Ethoprop in Connecticut Drinking Water
By Alexander Snyder, Founder & Water Quality Data Lead
The health-based safe level for Ethoprop, set by the U.S. EPA, is 0.00037 mg/L. This health-protective guideline is typically stricter than federal legal limits, which have not always been updated to reflect current science.
Ethoprop has been tracked across Connecticut drinking water. Here is what you need to know about ethoprop in your drinking water and how it may affect your household.
What Is Ethoprop?
Ethoprop is an organophosphate pesticide used in agriculture to control nematodes and soil insects. It enters groundwater through agricultural runoff and direct soil application. The EPA health advisory level is 0.2 parts per billion. Ethoprop inhibits acetylcholinesterase enzyme activity, and acute exposure can cause cholinergic crisis with symptoms including tremors, excessive salivation, and respiratory failure.
Is Ethoprop in Your Water?
Enter your Connecticut ZIP code to find out if ethoprop is in your local water — and see personalized health risks for your household.
Check Your ZIP CodeHealth Effects of Ethoprop
Cholinergic crisis, tremors, respiratory failure
Safety Guidelines
Health Guideline
0.00037 mg/L
Source: U.S. EPA
Ethoprop's health-based safe level is set below the federal legal limit.
| Standard | Level | Source |
|---|---|---|
| Health Guideline | 0.00037 mg/L | U.S. EPA |
Where Does Ethoprop Come From?
Agricultural runoff, contaminated groundwater
How to Reduce Ethoprop in Your Water
- 1Install a point-of-use activated carbon block filter certified to NSF/ANSI Standard 53 for pesticide reduction; activated carbon effectively adsorbs organophosphate compounds.
- 2A reverse osmosis system certified to NSF/ANSI Standard 58 provides additional removal of ethoprop and other dissolved pesticide residues.
- 3For well water near agricultural land, use a granular activated carbon tank system at the point of entry for whole-house treatment.
- 4Test your water through a certified laboratory if located near agricultural operations that use soil fumigants, and replace carbon media according to the manufacturer's schedule.
Who Is Most Vulnerable to Ethoprop?
The safe level of ethoprop 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.
Reading this inside ChatGPT or Claude?
This page can tell you the general science, but not what is actually in your water’s ethoprop level — that depends on your exact address. You can get your specific answer two ways:
- Inside the chat: ask your assistant to “check my tap water with CheckYourTap”. Our connector returns your ZIP code’s measured contaminant levels — including the derived dog and cat safe levels — and, only if you ask it to, can email you the report or arrange a specialist callback.
- On the web: open CheckYourTap.com and enter your ZIP code for a free 30-second report.
Concerned about Ethoprop in your water?
Schedule to get your water tested for ethoprop and more — a Valiant water specialist will review your results and arrange testing for your home.
Frequently Asked Questions
Is Ethoprop in my tap water?▾
What level of Ethoprop is safe?▾
How do I remove Ethoprop from my water?▾
Related Contaminants
Check Water Quality by ZIP Code
Sources
The legal limits and health guidelines for Ethoprop on this page come from the following public authorities:
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.
This report is general information, not medical advice or a substitute for certified laboratory testing. Talk to your pediatrician or physician about specific health concerns.
Reviewed by the CheckYourTap editorial team. Last updated July 2026