Compliance Guide
WorkSafeBC Portable Toilet Requirements
A complete guide to portable toilet requirements under WorkSafeBC OHS Regulation Part 4 for construction sites, agricultural operations, and events in British Columbia. Updated for the October 2024 flush toilet amendment.
OHS Regulation: Toilet Facility Requirements
WorkSafeBC’s Occupational Health and Safety (OHS) Regulation sets out requirements for sanitation facilities in all BC workplaces. Two sections apply: Section 4.85 (general workplace requirements) and Sections 20.3.1–20.3.2 (construction-specific requirements added October 2024). The minimum toilet counts follow a tiered scale based on Guideline G4.85(1)-1:
1–9 workers: 1 toilet • 10–24: 2 • 25–49: 3 • 50–74: 4 • 75–100: 5
OHS Regulation Section 4.85, Guideline G4.85(1)-1 • 101+ workers: 5 plus 1 per additional 30 workers
Toilets must be within 60 metres (200 feet) of any work area, per Guideline G4.85(1)-2. In multi-storey buildings, toilets must be no more than one floor above or below the work area. A portable toilet at the site entrance does not satisfy the requirement if workers are spread across a large property.
The regulation requires toilet facilities be maintained in working order and cleaned and sanitized as frequently as necessary. Under Section 20.3.2, employers must keep maintenance and cleaning records for a minimum of 30 days. The industry standard is weekly servicing for construction sites. Higher-traffic sites may need more frequent service.
October 2024 Amendment: Flush Toilets Now Required
B.C. Reg. 260/2024, effective October 1, 2024, added Sections 20.3.1 and 20.3.2 to the OHS Regulation under Part 20 (Construction, Excavation and Demolition). The new requirement is clear:
Flush toilets are required on construction sites with 25 or more workers.
OHS Regulation Section 20.3.2 — B.C. Reg. 260/2024, in force October 1, 2024
Chemical or standard portable toilets are only permitted if the employer demonstrates it is not practicable to provide flush toilets. “Practicable” means what is reasonably capable of being done given the specific site circumstances. Flush toilets include units that are plumbed or connected to a holding tank — they do not need to connect to municipal sewer.
Additional requirements under Section 20.3.2:
- Handwashing facilities must be within or immediately adjacent to each toilet enclosure
- Each toilet must be in an enclosed space with privacy, lighting, ventilation, and heating (if practicable)
- Cleaning and maintenance records must be kept for a minimum of 30 days
- On multi-employer sites, the prime contractor determines practicability and bears responsibility
What This Means for Builders and General Contractors
If your site has 25+ workers at any point during the project, flush toilets are the legal default. You can only use standard portable toilets if you can justify why flush units are not practicable — and you may need to defend that position to a WorkSafeBC Prevention Officer. Action Septic stocks flush-type portable toilets with holding tanks and can swap out your existing units or deliver additional flush units as needed.
Worker Count to Toilet Count Table
Use this table to determine the minimum number of portable toilets required on your work site under WorkSafeBC OHS Regulation Section 4.85 and Guideline G4.85(1)-1. These are minimums — busier sites with long shifts or limited break time may benefit from additional units.
| Workers on Site | Minimum Toilets | Toilet Type Required | Est. Monthly Cost |
|---|---|---|---|
| 1–9 | 1 | Standard or Flush | $150 |
| 10–24 | 2 | Standard or Flush | $300 |
| 25–49 | 3 | Flush Required* | $450+ |
| 50–74 | 4 | Flush Required* | $600+ |
| 75–100 | 5 | Flush Required* | $750+ |
| 101–130 | 6 | Flush Required* | $900+ |
| 131–160 | 7 | Flush Required* | $1,050+ |
*Flush-type portable toilets required per B.C. Reg. 260/2024 (October 1, 2024) for sites with 25+ workers unless not practicable. 101+ workers: 5 toilets plus 1 per additional 30 workers. Costs based on standard unit pricing at $150/month. ADA-accessible units at $275/month. Actual costs may vary — call for a quote.
Agricultural Worker Requirements
WorkSafeBC OHS Regulation Part 4 applies to all workplaces in British Columbia. Agricultural operations are not exempt. Farms, orchards, vineyards, and greenhouses must provide toilet facilities for all workers, including seasonal and temporary workers.
The same 1 toilet per 10 workers standard applies. For an orchard with a 30-person cherry-picking crew, that means a minimum of 3 portable toilets accessible to workers in the field. The toilets must be within reasonable walking distance of where workers are actually working, not just at the farmhouse or packing shed.
Okanagan agricultural operations should plan for seasonal portable toilet rentals that align with their harvest calendar. Cherry season runs June through August, apple harvest September through October, and grape harvest September through November. Learn more about agricultural portable toilet rentals.
