The US Environmental Protection Agency (EPA) said bromacil
a "possible human carcinogen.
Bromacil and hexazinone were retarded with respect to bromide, and all compounds showed a reduction in peak concentrations as they moved down the soil profile.
Terbuthylazine and bromacil had similar leaching patterns, with bromacil being more mobile and persistent.
Bromacil and terbuthylazine had fairly similar leaching patterns (Table 4, Fig.
9 for atrazine, bromacil, diazinon, and terbuthylazine.
GLEAMS consistently gave better prediction of measured values for bromacil and terbuthylazine at depths of 0.
Residues of bromacil were detected to 1m depth until the last sampling day.
As with bromacil and hexazinone, residues of terbuthylazine also leached to greater depths and this was reasonably predicted by the models on all sampling days.
Bromacil is used heavily for weed control in citrus groves, and on uncultivated land, such as railroad and power line rights of way.
The bromacil report, prepared by the Washington research firm Disposal Safety Inc.
The report noted that bromacil has been found in 568 water-supply wells in Florida alone.
James TK, Rahman A, Lauren DR (2003) Bromacil
residues in soil and groundwater following its use in asparagus crops.