WaterQ

Atrazine in Drinking Water: Health Risks, Sources, and How to Remove It

Alex Carter
Water Quality Researcher · Published 2026-06-23

Atrazine is an organic chemical contaminant that can be found in drinking water supplies. It is categorized as an organic compound by the Environmental Protection Agency (EPA). The EPA has established a Maximum Contaminant Level (MCL) of 3 μg/L for Atrazine in public water systems.

Health Effects

Long-term exposure to Atrazine in drinking water above the EPA standard can lead to health concerns. Specifically, this contaminant has been associated with adverse effects on the cardiovascular system and reproductive problems.

How Atrazine Gets Into Tap Water

Atrazine enters drinking water sources primarily through agricultural runoff. When the chemical is used as a crop herbicide, rainfall or irrigation can wash it into nearby rivers, lakes, or groundwater reservoirs.

How to Remove Atrazine From Your Water

Several water treatment technologies are effective at reducing Atrazine levels. Granular activated carbon filtration and reverse osmosis systems are commonly utilized to remove this organic contaminant from water supplies.

Should You Test Your Water?

You can check for the presence of Atrazine by reviewing your local utility's annual Consumer Confidence Report or using the WaterQ search tool. Private well owners in agricultural areas may also want to conduct periodic testing through a certified laboratory. You can also look up your local water system on WaterQ or check the Atrazine data page for reported levels in your area.

Frequently Asked Questions

Is Atrazine dangerous in drinking water?

Atrazine can be hazardous to health if consumed in quantities exceeding the EPA limit. Exposure is associated with reproductive problems and issues affecting the cardiovascular system.

How does Atrazine get into tap water?

Atrazine gets into tap water systems when agricultural herbicide runoff carrying the chemical drains into water sources.

How can I remove Atrazine from my water?

You can reduce or remove Atrazine using water treatment methods such as granular activated carbon or reverse osmosis.

Source: EPA National Primary Drinking Water Regulations and WaterQ National Database. For more contaminants, visit our contaminant library.