USPE Maintenance & Compliance Library

Drainage / Wastewater Planning Checklist

The plumbing decisions that make or break an autopsy suite or anatomy lab — organized for your licensed plumber, facilities team, and local wastewater authority.

← Back to Resource Center

Connection Planning

  • Indirect waste / air gap: Autopsy tables and similar fixtures commonly discharge through an indirect connection with an air gap to protect the sanitary system from backflow. Confirm the required arrangement with your plumbing code official.
  • Trap access: Every table drain needs a serviceable trap — specify access before casework closes it in. Quarterly service is on the autopsy table maintenance schedule.
  • Solids interception: Plaster, casting media, and tissue solids don't belong in the sanitary line. Plan a solids interceptor or strainer protocol at each fixture.
  • Backflow protection: Confirm device type and testing schedule for water supply connections to tables and sprayers.

What Can Go Down the Drain — and What Can't

  • Ask your sewer authority first. Many jurisdictions restrict or prohibit sanitary-sewer disposal of formaldehyde-bearing solutions; some allow limited discharge with neutralization or dilution documentation. Get it in writing.
  • Immersion tank fluid changes: Plan collection or neutralization capacity BEFORE the first semester's fluid change — see the immersion table guide.
  • Disinfectant rinse water: Typically acceptable, but confirm if you use high-volume chemistries.
  • Pathological waste: Never a drain matter — follows your regulated medical waste stream.

Coordination List

  • Local wastewater/pretreatment authority: discharge permissions in writing
  • Licensed plumber: indirect waste details, trap access, venting
  • Safety officer: spill response and neutralization supplies staged
  • USPE: fixture drain sizes and rough-in specs from submittals before slab work
Pro tip: The most expensive drainage mistakes are discovered after tile. Get fixture rough-in specs from USPE at PO time and hand them straight to the plumber.
Compliance Notice: Equipment selection should be reviewed with facility safety officers, licensed contractors, ventilation engineers, and applicable authorities having jurisdiction. USPE equipment supports professional workflow and cleanability but does not independently guarantee OSHA, EPA, CAP, Joint Commission, state, local, or institutional compliance.

Related Resources

OSHA / Formaldehyde ChecklistVentilation Checklist1035-8PAT Autopsy Table w/ Sink1036-11 Center Sink Station

Frequently Asked Questions

Can formalin be poured down the drain?

Treat the answer as no until your local sewer authority says otherwise in writing. Rules vary widely; many require collection, neutralization, or licensed disposal for formaldehyde-bearing solutions.

Why do autopsy tables use an indirect drain connection?

The air gap prevents any possibility of sewer backflow reaching the fixture — a sanitary protection commonly required for this fixture class. Your plumbing official confirms the exact arrangement.

What drain problems show up most in the field?

Missing trap access (can't service what you can't reach), solids sent down the line, and slow drains from skipped daily flushing. All three are planning and habit fixes, not equipment failures.

Rough-in specs, before you pour.

USPE supplies drain and supply rough-in details with every table and station order.

Call 1-888-792-9315 or email cool@mymortuarycooler.com