Atrazine in Drinking Water: Health Risks, Sources, and How to Remove It
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.
What actually removes pesticides and herbicides
These are organic molecules, and granular activated carbon adsorbs them well — it is EPA's designated best available technology for nearly the whole class. An NSF/ANSI 53 filter is sufficient; reverse osmosis is not required. Worth knowing about timing: pesticide levels in surface-water systems spike for a few weeks after spring application, and an annual average in your utility report can hide a much higher seasonal peak.
Works
- Carbon certified for lead (NSF 53)The cheapest thing that genuinely removes lead, cysts and many VOCs.
- Reverse osmosis (NSF 58)The broadest removal available at home: arsenic, nitrate, fluoride, PFAS, TDS.
Will not fix this
- Ion-exchange water softener
- UV disinfection (NSF 55)
- Ion-exchange pitcher
Options that carry the right certification
Ordered cheapest-adequate first. Prices are indicative bands and move often.
| Product | Certification | Upfront | Per year | |
|---|---|---|---|---|
| Aquasana AQ-5200 Under-SinkUnder-sink | NSF/ANSI 42, 53, 401 and P473 certified.Catch:Carbon, not RO — no meaningful fluoride, nitrate or arsenic reduction. | $110–160 | $80–120 | Check price |
| Brita Elite Pitcher FilterPitcher | NSF/ANSI 42 and 53 certified, including a lead reduction claim.Catch:No fluoride, nitrate or arsenic reduction. Not PFAS-rated. | $25–40 | $50–70 | Check price |
| APEC ROES-50 EssenceUnder-sink | Built with WQA-certified components to NSF/ANSI 58.Catch:Needs an under-sink drain connection and a spare hole for the dedicated faucet. Strips minerals — some people dislike the flat taste. | $180–240 | $50–80 | Check price |
Certification listings change. Before buying, confirm the current listing for the exact model in the NSF certified products database — a manufacturer's marketing page is not a certification. WaterQ earns a commission on purchases made through these links at no extra cost to you; see our affiliate disclosure. This is general information, not medical or engineering advice.
For a full breakdown of certifications, running costs and the models worth considering, see our buying guide for pesticides and herbicides.