Dimethipin in Connecticut Drinking Water
Dimethipin has been detected in water systems serving 3,384 ZIP codes nationwide. Here is what you need to know about dimethipin in your drinking water and how it may affect your household.
What Is Dimethipin?
Dimethipin is a desiccant herbicide used to accelerate crop drying before harvest, primarily in cotton and potato production. It enters water through agricultural runoff from treated fields. No EPA maximum contaminant level has been established. Chronic exposure is associated with liver effects and potential developmental toxicity based on animal studies. It has moderate persistence in soil and can migrate to groundwater.
Is Dimethipin in Your Water?
Enter your Connecticut ZIP code to find out if dimethipin is in your local water — and see personalized health risks for your household.
Check Your ZIP CodeHealth Effects of Dimethipin
Liver effects, potential developmental effects
Where Does Dimethipin Come From?
Agricultural runoff
How to Reduce Dimethipin in Your Water
- 1Install a point-of-use activated carbon block filter certified to NSF/ANSI Standard 53 for organic contaminant and pesticide reduction.
- 2A reverse osmosis system certified to NSF/ANSI Standard 58 provides effective removal of dimethipin and related herbicide residues from drinking water.
- 3For well water near agricultural land, use a granular activated carbon system at the point of entry for whole-house protection.
- 4Test water through a certified laboratory if located near cotton or potato farming operations, and maintain filtration media on the recommended replacement schedule.
Who Is Most Vulnerable to Dimethipin?
The safe level of dimethipin varies significantly depending on who is drinking the water. CheckYourTap calculates adjusted safe levels for each member of your household:
A contaminant level that is safe for an adult may exceed guidelines for an infant by 4-8x or more. Check your ZIP code to see personalized results.
Frequently Asked Questions
Is Dimethipin in my tap water?▾
What level of Dimethipin is safe?▾
How do I remove Dimethipin from my water?▾
Related Contaminants
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About This Report
This water quality report is compiled from public records filed with the U.S. Environmental Protection Agency, state health departments, and the U.S. Geological Survey. Contaminant levels are evaluated against EPA federal standards and health-based guidelines from leading environmental and public health organizations. CheckYourTap is a service of Valiant Energy Solutions, a Connecticut water quality and energy services company established in 1930.
Last updated March 2026