Sunlight photolytic dehalogenation kinetics of disinfection byproducts were determined.
Photolytic dehalogenation of DBPs increased with increasing number and size of halogens.
Iodoform, triiodoacetic acid, and diiodoacetic acid degraded rapidly under sunlight irradiation.
Typical levels of nitrate, nitrite, and pH had little impact on photolytic dehalogenation of DBPs.
Natural organic matter inhibited photolytic dehalogenation of DBPs.