Antimony in Drinking Water
Reference information plus historical EPA compliance records associated with antimony.
EPA Limit (MCL)
6 ppb
EPA Goal (MCLG)
6 ppb
Category
Inorganic
Regulatory values are a concise reference, not legal or medical advice. Confirm the current standard and rule-specific details on EPA.gov.
Health Effects
Increase in blood cholesterol, decrease in blood sugar
Common Sources
Discharge from petroleum refineries, fire retardants
Treatment Considerations for Antimony
Commonly cited treatment approaches include: Reverse osmosis. Choose treatment only after a certified water test identifies the substance and concentration; verify NSF/ANSI certification and consult a qualified local professional when needed.
3,903
Historical Violation Records
1,248
Systems With Records
Historical Antimony Records by State
| State | Records | Systems |
|---|---|---|
| Oklahoma | 1,349 | 232 |
| Montana | 801 | 267 |
| Nebraska | 761 | 123 |
| Missouri | 257 | 165 |
| Virginia | 239 | 139 |
| California | 94 | 45 |
| Georgia | 85 | 63 |
| Colorado | 69 | 43 |
| Mississippi | 51 | 32 |
| Illinois | 37 | 17 |
| New Mexico | 36 | 27 |
| Utah | 29 | 29 |
| Connecticut | 28 | 26 |
| Northern Mariana Islands | 24 | 11 |
| Wyoming | 22 | 12 |
| US Virgin Islands | 6 | 5 |
| Wisconsin | 5 | 5 |
| North Dakota | 4 | 3 |
| Arkansas | 2 | 1 |
| Tennessee | 2 | 1 |
Systems With the Most Antimony Violation Records
OKARCHE
CANADIAN CO RWD # 1
ALINE
OKARCHE RWD, INC
KING RANCH COLONY
EDGAR, CITY OF
MOORELAND
HOLLIS
NORTH BLAINE WATER CORP
LOGAN CO RWD #2
Frequently Asked Questions
What is Antimony and why can it appear in drinking-water records?
Antimony can be associated with drinking water through: Discharge from petroleum refineries, fire retardants.
What reference value does this page show?
The summarized EPA Maximum Contaminant Level is 6 ppb. Some substances use action levels or rule-specific thresholds instead, so verify the current EPA standard.
Does a historical violation record mean it is in my tap today?
No. A compliance record may be historical or resolved. Use the latest Consumer Confidence Report or a certified test for current local conditions.