I'm installing a grey water diversion system under my house and I'm wondering whether anyone would consider it unwise to use a 44 gallon drum that previously contained a low styrene emission ortho-unsaturated polyester resin called Estarez 1440 45 LSE. I assume that once the resin has cured it should be non-toxic. The grey water will be used on vegie gardens, hence my concern.
Any advice greatly appreciated. Thanks in advance.