| PORTLAND WATER BUREAU | | 666,200 | 0.0198 mg/L |
| TUALATIN VALLEY WATER DISTRICT | | 224,600 | 0.0194 mg/L |
| SALEM PUBLIC WORKS | | 199,820 | 0.0126 mg/L |
| EUGENE WATER & ELECTRIC BOARD | | 176,000 | 0.0124 mg/L |
| MEDFORD WATER COMMISSION | | 106,068 | 0.0020 mg/L |
| HILLSBORO, CITY OF | | 92,632 | 0.0040 mg/L |
| BEAVERTON, CITY OF | | 88,045 | 0.0130 mg/L |
| BEND, CITY OF | | 77,704 | 0.0090 mg/L |
| GRESHAM, CITY OF | | 73,932 | 0.0188 mg/L |
| ROCKWOOD PUD | | 65,443 | 0.0190 mg/L |
| TIGARD, CITY OF | | 62,500 | 0.0190 mg/L |
| SPRINGFIELD UTILITY BOARD | | 62,100 | 0.0142 mg/L |
| CORVALLIS, CITY OF | | 61,468 | 0.0132 mg/L |
| ALBANY, CITY OF | | 57,997 | 0.0172 mg/L |
| SUNRISE WATER AUTHORITY | | 50,003 | 0.0130 mg/L |
| KLAMATH FALLS WATER DEPT | | 40,475 | 0.0021 mg/L |
| LAKE OSWEGO MUNICIPAL WATER | | 40,000 | 0.0175 mg/L |
| KEIZER, CITY OF | | 38,585 | 0.0041 mg/L |
| REDMOND WATER DEPARTMENT | | 37,566 | 0.0019 mg/L |
| GRANTS PASS, CITY OF | | 37,138 | 0.0060 mg/L |
| AVION WC - GREATER AVION | | 35,332 | 0.0024 mg/L |
| MCMINNVILLE WATER & LIGHT | | 34,515 | 0.0064 mg/L |
| COOS BAY NORTH BEND WTR BRD | | 34,500 | 0.0100 mg/L |
| OREGON CITY | | 33,940 | 0.0251 mg/L |
| OAK LODGE WATER SERVICES | | 30,000 | 0.0174 mg/L |
| CLACKAMAS RIVER WATER | | 29,918 | 0.0135 mg/L |
| WOODBURN, CITY OF | | 29,455 | 0.0077 mg/L |
| ROSEBURG, CITY OF | | 28,800 | 0.0081 mg/L |
| TUALATIN, CITY OF | | 28,106 | 0.0190 mg/L |
| WEST LINN, CITY OF | | 28,000 | 0.0250 mg/L |
| FOREST GROVE, CITY OF | | 26,838 | 0.0050 mg/L |
| WILSONVILLE, CITY OF | | 25,915 | 0.0075 mg/L |
| NEWBERG, CITY OF | | 25,138 | 0.0120 mg/L |
| ASHLAND WATER DEPARTMENT | | 20,946 | 0.0070 mg/L |
| MILWAUKIE, CITY OF | | 20,946 | 0.0024 mg/L |
| LINCOLN CITY, CITY OF | | 20,830 | 0.0069 mg/L |
| HERMISTON, CITY OF | | 20,000 | 0.0036 mg/L |
| CLACKAMAS RIVER WATER - CLAIRMONT | | 19,928 | 0.0250 mg/L |
| SHERWOOD, CITY OF | | 19,885 | 0.0146 mg/L |
| CENTRAL POINT, CITY OF | | 19,785 | 0.0090 mg/L |
| LEBANON, CITY OF | | 18,945 | 0.0146 mg/L |
| CANBY UTILITY | | 18,754 | 0.0130 mg/L |
| DALLAS, CITY OF | | 17,911 | 0.0104 mg/L |
| PENDLETON, CITY OF | | 16,996 | 0.0080 mg/L |
| TROUTDALE, CITY OF | | 16,185 | 0.0031 mg/L |
| CORNELIUS, CITY OF | | 14,490 | 0.0106 mg/L |
| ONTARIO, CITY OF | | 14,465 | 0.0060 mg/L |
| SUBURBAN EAST SALEM WD | | 13,900 | 0.0101 mg/L |
| LA GRANDE, CITY OF | | 13,460 | 0.0020 mg/L |
| ST HELENS, CITY OF | | 13,410 | 0.0148 mg/L |
