Textile wastewater creates toxic byproducts study finds

Toxic halogenated chemicals can form during textile wastewater treatment

A new study reports that common textile wastewater treatment practices can generate unexpectedly high levels of toxic compounds, creating a clear occupational health hazard for workers.

The researchers found that treatment can inadvertently produce halogenated byproducts—specifically chloroform and bromoform—at alarmingly high concentrations. These chemicals are notable because they’re potentially harmful to human health, and their formation suggests that some existing wastewater workflows may convert precursor substances into more dangerous end products rather than simply removing pollutants.

The key implication is practical: even where facilities believe they are improving water safety, the treatment process itself may introduce new risks. That matters most for people exposed during treatment, maintenance, and handling of treated or partially treated effluent, when airborne or liquid exposure could occur.

Because the findings focus on what treatment can produce rather than on final discharge outcomes alone, the study raises questions about what monitoring and controls are in place at textile sites. It also suggests that risk assessments for wastewater plants may need to treat halogenated byproducts as target compounds—measured routinely and mitigated if levels rise.

In response to the hazard, the most direct next step for operators is to re-check how wastewater is processed and whether process conditions can be altered to reduce the formation of chloroform and bromoform.

• Monitor for chloroform and bromoform during treatment
• Review process conditions and potential precursor sources
• Strengthen worker exposure controls where byproducts may form