City of Kelowna Event Requirements
Beyond WorkSafeBC workplace requirements, the City of Kelowna has its own guidelines for portable toilets at public events. These are separate from workplace safety regulations and apply to event organizers, festival promoters, and community groups hosting outdoor gatherings.
1 portable toilet per 100 people for public events.
City of Kelowna Event Planning Guideline
This is a minimum guideline. For private events where guests have no alternative washroom access, the industry standard is 1 per 50 guests for a 4-hour event. Events serving alcohol should plan for approximately 20% more capacity, as alcohol consumption increases washroom usage significantly.
Event organizers should also include at least one ADA-accessible portable toilet for any event expecting 100 or more attendees. This is both a best practice for accessibility and may be required under municipal accessibility standards. Learn more about event portable toilet rentals.
How Action Septic Helps You Stay Compliant
Compliance does not need to be complicated. Action Septic has been helping businesses and organizations across the Okanagan meet their portable toilet requirements for over 29 years. Here is what we handle:
Compliance Assessment
Tell us your crew size, project type, and site details. We will calculate exactly how many units you need and what type (standard, flush, or ADA) to meet WorkSafeBC requirements. No guesswork, no under-ordering.
Delivery and Placement
We deliver to your site and work with your site supervisor on placement that satisfies the accessibility requirement — units within reasonable walking distance of where your workers are actually working.
Weekly Servicing
Every rental includes weekly servicing: pumping, interior cleaning, sanitizing, and restocking toilet paper, hand sanitizer, and deodorizer. This keeps your units in the clean and sanitary condition WorkSafeBC requires.
Compliance Documentation
Access your rental details, service history, and compliance records through our customer portal. If a WorkSafeBC inspector asks for documentation, you can show a complete service record for every unit on your site.
Not Sure How Many Units You Need?
Use our free portable toilet calculator to get a recommendation based on your worker/guest count, event type, and duration.
Frequently Asked Questions
How many portable toilets does WorkSafeBC require on a construction site?
WorkSafeBC requires a tiered minimum: 1 toilet for 1–9 workers, 2 for 10–24 workers, 3 for 25–49, 4 for 50–74, 5 for 75–100, and 1 additional per 30 workers above 100. These minimums come from OHS Regulation Section 4.85 and Guideline G4.85(1)-1. Toilets must be within 60 metres (200 feet) of any work area.
What changed with the October 2024 WorkSafeBC amendment?
B.C. Reg. 260/2024, effective October 1, 2024, added Sections 20.3.1 and 20.3.2 to the OHS Regulation. Flush toilets (plumbed or connected to a holding tank) are now required on construction sites with 25 or more workers. Chemical or standard portable toilets are only permitted if the employer demonstrates flush toilets are not practicable. Employers must also keep cleaning and maintenance records for a minimum of 30 days.
Do agricultural and farm workers need portable toilets under WorkSafeBC?
Yes. WorkSafeBC OHS Regulation Part 4 applies to all workplaces in British Columbia, including farms, orchards, and vineyards. Agricultural and seasonal workers must have access to toilet facilities during working hours. The 1 toilet per 10 workers standard applies.
What happens if my construction site does not have enough portable toilets?
WorkSafeBC Prevention Officers can issue compliance orders, warning letters, or administrative monetary penalties (AMPs). In 2024, WorkSafeBC imposed 361 penalties totalling $7.6 million across all OHS violations, with maximums reaching over $816,000 per violation. A stop-work order may be issued until sanitation requirements are met. The cost of a single penalty far exceeds a full year of portable toilet rentals.
Do I need an ADA-accessible portable toilet on my work site?
If any worker on your site has a mobility impairment, you are required to provide an accessible toilet facility under WorkSafeBC regulations and BC Human Rights Code requirements. Many general contractors and site managers add one ADA unit as standard practice regardless of current crew composition.
How often do portable toilets need to be serviced to meet WorkSafeBC standards?
WorkSafeBC requires that toilet facilities be maintained in working order and cleaned and sanitized as frequently as necessary. Under Section 20.3.2, employers must keep records of maintenance and cleaning for a minimum of 30 days and make them available for inspection. While a specific servicing frequency is not prescribed, weekly servicing is the industry standard. High-traffic sites may require twice-weekly or daily servicing.
Does the City of Kelowna have separate portable toilet requirements for events?
Yes. The City of Kelowna recommends a minimum of 1 portable toilet per 100 people for public events. This is a municipal guideline separate from WorkSafeBC regulations. Event organizers should also include ADA-accessible units. Private events typically follow the industry standard of 1 per 50 guests for a 4-hour event.
Can Action Septic help me determine how many portable toilets I need for compliance?
Yes. Call us at 250-808-7867 with your crew size, project type, and site details. We will tell you exactly how many units you need to meet WorkSafeBC requirements and handle delivery, weekly servicing, and pickup. We have been helping Okanagan businesses stay compliant for over 29 years.
Get Compliant Today
Call us with your crew size and site details. We will have compliant units delivered within days.