Every wash provider will tell you about their spray heads and their temperatures. Almost none will tell you what happens to the water afterwards, and that is the part that separates a permitted operation from one that is going to be in the news.
What rinsate is, legally
The liquid produced by washing a container carries the hazard characteristics of whatever it rinsed. It is not water with a bit of residue in it. If the container held a listed hazardous material, the rinsate is a hazardous waste, and it is regulated as such from the moment it leaves the container.
This holds even when the volumes are small and the concentrations are low. A dilute solution of something regulated is still something regulated, and the sewer is not a treatment process.
What we actually do with it
- Heels are captured separately at the pre-rinse station, before they are diluted into the wash stream. A concentrated heel is far cheaper to dispose of than the same material spread through 400 litres of wash water.
- Wash water goes to settlement, where solids drop out and separable oils are skimmed. This is genuinely useful — it removes a meaningful fraction of the load.
- Water is recirculated within a cycle where the chemistry allows, with make-up added as needed. Less water in, less water out.
- Spent rinsate is characterised, manifested and collected by a permitted treatment facility.
- Nothing goes to a storm drain. Nothing goes to the sanitary sewer without it being explicitly permitted for that stream.
The line that matters in New York
A yard that drains to a storm sewer is discharging directly to surface water. Any leak, spill or careless rinse on that yard is a discharge, and it is treated as one. This is why our wash bays are bunded and why the yard drainage is separate from them — it is not fastidiousness, it is the difference between an operating permit and an enforcement action.
Why this shows up on your invoice
Rinsate disposal is a real and substantial cost, and it varies enormously with what was in the container. Washing out a food syrup is cheap. Washing out something that produces a regulated waste stream costs several times more, and the difference is entirely in the disposal rather than the labour.
This is the main reason we insist on the safety data sheet before quoting a wash. It is not paperwork for its own sake — it determines the chemistry, the bay and the disposal route, which between them are most of the price.
Questions worth asking any wash provider
- What happens to the rinsate, specifically, and who collects it?
- Are the wash bays bunded, and is bay drainage separate from yard drainage?
- Are heels captured before dilution or flushed into the wash stream?
- Can you show a manifest for last month's collections?
A provider who can answer all four without hesitating is running a real operation. One who talks only about pressure and temperature is telling you about the easy half.
Priya Raghunathan is the compliance & documentation at IBC Tote Recycling NY in Astoria, Queens. We publish the figures we work from — if you think one of them is wrong, tell us.
