| CLIFTON PARK WATER AUTHORITY | 35,000 | 183 | Detected |
| SARATOGA SPRINGS CITY | 26,525 | 57 | Detected |
| HALFMOON WATER DISTRICT (TROY) | 15,000 | 44 | Clean |
| BURNT HILLS-BALLSTON LK WD | 10,000 | 64 | Clean |
| WATERFORD WATER WORKS (PURCHASE TROY) | 9,800 | 114 | Detected |
| WILTON WATER & SEWER AUTHORITY | 9,490 | 691 | Clean |
| MALTA WATER DISTRICT #1 | 8,950 | 278 | Clean |
| MOREAU WD #2 (QUEENSBURY) | 6,600 | 35 | Clean |
| BALLSTON SPA VILLAGE | 6,541 | 183 | Clean |
| MECHANICVILLE CITY | 5,200 | 162 | Clean |
| SARATOGA SPRINGS CITY (GEYSER CREST) | 4,000 | 63 | Clean |
| SOUTH GLENS FALLS VILLAGE | 3,900 | 388 | Clean |
| HERITAGE SPRINGS WATER WORKS | 3,200 | 343 | — |
| STILLWATER TOWN (SCWA) | 3,000 | 8 | — |
| CORINTH VILLAGE | 2,283 | 161 | Clean |
| SCHUYLERVILLE-VICTORY JWC | 2,200 | 186 | — |
| KNOLLS ATOMIC POWER LAB (KAPL) | 2,200 | 2 | — |
| SARA SPGS - MAPLE AVENUE | 2,200 | 67 | — |
| CHARLTON WD (GLENVILLE) | 2,000 | 33 | — |
| STILLWATER VILLAGE (SCWA) | 1,600 | 148 | — |
| SARATOGA COUNTY WATER AUTHORITY | 1,525 | 32 | — |
| ROWLANDS HOLLOW SUBDIVISION | 1,502 | 111 | — |
| ALPINE LAKE RV RESORT | 1,500 | 137 | — |
| GALWAY CENTRAL SCHOOL DISTRICT | 1,300 | 265 | — |
| NORTHWOOD WATER COMPANY | 1,300 | 105 | — |
| SARATOGA GLEN HOLLOW | 1,295 | 10 | — |
| ALBANY-SARATOGA SPEEDWAY | 1,000 | 43 | — |
| LEES PARK | 999 | 57 | — |
| HADLEY WD #2 | 997 | 30 | — |
| MALTA GARDENS APTS & MHP | 950 | 219 | — |
| PYRAMID PINES ESTATES MHP | 950 | 89 | — |
| CROSSINGS, THE (HALFMOON WD) | 950 | 11 | Clean |
| MOREAU LAKE STATE PARK | 900 | 113 | — |
| COLDBROOK AT SARATOGA RV RESORT | 810 | 63 | — |
| HADLEY SOUTH WD#1 | 800 | 30 | — |
| TERREL HILLS SUBDIVISION | 800 | 254 | — |
| DUNKIN DONUTS - MALTA | 800 | 22 | — |
| CORINTH TOWN WD (CORINTH V) | 756 | 0 | — |
| ROUND LAKE VILLAGE (CPWA) | 750 | 121 | — |
| SARATOGA VILLAGE MHP | 650 | 235 | — |
| NORTHERN PINES MOBILE HOME PK. | 600 | 37 | — |
| STEWARTS SHOP 202 | 520 | 15 | — |
| MALTA DRIVE IN | 500 | 25 | — |
| SARA SPGS - GREENFIELD CENTRAL | 450 | 94 | — |
| KAYADEROSS ACRES | 450 | 422 | — |
| FOREST HILLS MHP | 429 | 57 | — |
| PARKWOOD VILLAGE APARTMENTS | 400 | 158 | — |
| MCCONCHIES HERITAGE ACRES | 400 | 9 | — |
| STEWARTS SHOP 360 | 400 | 17 | — |
| SARATOGA RV PARK | 350 | 70 | — |