| SCHUYLKILL CO MUN AUTH | 31,850 | 241 | Clean |
| AQUA SHENANDOAH | 9,500 | 113 | Detected |
| TAMAQUA AREA WATER AUTHORITY | 8,000 | 168 | Clean |
| MINERSVILLE MUNICIPAL WATER AU | 7,275 | 395 | Clean |
| BLYTHE TWP MUNICIPAL AUTHORITY | 7,100 | 104 | Clean |
| KLINE TOWNSHIP MUN AUTHORITY | 6,700 | 242 | Detected |
| SCHUYLKILL HAVEN BORO WATER | 6,000 | 110 | Clean |
| MAHANOY TWP AUTH | 5,584 | 129 | Clean |
| PA AM WATER CO-FRACKVILLE DIST | 5,583 | 8 | Detected |
| ASHLAND AREA WATER AUTHORITY | 4,200 | 179 | Detected |
| HEGINS HUBLEY AUTHORITY | 3,870 | 74 | Detected |
| TOWER CITY AUTHORITY | 3,150 | 465 | — |
| ORWIGSBURG MUNICIPAL WATER WKS | 3,000 | 57 | — |
| PINE GROVE BORO WATER SYSTEM | 2,711 | 56 | — |
| SCMA-TREMONT | 2,515 | 216 | — |
| PLUM CREEK MUNICIPAL AUTH | 2,500 | 577 | — |
| FARM SCH CO FAIRGROUND | 999 | 85 | — |
| AQUA PA EAGLE ROCK UTILITIES | 956 | 500 | — |
| AUBURN MUNICIPAL AUTHORITY | 920 | 84 | — |
| BLUE MOUNTAIN HIGH SCHOOL | 900 | 18 | — |
| RINGTOWN BORO WATER DEPARTMENT | 823 | 25 | — |
| SCMA PINEBROOK | 735 | 16 | — |
| HAWK MOUNTAIN SCOUT RESERVATIO | 700 | 29 | — |
| AQUA PA ONEIDA | 568 | 33 | — |
| SCMA ORWIGSBURG INTERCONNECT | 500 | 4 | — |
| DCNR LOCUST LAKE STATE PARK | 500 | 35 | — |
| HAMPTON INN PINE GROVE | 500 | 0 | — |
| MOUNTAIN WATER AUTHORITY | 495 | 147 | — |
| THE PINES AT WEST PENN | 466 | 32 | — |
| WHITE BIRCH GOLF COURSE | 400 | 37 | — |
| BLUE MT CHRISTIAN RETREAT #3 | 400 | 15 | — |
| DEER LAKE CITIZENS ASSOC | 380 | 101 | — |
| BLUE MTN ELEMENTARY WEST | 375 | 51 | — |
| WEST PENN ELEMENTARY | 360 | 233 | — |
| FRIEDEN MANOR MHP | 350 | 165 | — |
| VERSUM MATERIALS US LLC | 350 | 105 | — |
| NUREMBURG WATER CO VEOLIA | 340 | 180 | — |
| MARIAN HIGH SCHOOL | 320 | 43 | — |
| PAPETTIS HYGRADE EGG PRODUCTS | 290 | 247 | — |
| NORTH SCHUY SCH DIST GYM WELL | 270 | 8 | — |
| SCMA PINE GROVE TOWNSHIP | 260 | 387 | — |
| MARY D COMMUNITY ASSOCIATION | 250 | 379 | — |
| ANDREAS SPORTING CLUB | 250 | 38 | — |
| MOUNTAIN VALLEY GOLF COURSE | 250 | 58 | — |
| COMMUNITY FIRE CO LANDINGVILLE | 250 | 12 | — |
| MOREA CITIZENS WATER COMPANY | 225 | 68 | — |
| OMNOVA NORTH AMERICA INC | 220 | 249 | — |
| PORT CLINTON WATER COOP ASSOC | 200 | 515 | — |
| ROSEMOUNT CAMPING | 200 | 116 | — |
| DCNR TUSCARORA STATE PARK | 200 | 45 | — |