Water Quality in Alaska
405 water systems • 157 cities • EPA SDWIS Data
405
Water Systems
73,527
Total Violations
5,020
Health-Based Violations
699,435
Population Served
Overview
Alaska ranks 6th among all U.S. states for total drinking water violations, out of 51 states tracked. The state has 73,527 EPA Safe Drinking Water Act violations on record across 405 water systems serving 157 cities. Of those, 5,020 are health-based violations, meaning a regulated contaminant was measured above the EPA-established safe level. Alaska's total violation count is 107% above the national average. Water systems in Alaska serve approximately 699,435 people. The most frequently cited contaminants in Alaska violations include E. coli, Chlorine Dioxide, Gross Alpha, Fecal Coliform, Stage 2 DBP.
Cities with Most Violations in Alaska
| # | City | Violations | Health-Based | Water Systems | Population |
|---|---|---|---|---|---|
| 1 | Anchorage | 6,388 | 382 | 87 | 249,201 |
| 2 | Grayling | 2,197 | 113 | 1 | 207 |
| 3 | Kwethluk | 1,570 | 165 | 1 | 760 |
| 4 | Chugiak | 1,544 | 7 | 7 | 526 |
| 5 | Alakanuk | 1,510 | 14 | 1 | 570 |
| 6 | Bethel | 1,340 | 66 | 8 | 6,246 |
| 7 | Kwigillingok | 1,184 | 6 | 1 | 400 |
| 8 | Manokotak | 1,177 | 31 | 2 | 508 |
| 9 | Newtok | 1,141 | 0 | 1 | 170 |
| 10 | Kongiganak | 981 | 52 | 1 | 547 |
Largest Cities in Alaska
All Cities in Alaska
| City | Population | Violations | Health Violations | Contaminants |
|---|---|---|---|---|
| Anchorage | 249,201 | 6,388 | 382 | Barium, Bromate, Chlorine +9 more |
| Fairbanks | 160,103 | 347 | 48 | Chlorine Dioxide, Disinfection Byproducts, Stage 2 DBP +2 more |
| Juneau | 38,776 | 92 | 2 | E. coli |
| Jber | 30,003 | 22 | 0 | |
| Wasilla | 23,748 | 912 | 138 | Barium, Chlorine, Chlorine Dioxide +3 more |
| Kodiak | 12,639 | 60 | 9 | Chlorine Dioxide, Fecal Coliform |
| Palmer | 12,464 | 315 | 16 | Chlorine Dioxide, Stage 2 DBP |
| Skagway | 10,947 | 97 | 10 | Chlorine Dioxide, Gross Alpha |
| Ketchikan | 10,422 | 367 | 106 | Disinfection Byproducts, E. coli, Fecal Coliform +3 more |
| Eielson Afb | 9,760 | 26 | 1 | Stage 2 DBP |
| Sitka | 9,448 | 23 | 5 | Fecal Coliform |
| Unalaska | 9,400 | 37 | 0 | |
| Homer | 7,358 | 372 | 22 | E. coli, Gross Alpha |
| Bethel | 6,246 | 1,340 | 66 | Chlorine Dioxide, E. coli, Fecal Coliform +3 more |
| Kenai | 6,040 | 830 | 10 | Chlorine Dioxide, Stage 2 DBP |
| Valdez | 5,639 | 43 | 0 | |
| Barrow | 5,538 | 36 | 1 | Fecal Coliform |
| Soldotna | 5,313 | 942 | 102 | Barium, Chlorine Dioxide, Disinfection Byproducts +1 more |
| Nome | 4,220 | 52 | 2 | Chlorine Dioxide |
| North Pole | 4,077 | 40 | 2 | Chlorine Dioxide, Stage 2 DBP |
| Seward | 3,869 | 184 | 2 | Stage 2 DBP |
| Kotzebue | 3,234 | 138 | 132 | E. coli, Fecal Coliform, TTHM +1 more |
| Petersburg | 3,218 | 10 | 0 | |
| Big Lake | 3,051 | 495 | 25 | Barium, Chlorine Dioxide |
| Dillingham | 2,786 | 613 | 9 | Chlorine Dioxide |
| Cordova | 2,700 | 30 | 3 | Fecal Coliform, Total Haloacetic Acids (HAA5) |
