Cyanide in Drinking Water
What you need to know about cyanide in your tap water.
EPA Limit (MCL)
200 ppb
EPA Goal (MCLG)
200 ppb
Category
Inorganic
Health Effects
Nerve damage, thyroid problems
Common Sources
Discharge from steel/metal and plastic factories
How to Remove Cyanide from Water
Recommended filtration methods: Reverse osmosis, ion exchange
3,743
Total Violations
1,331
Systems Affected
Cyanide Violations by State
| State | Violations | Systems |
|---|---|---|
| Pennsylvania | 974 | 312 |
| Texas | 659 | 206 |
| Georgia | 352 | 112 |
| New York | 326 | 143 |
| Mississippi | 173 | 27 |
| Arizona | 152 | 37 |
| Utah | 118 | 39 |
| Alabama | 96 | 34 |
| North Carolina | 89 | 32 |
| Vermont | 86 | 51 |
| Indiana | 77 | 42 |
| New Jersey | 73 | 36 |
| Alaska | 72 | 48 |
| Oregon | 61 | 29 |
| Connecticut | 60 | 30 |
| Montana | 49 | 22 |
| Puerto Rico | 42 | 12 |
| Oklahoma | 41 | 12 |
| Iowa | 27 | 12 |
| Illinois | 27 | 8 |
Water Systems with Most Cyanide Violations
PA AMERICAN AUDUBON
8,200 served50 violations
C
TOWN OF DUCK HILL
924 served30 violations
C
BULLHEAD CITY MOHAVE
36,330 served27 violations
D
SHREWSBURY BOROUGH
4,727 served24 violations
C
WHISPERING PINES MHP
305 served21 violations
C
EPCOR - AGUA FRIA
127,718 served18 violations
D
ROAMINGWOOD SEWER AND WATER
3,775 served16 violations
C
STEWARTSTOWN BORO WATER AUTH
5,206 served16 violations
C
MITCHELL
285 served15 violations
C
GLENDALE WSC
1,458 served15 violations
F