Compliance
Commercial building wash-water planning
BMPs, runoff paths, public-way protection, and chemistry that matches substrate.
8 min read · updated 2026-09-22
Wash water is not an afterthought. Drainage path, public-way protection, and collection or diversion expectations should be on the assessment notes before anyone mixes chemistry.
Substrate drives method. Soft wash chemistry that lifts organic soil on brick may be wrong for sensitive coatings. Aggressive pressure that cleans concrete fast can open EIFS and mortar joints.
City and property rules vary. Some sites need berms and vacuum recovery; others need only a planned path to approved drains. Write the BMP into the work plan so the crew is not improvising at 7 a.m.
Document what was used and where runoff went. Facilities and ownership keep those notes longer than marketing photos.
Need a site-specific plan?
Assessment covers elevations, airspace, wash-water path, and an honest mix of drone and traditional methods.
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