Atrazine in Drinking Water
Reference information plus historical EPA compliance records associated with atrazine.
EPA Limit (MCL)
3 ppb
EPA Goal (MCLG)
3 ppb
Category
Organic
Regulatory values are a concise reference, not legal or medical advice. Confirm the current standard and rule-specific details on EPA.gov.
Health Effects
Cardiovascular system and reproductive problems
Common Sources
Runoff from herbicide used on row crops
Treatment Considerations for Atrazine
Commonly cited treatment approaches include: Granular activated carbon. 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.
8,931
Historical Violation Records
4,033
Systems With Records
Historical Atrazine Records by State
| State | Records | Systems |
|---|---|---|
| Pennsylvania | 1,932 | 770 |
| Alaska | 1,006 | 191 |
| Washington | 919 | 368 |
| Oregon | 574 | 327 |
| Illinois | 434 | 188 |
| Ohio | 366 | 241 |
| Connecticut | 349 | 181 |
| Oklahoma | 327 | 94 |
| West Virginia | 305 | 105 |
| Montana | 298 | 188 |
| Utah | 257 | 127 |
| Arizona | 249 | 55 |
| North Carolina | 232 | 148 |
| Colorado | 227 | 146 |
| Puerto Rico | 211 | 90 |
| Kentucky | 123 | 80 |
| Texas | 121 | 71 |
| New Mexico | 117 | 31 |
| Iowa | 91 | 67 |
| Vermont | 82 | 59 |
Systems With the Most Atrazine Violation Records
COAL MOUNTAIN WATER
MARBLE WATER SYSTEM
PINNACLE WATER ASSOCIATION
WARMINSTER MUNICIPAL AUTHORITY
SUNRISE LAKES SEC 12
PEORIA CITY OF
MESA CITY OF
COXVILLE WATER ASSN #1
PRAGUE
TRAILS WEST SUBDIVISION
Frequently Asked Questions
What is Atrazine and why can it appear in drinking-water records?
Atrazine can be associated with drinking water through: Runoff from herbicide used on row crops.
What reference value does this page show?
The summarized EPA Maximum Contaminant Level is 3 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.