There is a category of event decision where being roughly right is fine: bunting colour, playlist order, the font on the posters. Sanitation is not in that category. Get the toilet numbers wrong and every attendee finds out personally, twice, with their phone in hand. Here is how to be actually right.
The four inputs
- Peak on site count. Not tickets sold: the maximum simultaneously present. A rolling street fair peaks far below its total attendance; a concert peaks at showtime.
- Duration. Past a few hours, usage compounds. Multi day events with camping change category entirely.
- Alcohol. Licensed events need substantially more capacity, every industry rule of thumb scales up when the bars open.
- The permit. Councils commonly mandate minimum ratios, including accessible provision. When your maths and the permit disagree, the permit wins, so read it first.
Units by role
- Fresh water portable toilets: the core fleet, self contained, no plumbing required
- Accessible units: in every bank, on accessible routes, not bolted on at the end
- Toilet trailers: the amenity step up for VIP, corporate and talent areas
- Hand wash stations: beside every bank, hot water where there is food
- Ablution blocks: multi day and camping events, where showers enter the requirement
Placement: banks beat scatter
Clustered banks clear queues faster than scattered singles, concentrate the servicing, and are easier to light and supervise. Put banks where people already are, near bars, food, exits, offset so toilet queues do not cross main flows. Light every bank; an unlit toilet block after dark is out of service whether or not it is clean. And leave truck access to every bank, because a bank that cannot be serviced mid event is a countdown.
Servicing: the half organisers forget
Single day events: delivered stocked, collected after, simple. Multi day events need a service window in the quiet hours, restocking of consumables, and, on unsewered ground, waste tanks with a pump out arrangement sized to the crowd. An unserviced unit is a failed unit by day two; the non sewered site guide explains the tank arithmetic.
Water rides the same order
Drinking water, refill points and caterer supply want planning with sanitation, not after it: hydration stations, bubblers, the water hub for bulk, and event water services where mains do not reach. One truck, one window, one contact.
The sequence
- Peak count, duration, licensing: fix the inputs
- Read the permit's mandated ratios
- Set counts and mix, generous if licensed
- Bank placement onto the site plan, with lighting and truck access
- Servicing schedule, plus tanks if unsewered
- Water and hand washing into the same order
Book it early
Sanitation fleet runs out on peak weekends before fencing does. Request a quote with dates and numbers, or get in touch. The wider event method is in the 11 step guide.