Runoff & Water Containment: the full procedure
Prevent, contain, then capture washwater so nothing reaches a storm drain without authorization.
- Applies to: Field Technician, Crew
- Frequency: Every job; review at onboarding
- Scope: Covers the prevent/contain/capture workflow for washwater. All discharge legality, permitting, and disposal defer to EPA Clean Water Act/NPDES guidance and local stormwater regulations and the business safety plan.
What you need
- Storm-drain covers/mats
- Berms/booms
- Wet vacuum/recovery system
- Containment basin
- Sandbags
- Washwater storage container
The procedure, step by step
- Identify the drain path — Before work, locate every storm drain and the path washwater will take from the work area.
- Prevent excess washwater — Reduce the volume of dirty water generated by using dwell/chemistry and efficient technique rather than over-rinsing.
- Cover storm drains — Cover or block nearby storm drains with mats/covers so washwater cannot enter without authorization. Discharge legality defers to EPA and local rules.
- Contain the work zone — Use berms, booms, or sandbags to keep washwater inside the work zone and direct it toward a capture point.
- Capture and recover — Recover contained washwater with a vacuum/recovery system into storage rather than letting it run off.
- Check the discharge rules — Confirm what is permitted for this jurisdiction before disposing of any washwater. Permitting and disposal defer to EPA and local stormwater authorities.
- Dispose per regulation — Dispose of recovered washwater per the approved method (sanitary sewer/landscaped area/hauler) allowed by local rules and the safety plan.
- Document containment — Note the containment and disposal method used in the job record for compliance.
Quality check before you finish
- All storm drains located before work
- Washwater volume minimized at the source
- Drains covered/blocked during work
- Work zone bermed/contained
- Washwater captured, not allowed to run off
- Disposal method confirmed against local rules
- Containment/disposal documented in job record
This is a free, source-anchored standard operating procedure (SOP) you can print and hand to staff. It documents the work sequence for a Pressure Washing business — not safety or regulatory rulings, which defer to the cited authorities, the applicable code, and your own health-and-safety plan. Open the tool above to print it, toggle ink-saver, or (with a free ToolFluency Business account) edit it to match your own workflow.
Sources
- EPA (epa.gov)
- Cleaner Times (cleanertimes.com)
- PWNA (pwna.org)
About Free Runoff Containment SOP
Free printable SOP for pressure washing runoff and water containment using prevent-contain-capture. Defers to EPA. No signup.
How to use
- Read the full procedure top to bottom before the work — the SOP runs in order and each step builds on the last.
- Toggle Ink-saver (black & white) for a cheaper mono print for the binder; leave it off for the full-color version.
- Click Print SOP to print or save as PDF. Print one per crew, laminate it for the binder, or attach it to the job in your scheduling system.
- Train new hires on it and have staff sign off. Found something out of date? Use the feedback link — flagged SOPs are re-researched against the source list.
Frequently asked questions
Is it legal to let washwater enter a storm drain?
Usually not without authorization. The EPA generally prohibits discharging pressure-washing wastewater to the storm sewer without an NPDES permit. All discharge legality defers to EPA and your local stormwater authority.
What does prevent-contain-capture mean?
It is the three-step order for runoff control: prevent reduces how much dirty water you create, contain keeps it inside the work zone, and capture recovers it so it cannot escape. Disposal of captured water defers to local regulations.
Part of ToolFluency’s library of free online tools for Printables. No account needed, no data leaves your device.