| Haines | 2,489 | 178 | 19 | E. coli, Fecal Coliform, Gross Alpha +1 more |
| Wrangell | 2,300 | 37 | 16 | Fecal Coliform, Stage 2 DBP, TTHM +1 more |
| Craig | 1,475 | 57 | 12 | E. coli, Fecal Coliform, TTHM +1 more |
| Hooper Bay | 1,200 | 241 | 8 | Chlorine Dioxide, Stage 2 DBP |
| Anchor Point | 1,000 | 113 | 3 | Chlorine Dioxide |
| Hoonah | 980 | 42 | 12 | E. coli, Fecal Coliform, Total Haloacetic Acids (HAA5) |
| Chevak | 938 | 80 | 3 | Chlorine Dioxide, Stage 2 DBP |
| Togiak | 910 | 8 | 0 | |
| Klawock | 904 | 282 | 64 | Fecal Coliform, TTHM, Total Haloacetic Acids (HAA5) |
| Mountain Village | 850 | 869 | 21 | Chlorine Dioxide, Gross Alpha |
| Selawik | 846 | 383 | 61 | E. coli, Fecal Coliform, Stage 2 DBP +1 more |
| Sandpoint | 830 | 126 | 13 | Chlorine Dioxide, E. coli, Fecal Coliform |
| Emmonak | 820 | 587 | 42 | Contaminant 2920, E. coli, Stage 2 DBP +1 more |
| Savoonga | 802 | 129 | 2 | TTHM |
| Galena | 780 | 168 | 80 | Chlorine Dioxide, Disinfection Byproducts, Gross Alpha +2 more |
| Kwethluk | 760 | 1,570 | 165 | Contaminant 2920, E. coli, Fecal Coliform +2 more |
| Unalakleet | 757 | 646 | 174 | Disinfection Byproducts, E. coli, Fecal Coliform |
| Yakutat | 740 | 127 | 11 | Chlorine Dioxide, E. coli, Gross Alpha |
| Noorvik | 735 | 159 | 9 | Disinfection Byproducts, Fecal Coliform, Stage 2 DBP +1 more |
| Quinhagak | 724 | 307 | 35 | Fecal Coliform |
| Glennallen | 700 | 148 | 9 | Chlorine Dioxide, Disinfection Byproducts |
| Gambell | 669 | 298 | 19 | Disinfection Byproducts, E. coli |
| Fort Yukon | 665 | 54 | 0 | |
| Whittier | 650 | 66 | 0 | |
| Kipnuk | 639 | 338 | 1 | Disinfection Byproducts |
| Scammon Bay | 637 | 626 | 34 | E. coli, Fecal Coliform |
| Akiachak | 627 | 152 | 1 | Chlorine Dioxide |
| Buckland | 600 | 344 | 128 | Disinfection Byproducts, E. coli, Fecal Coliform +2 more |
| Stebbins | 590 | 99 | 0 | |
| Pilot Station | 580 | 183 | 5 | Chlorine Dioxide |
| Shishmaref | 572 | 206 | 34 | Fecal Coliform, TTHM |
| Alakanuk | 570 | 1,510 | 14 | E. coli, Fecal Coliform, Stage 2 DBP +1 more |
| New Stuyahok | 566 | 190 | 18 | Chlorine Dioxide |
| Saint Marys | 548 | 253 | 16 | E. coli, Fecal Coliform |
| Kongiganak | 547 | 981 | 52 | E. coli, Fecal Coliform |
| Chugiak | 526 | 1,544 | 7 | Chlorine Dioxide, E. coli, Stage 2 DBP |
| Kasigluk | 516 | 302 | 18 | Chlorine Dioxide, Disinfection Byproducts |
| Chefornak | 513 | 304 | 7 | Chlorine Dioxide |
| Manokotak | 508 | 1,177 | 31 | Chlorine Dioxide, Stage 2 DBP |
| Salcha | 508 | 93 | 3 | Chlorine Dioxide |
| Trapper Creek | 500 | 0 | 0 | |
| Nunapitchuk | 496 | 89 | 13 | Chlorine Dioxide, TTHM, Total Haloacetic Acids (HAA5) |
| St. Michael | 495 | 182 | 4 | Fecal Coliform, Stage 2 DBP |
| Nenana | 486 | 18 | 0 | |
| Egegik | 485 | 78 | 4 | Chlorine Dioxide |
| Noatak | 485 | 115 | 0 | |
| Thorne Bay | 470 | 375 | 106 | Fecal Coliform, TTHM, Total Haloacetic Acids (HAA5) |
| Kiana | 455 | 37 | 7 | Chlorine Dioxide |
| Kivalina | 452 | 273 | 104 | E. coli, Fecal Coliform |
| Angoon | 450 | 752 | 42 | Fecal Coliform, Gross Alpha, Stage 2 DBP +2 more |