| THE DALLES, CITY OF | | 13,010 | 0.0025 mg/L |
| SANDY, CITY OF | | 12,991 | 0.0130 mg/L |
| GLADSTONE, CITY OF | | 12,121 | 0.0130 mg/L |
| DESCHUTES VALLEY WATER DIST | | 11,700 | 0.0014 mg/L |
| MONMOUTH, CITY OF | | 11,651 | 0.0019 mg/L |
| PRINEVILLE, CITY OF | | 11,000 | 0.0054 mg/L |
| WEST SLOPE WATER DISTRICT | | 11,000 | 0.0208 mg/L |
| COTTAGE GROVE, CITY OF | | 10,879 | 0.0130 mg/L |
| SILVERTON, CITY OF | | 10,484 | 0.0022 mg/L |
| NEWPORT, CITY OF | | 10,439 | 0.0045 mg/L |
| BAKER CITY | | 10,349 | 0.0024 mg/L |
| SWEET HOME, CITY OF | | 10,322 | 0.0130 mg/L |
| INDEPENDENCE WATER SYSTEM | | 10,300 | 0.0055 mg/L |
| MOLALLA, CITY OF | | 10,298 | 0.0070 mg/L |
| ASTORIA, CITY OF | | 10,181 | 0.0210 mg/L |
| FAIRVIEW, CITY OF | | 9,963 | 0.0065 mg/L |
| FLORENCE, CITY OF | | 9,561 | 0.0105 mg/L |
| EAGLE POINT, CITY OF | | 9,554 | 0.0130 mg/L |
| UMPQUA BASIN WATER ASSOC | | 9,499 | 0.0119 mg/L |
| WARRENTON, CITY OF | | 9,100 | 0.0113 mg/L |
| SCAPPOOSE, CITY OF | | 8,710 | 0.0618 mg/L |
| HOOD RIVER, CITY OF | | 8,577 | 0.0060 mg/L |
| CITY OF STAYTON | | 8,400 | 0.0165 mg/L |
| WINSTON-DILLARD WATER DISTRICT | | 8,300 | 0.0066 mg/L |
| UMATILLA, CITY OF | | 8,256 | 0.0016 mg/L |
| SUTHERLIN, CITY OF | | 8,060 | 0.0047 mg/L |
| SEASIDE WATER DEPARTMENT | | 7,482 | 0.0258 mg/L |
| MILTON-FREEWATER, CITY OF | | 7,145 | 0.0026 mg/L |
| BROOKINGS, CITY OF | | 7,120 | 0.0054 mg/L |
| GREEN AREA WATER & SANITARY AUTHORITY | | 7,000 | 0.0022 mg/L |
| JUNCTION CITY WATER UTILITIES | | 7,000 | 0.0100 mg/L |
| SHERIDAN, CITY OF | | 6,494 | 0.0112 mg/L |
| ROATS WATER SYSTEM | | 6,469 | 0.0020 mg/L |
| RAINBOW WATER DISTRICT | | 6,300 | 0.0143 mg/L |
| TALENT, CITY OF | | 6,293 | 0.0117 mg/L |
| SEAL ROCK WATER DISTRICT | | 6,000 | 0.0089 mg/L |
| ICE FOUNTAIN WATER DISTRICT | | 6,000 | 0.0048 mg/L |
| CRYSTAL SPRINGS WATER DISTRICT | | 5,973 | 0.0090 mg/L |
| PHOENIX, CITY OF | | 5,900 | 0.0050 mg/L |
| ESTACADA, CITY OF | | 5,750 | 0.0070 mg/L |
| BOARDMAN, CITY OF | | 5,749 | 0.0060 mg/L |
| KERNVILLE-GLENEDEN-LINC BCH WD | | 5,609 | 0.0080 mg/L |
| CRESWELL, CITY OF | | 5,585 | 0.0106 mg/L |
| TILLAMOOK WATER DEPT, CITY OF | | 5,265 | 0.0160 mg/L |
| VENETA, CITY OF | | 5,200 | 0.0080 mg/L |
| HECETA WATER PEOPLES UTILITY DISTRICT | | 4,921 | 0.0284 mg/L |
| REEDSPORT, CITY OF | | 4,836 | 0.0224 mg/L |
| PHILOMATH PUBLIC WORKS | | 4,670 | 0.0090 mg/L |
| RALEIGH WATER DISTRICT | | 4,500 | 0.0190 mg/L |
| CHENOWITH PUD | | 4,500 | 0.0043 mg/L |