — |
| SAN ANTONIO LAKE PARK NORTH WS | 1,002 | 27 | — |
| CAL AM WATER COMPANY - AMBLER PARK | 980 | 5 | — |
| SANTA LUCIA PRESERVE WS | 966 | 33 | — |
| PSMCSD - NORMCO | 928 | 25 | — |
| BUD ANTLE, LLC-SOLEDAD FACILITY WS | 900 | 32 | — |
| PSMCSD - SUNNY MESA | 880 | 19 | — |
| CSP-J.P. BURNS PARK | 802 | 4 | — |
| CORRAL DE TIERRA COUNTRY CLUB WS | 705 | 41 | — |
| ELKHORN SCHOOL WS | 694 | 16 | — |
| EL CAMINO REAL WS #16 | 679 | 18 | — |
| PRUNEDALE SCHOOL WS | 655 | 31 | — |
| SAN ANTONIO LAKE PARK SOUTH WS | 653 | 50 | — |
| CDFW ELKHORN SLOUGH ECOLOGICAL RESERVE | 650 | 20 | — |
| NEPENTHE WS | 618 | 38 | — |
| CSP-PFEIFFER BIG SUR | 585 | 14 | — |
| CARMEL RIVIERA MWC | 584 | 58 | — |
| ECHO VALLEY SCHOOL WS | 579 | 81 | — |
| SAN ARDO WD | 575 | 27 | — |
| MONTEREY MUSHROOMS - MAHER CRT | 554 | 61 | — |
| GABILAN WC | 535 | 52 | — |
| PSMCSD - MOSS LANDING HARBOR WS | 520 | 8 | — |