Chromium (total)
Status: National drinking water standard exists
Chromium is a naturally occurring metal, but industrial uses can elevate its levels in water. One form, hexavalent chromium, causes cancer. Total chromium is not a good indicator of the amount of hexavalent chromium in drinking water.
2015:
50
states detected
6,642
utilities detected
128 million
people served
0
states over legal limit
0
utilities over legal limit
0
people served over legal limit
State and national drinking water standards and health guidelines
EPA Maximum Contaminant
Level (MCL) 100 ppb
The enforceable federal standard that defines the highest level of a contaminant allowed in drinking water.
ppb = parts per billion.
EPA Maximum Contaminant
Level Goal (MCLG)100 ppb
A non-enforceable federal health guideline. For cancer-causing chemicals, these health goals are typically set to zero.
ppb = parts per billion.
States reporting chromium (total) in drinking water
| UTILITIES WITH CONTAMINATION | |||
|---|---|---|---|
| State | Utilities | People Served | |
| California | 422 | 16,585,718 | |
| New York | 260 | 15,508,441 | |
| Texas | 978 | 13,529,963 | |
| Florida | 644 | 9,475,096 | |
| Illinois | 215 | 7,468,332 | |
| Pennsylvania | 393 | 6,268,674 | |
| New Jersey | 223 | 5,843,312 | |
| Arizona | 123 | 4,383,120 | |
| Michigan | 141 | 4,337,311 | |
| Maryland | 41 | 4,316,538 | |
| Washington | 167 | 3,386,811 | |
| Missouri | 413 | 2,359,280 | |
| Massachusetts | 91 | 2,328,416 | |
| Indiana | 105 | 1,832,645 | |
| Tennessee | 75 | 1,800,699 | |
| Kansas | 214 | 1,768,610 | |
| Minnesota | 51 | 1,630,182 | |
| Alabama | 126 | 1,626,734 | |
| North Carolina | 100 | 1,474,078 | |
| Virginia | 66 | 1,380,739 | |
| Utah | 54 | 1,354,915 | |
| Ohio | 95 | 1,314,812 | |
| Kentucky | 87 | 1,301,587 | |
| Georgia | 74 | 1,242,405 | |
| Mississippi | 294 | 1,231,897 | |
| South Carolina | 71 | 1,177,778 | |
| Connecticut | 49 | 1,140,328 | |
| Wisconsin | 120 | 1,133,145 | |
| Colorado | 84 | 1,132,355 | |
| Hawaii | 16 | 1,127,696 | |
| Nevada | 34 | 1,091,647 | |
| Iowa | 93 | 1,068,431 | |
| Louisiana | 50 | 1,026,554 | |
| New Mexico | 40 | 1,014,299 | |
| Oklahoma | 139 | 920,238 | |
| Arkansas | 70 | 657,803 | |
| Oregon | 21 | 413,506 | |
| Delaware | 34 | 341,236 | |
| West Virginia | 23 | 332,286 | |
| Alaska | 11 | 245,922 | |
| Maine | 117 | 235,883 | |
| Rhode Island | 27 | 206,126 | |
| Idaho | 15 | 192,330 | |
| New Hampshire | 79 | 125,150 | |
| North Dakota | 17 | 107,775 | |
| South Dakota | 37 | 101,780 | |
| Wyoming | 16 | 89,203 | |
| Nebraska | 9 | 83,559 | |
| Montana | 9 | 78,759 | |
| Vermont | 8 | 17,986 | |
| District Of Columbia | 1 | 15,690 | |
Utilities with the highest amounts of chromium (total), 2015
| Utility | Location | Tests | Average level | People served |
|---|---|---|---|---|
| Northome | Northome, MN | 1 of 1 | 92.4 ppb | 202 |
| Ghr Landowners Association Water Co-op | Bullhead City, AZ | 2 of 2 | 71.0 ppb | 280 |
| Paradise Trails Pioneer Valley Ws | Lake Havasu City, AZ | 4 of 4 | 67.8 ppb | 84 |
| Davenport Water Division | Davenport, WA | 2 of 2 | 67.7 ppb | 1,720 |
| Water Utility of Greater Tonopah Garden | Phoenix, AZ | 2 of 2 | 58.0 ppb | 17 |
| Bed Rock Mobile Home Park | Ulysses, KS | 6 of 6 | 56.2 ppb | 150 |
| Fordair Water Co-op Inc. | Coulee City, WA | 1 of 1 | 51.4 ppb | 34 |
| Wenden Domestic Water Improvement District | Wenden, AZ | 1 of 1 | 50.0 ppb | 475 |
| Joshua Valley Water Company | Paradise Valley, AZ | 2 of 2 | 43.0 ppb | 2,000 |
| Adaman Mutual Water Company | Litchfield Park, AZ | 2 of 2 | 43.0 ppb | 700 |
| Copper Mountain Ranch Cfd | Casa Grande, AZ | 2 of 2 | 42.8 ppb | 909 |
| White Hills Water Company Units 3 4 6 | Mesa, AZ | 1 of 1 | 42.0 ppb | 61 |
| Carefree Water Company* | Carefree, AZ | 4 of 4 | 41.3 ppb | 3,314 |