| Brevig Mission | 442 | 125 | 18 | Chlorine Dioxide |
| Copper Center | 436 | 197 | 0 | |
| Encino | 435 | 9 | 6 | Chlorine Dioxide |
| Clear | 433 | 13 | 0 | |
| Seldovia | 418 | 220 | 5 | E. coli, Fecal Coliform |
| Hydaburg | 415 | 562 | 75 | E. coli, Fecal Coliform, TTHM +1 more |
| Kake | 415 | 327 | 128 | E. coli, Fecal Coliform, TTHM +1 more |
| Kwigillingok | 400 | 1,184 | 6 | Fecal Coliform |
| False Pass | 393 | 26 | 5 | Fecal Coliform, Stage 2 DBP |
| Saint Paul | 380 | 200 | 7 | Chlorine Dioxide, Stage 2 DBP |
| Tuluksak | 373 | 480 | 8 | Chlorine Dioxide |
| Nikolaevsk | 360 | 192 | 5 | Fecal Coliform, Gross Alpha, Stage 2 DBP |
| Tuntutuliak | 350 | 381 | 29 | Barium, Chlorine Dioxide, Disinfection Byproducts +2 more |
| Akiak | 346 | 28 | 0 | |
| Mcgrath | 341 | 153 | 37 | Contaminant 2920, TTHM, Total Haloacetic Acids (HAA5) |
| Napakiak | 336 | 103 | 2 | Chlorine Dioxide |
| Adak | 325 | 181 | 19 | Fecal Coliform, Total Haloacetic Acids (HAA5) |
| Huslia | 323 | 77 | 1 | Chlorine Dioxide |
| Elim | 320 | 93 | 17 | E. coli, Fecal Coliform, Stage 2 DBP |
| Atmautluak | 311 | 373 | 14 | Chlorine Dioxide, E. coli |
| Marshall | 308 | 239 | 3 | Chlorine Dioxide |
| Voznesenka | 300 | 64 | 8 | Chlorine Dioxide, Fecal Coliform, Gross Alpha |
| Denali Park | 300 | 120 | 3 | Chlorine Dioxide |
| Shungnak | 299 | 255 | 10 | Fecal Coliform |
| Teller | 295 | 552 | 31 | E. coli, Fecal Coliform, TTHM |
| Nanwalek | 281 | 597 | 18 | E. coli, Fecal Coliform, Gross Alpha |
| Eek | 280 | 482 | 8 | Fecal Coliform |
| Koyuk | 277 | 187 | 17 | E. coli, Fecal Coliform, Stage 2 DBP |
| Chignik Lagoon | 273 | 168 | 12 | Chlorine Dioxide, E. coli, Fecal Coliform |
| Larsen Bay | 271 | 127 | 1 | Stage 2 DBP |
| Tanana | 271 | 368 | 21 | E. coli, Fecal Coliform |
| Shaktoolik | 270 | 253 | 18 | E. coli, TTHM |
| Ambler | 261 | 65 | 5 | Chlorine Dioxide, Stage 2 DBP |
| Delta Junction | 254 | 53 | 8 | Chlorine Dioxide |
| Old Harbor | 246 | 396 | 48 | Fecal Coliform |
| Nulato | 245 | 21 | 3 | Chlorine Dioxide, Stage 2 DBP |
| Nightmute | 243 | 485 | 16 | Chlorine Dioxide, E. coli |
| Pelican | 230 | 161 | 4 | Fecal Coliform |
| Northway | 223 | 13 | 3 | Chlorine Dioxide |
| Ruby | 215 | 179 | 5 | Chlorine Dioxide |
| Kaltag | 214 | 107 | 14 | Fecal Coliform, Stage 2 DBP |
| Nunam Iqua | 213 | 892 | 75 | Contaminant 2920, TTHM |
| White Mountain | 210 | 23 | 5 | Chlorine Dioxide |
| Grayling | 207 | 2,197 | 113 | E. coli, Fecal Coliform, Stage 2 DBP |
| Tyonek | 206 | 51 | 0 | |
| Nondalton | 205 | 933 | 35 | E. coli, Fecal Coliform |
| Minto | 205 | 666 | 17 | Chlorine Dioxide, Stage 2 DBP |
| Napaskiak | 200 | 208 | 11 | Chlorine Dioxide |
| Chignik Lake | 200 | 159 | 9 | Chlorine Dioxide |
| Coffman Cove | 199 | 93 | 28 | Contaminant 2920, TTHM, Total Haloacetic Acids (HAA5) |
| Chignik Bay | 199 | 205 | 25 | Chlorine Dioxide, E. coli, Fecal Coliform |
| Mekoryuk | 198 | 70 | 3 | E. coli |
| Woods Cross | 192 | 218 | 42 | Fecal Coliform, TTHM, Total Haloacetic Acids (HAA5) |
