The Ultimate 3D Guide by Our Experts

Zirconium conversion coatings have become the leading replacement for iron phosphate in powder coating and liquid paint pretreatment. They bring real advantages, including less sludge, no phosphate in the discharge and lower operating temperatures. What they don't do is eliminate your wastewater obligations. This guide covers the federal and Colorado requirements that apply when zirconium pretreatment wash water goes to the sewer, to surface water or off-site for disposal. Is

If your shop runs a phosphate or zirconium pretreatment stage before powder coating, your wash water is regulated industrial wastewater. That is a present legal obligation, not a future one. Yet many contract powder coaters operate without a discharge permit, or without knowing whether they need one. This guide covers what federal law requires, what your state and local sewer authority may add on top, and the options for managing or eliminating your discharge liability. Is po