| Rancho Colina Mobile Home Park | Morro Bay, CA | 1 of 3 | 40.0 ppb | 250 |
| Norman* | Norman, OK | 131 of 144 | 39.8 ppb | 70,133 |
| Curlew Kai Homeowner Water System | Republic, WA | 1 of 1 | 39.6 ppb | 112 |
| Kingman Municipal Water* | Kingman, AZ | 65 of 70 | 39.1 ppb | 45,000 |
| I40 Industrial Domestic Water Improvement District Water System* | Kingman, AZ | 2 of 2 | 38.5 ppb | 2,200 |
| Mtc - Arizona State Prison - Kingman | Kingman, AZ | 2 of 2 | 38.0 ppb | 3,500 |
| Colonial Estates Mobile Home Park | Sacramento, CA | 1 of 4 | 37.5 ppb | 438 |
| Village of Orangewood | Phoenix, AZ | 1 of 1 | 37.0 ppb | 500 |
| Yucca Water Association | Yucca, AZ | 3 of 3 | 36.7 ppb | 250 |
| Highland Pines Mobile Home Park | Highland City, FL | 1 of 2 | 34.2 ppb | 36 |
| Santa Ynez Rancho Estates Mutual Water Company | Santa Ynez, CA | 4 of 4 | 34.0 ppb | 294 |
| Dunnigan Water Works | Paso Robles, CA | 1 of 1 | 34.0 ppb | 400 |
| Aguila Water Service | Sun City, AZ | 1 of 1 | 34.0 ppb | 964 |
| Mccloskey Road LLC | Hollister, CA | 24 of 24 | 33.7 ppb | 25 |
| Boulder Inn | White Hills, AZ | 2 of 2 | 33.0 ppb | 29 |
| Polk Correctional Institution | Polk City, FL | 1 of 2 | 32.4 ppb | 1,500 |
| Fisherman's Bend Mobile Home Park | Newman, CA | 2 of 2 | 32.0 ppb | 80 |
* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report Chromium (total), but it likely has the contaminant in its water supply.
| Utility | Location | Tests | Average level | People served |
|---|---|---|---|---|
| Norman* | Norman, OK | 131 of 144 | 39.8 ppb | 70,133 |
| Kingman Municipal Water* | Kingman, AZ | 65 of 70 | 39.1 ppb | 45,000 |
| City of Los Banos | Los Banos, CA | 58 of 58 | 28.9 ppb | 37,168 |
| City of Buckeye Sonora - Sundance | Buckeye, AZ | 12 of 12 | 26.2 ppb | 15,783 |
| City of Surprise - Mountain Vista* | Surprise, AZ | 98 of 98 | 25.1 ppb | 40,615 |
| Epcor Water - Paradise Valley/Scottsdale | Youngtown, AZ | 15 of 17 | 24.8 ppb | 11,600 |
| City of Kerman | Kerman, CA | 28 of 28 | 22.6 ppb | 14,068 |
| City of Davis* | Davis, CA | 242 of 284 | 22.6 ppb | 67,298 |
| City of Patterson | Patterson, CA | 40 of 40 | 18.9 ppb | 20,560 |
| Moore | Moore, OK | 42 of 53 | 18.7 ppb | 41,138 |
| City of Woodland | Woodland, CA | 74 of 75 | 17.9 ppb | 56,464 |
| Coachella Water Authority | Coachella, CA | 60 of 60 | 17.3 ppb | 41,904 |
| SBNDO County Service Area 70J | Victorville, CA | 64 of 72 | 16.2 ppb | 10,111 |
| Mustang | Mustang, OK | 11 of 12 | 15.7 ppb | 15,435 |
| City of Newman Water Department | Newman, CA | 16 of 17 | 14.4 ppb | 10,586 |
| UC - Davis | Davis, CA | 23 of 30 | 14.2 ppb | 40,185 |
| Goodyear Water Department* | Goodyear, AZ | 29 of 29 | 14.1 ppb | 34,000 |
| Epcor Water - Agua Fria* | Youngtown, AZ | 65 of 101 | 13.8 ppb | 52,400 |
| City of Phoenix* | Phoenix, AZ | 68 of 91 | 13.0 ppb | 1,500,000 |
| Arizona Water Company - Apache Junction | Phoenix, AZ | 16 of 16 | 11.9 ppb | 57,647 |
| Rosamond CSD | Rosamond, CA | 17 of 17 | 11.0 ppb | 16,618 |
| USMC - 29 Palms | 29 Palms, CA | 19 of 21 | 10.3 ppb | 28,760 |
| Epcor Water - Sun City* | Youngtown, AZ | 51 of 53 | 10.3 ppb | 38,016 |
| City of Hollister* | Hollister, CA | 32 of 36 | 9.77 ppb | 36,108 |
| Pima Utilities | Sun Lakes, AZ | 18 of 18 | 9.74 ppb | 20,000 |
| City of El Mirage* | El Mirage, AZ | 41 of 41 | 9.68 ppb | 36,905 |
| Indio Water Authority | Indio, CA | 43 of 59 | 9.35 ppb | 77,780 |
| California Water Service - Livermore | Livermore, CA | 141 of 173 | 9.07 ppb | 56,700 |
| Rio Linda/Alverta Community Water District | Rio Linda, CA | 39 of 49 | 8.66 ppb | 13,386 |
| Los Angeles County WW District 40 Reg 38 Lake Los Angeles* | Alhambra, CA | 16 of 16 | 8.43 ppb | 13,600 |
* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report Chromium (total), but it likely has the contaminant in its water supply.