| Eagle | 192 | 40 | 0 | |
| Cold Bay | 182 | 13 | 0 | |
| Venetie | 181 | 285 | 7 | E. coli |
| Port Graham | 180 | 124 | 10 | E. coli, Fecal Coliform |
| Port Lions | 175 | 143 | 31 | Chlorine Dioxide, Fecal Coliform, Stage 2 DBP |
| Arctic Village | 175 | 435 | 8 | E. coli, Fecal Coliform |
| Wales | 173 | 831 | 68 | Chlorine Dioxide, Haloacetic Acids |
| Koliganek | 170 | 75 | 12 | Chlorine Dioxide |
| Newtok | 170 | 1,141 | 0 | |
| Kokhanok | 160 | 611 | 57 | Fecal Coliform |
| Deering | 160 | 331 | 127 | Disinfection Byproducts, E. coli, Fecal Coliform +2 more |
| Livingston | 156 | 202 | 5 | Chlorine Dioxide, Stage 2 DBP |
| Nikiski | 150 | 58 | 1 | Gross Alpha |
| Golovin | 150 | 420 | 27 | Disinfection Byproducts, E. coli, Fecal Coliform +2 more |
| Tok | 150 | 51 | 9 | Chlorine Dioxide |
| Crooked Creek | 147 | 429 | 7 | Chlorine Dioxide |
| Ouzinkike | 144 | 28 | 6 | Fecal Coliform |
| Allakaket | 135 | 443 | 5 | Chlorine Dioxide |
| Clarks Point | 128 | 364 | 8 | Chlorine Dioxide, E. coli, Gross Alpha +1 more |
| Ward Cove | 125 | 113 | 1 | Gross Alpha |
| Chuathbaluk | 123 | 176 | 1 | Chlorine Dioxide |
| Girdwood | 120 | 47 | 3 | Chlorine Dioxide |
| Sutton | 110 | 20 | 4 | Chlorine Dioxide |
| Circle | 110 | 270 | 9 | Chlorine Dioxide |
| Pitka'S Point | 109 | 265 | 2 | E. coli, Stage 2 DBP |
| Tanacross | 108 | 251 | 3 | Chlorine Dioxide |
| Hughes | 107 | 372 | 12 | Fecal Coliform |
| Igiugig | 100 | 119 | 0 |
Water Quality in Other States
Alabama 13,972 violations Arizona 60,414 violations Arkansas 17,031 violations California 39,276 violations Colorado 42,596 violations Connecticut 28,800 violations Delaware 1,242 violations District of Columbia 115 violations Florida 36,335 violations Georgia 32,159 violations Hawaii 182 violations Idaho 26,078 violations Illinois 30,544 violations Indiana 18,261 violations Iowa 9,389 violations Kansas 19,480 violations Kentucky 9,427 violations Louisiana 32,039 violations Maine 6,830 violations Maryland 5,321 violations Massachusetts 10,561 violations Michigan 15,820 violations Minnesota 3,784 violations Mississippi 25,296 violations Missouri 25,377 violations Montana 20,202 violations Nebraska 5,134 violations Nevada 8,167 violations New Hampshire 6,968 violations New Jersey 19,332 violations New Mexico 37,115 violations New York 93,834 violations North Carolina 54,399 violations North Dakota 8,431 violations Ohio 61,604 violations Oklahoma 128,472 violations Oregon 0 violations Pennsylvania 199,265 violations Rhode Island 0 violations South Carolina 13,045 violations South Dakota 19,565 violations Tennessee 20,607 violations Texas 263,180 violations Utah 71,655 violations Vermont 12,362 violations Virginia 15,298 violations Washington 54,459 violations West Virginia 81,622 violations Wisconsin 18,533 violations Wyoming 13,783 violations
Data Sources
Drinking water data from the EPA Safe Drinking Water Information System (SDWIS). Only active community water systems (CWS) serving 100+ people are included.