The public is familiar with the risks of microplastics and PFAS in their water supply. Professionals around the world are working to find new methods to remove these contaminants, but a new source has taken over headlines. This week, Water Treatment 411 will discuss pharmaceutical drug contamination in water sources and what utilities need to know.
This type of contamination is usually caused by traces in urine, an unavoidable factor and improper disposal. A 2025 study found widespread pharmaceutical use to lower water quality across the United States. In more arid regions, water conservation efforts such as water reuse and intentional recharge of groundwater supplies could be exacerbating the issue.
Effects
Experts are worried about long-term effects. If contaminants cannot be removed and are persistent, higher traces of pharmaceuticals may collect over time, worsening the impact. Ultimately, medication is designed to interact with living organisms, making this contaminant uniquely poised for an array of risks. And each medication presents a new challenge.
If water is contaminated with antibiotic medication, there’s a risk it could contribute to resistant bacteria. If high traces of anti-inflammatory drugs, such as ibuprofen or aspirin, are present, it could affect living organisms’ organ functions and affect development and reproduction. There is also the risk that several types of pharmaceuticals are present within a single source, introducing a cocktail of negative and potentially dangerous interactions.
The Conversation Today
At the start of 2026, researchers announced traces of drugs and forever chemicals in the Grand Canyon’s water systems. Specifically, they found traces of antibiotic, antifungal, antidepressant, and diabetic drugs. They said the presence of these drugs pointed to a backflow of wastewater from a local water treatment plant contaminating the canyon and Colorado River, a major water source for fauna and humans in the area. While none of the drugs exceeded drinking water standards, most of the compounds lacked regulatory standards. This gap in policy makes it difficult to determine how safe the situation is.
The water facility suspected of contributing to the contamination is the South Rim Wastewater Treatment Plant. Despite being designed to direct water away from the canyon, experts believe it could be reentering the environment through groundwater and a geological fault line.
Away from nature, contaminated water is a topic of debate in courtrooms and Capitol Hill. New Jersey’s Department of Environmental Protection sued several companies, including Pfizer, Johnson & Johnson, and Honeywell. The case mentioned a defunct pharmaceutical plant with remaining toxic waste threatening local water supply. In Washington protestors have promoted legislation designed to limit the potential exposure of traces of abortion medication, mifepristone, within the water supply
What Can Your Utility Do?
Luckily, new innovations are making news every day. Recently, researchers developed a new strategy to remove drugs from water using a byproduct of the timber industry, pine bark. The medium was found to remove 90% of blood pressure and painkiller residue from wastewater.
The responsibility of curbing contamination mainly falls to the manufacturers. Utility companies can offer specialized water systems to treat on-site wastewater and prevent remnant pharmaceuticals from reaching municipal system. For providers of pharmaceutical water purification and wastewater treatment, the most common types of systems are ion exchange, reverse osmosis and distillation. Ion exchange is the most popular and praised for its low maintenance and easy operation. If you’re interested in learning more about pharmaceutical water quality, you can tune into or read over this article on responsible manufacturing.
Treatment plants serving the public act like a watchdog in this process. Traditional technologies to remove pollutants like suspended solids and biodegradable organic compounds might remove some pharmaceuticals. But overall, most utilities don’t have resources designed to intentionally remove the contaminants completely. While upgrading to newer tech could target remaining drugs found in the water supply, this solution is expensive and time-consuming to implement.
The best way to keep your community safe is by conducting regular, reliable testing. This allows you to quickly notice unsafe levels and notify customers of the issue. Here is a list of resources to develop an emergency response plan for your utility.
