How many toilets do you need?

The first consideration when designing washrooms is the number of people who will use the facility.

As we frequently get asked this question here at Cubicle Centre, we thought it a good idea to provide you with the latest recommendations in one easy to read format.

Source: British Standard 6465-1:2006 Sanitary Installations.
 

Office washrooms

Minimum scale of provision of sanitary appliances for staff toilets in offices, shops, factories and other non-domestic premises used as place of work.

Female toilets

Number of persons at work Number of WCs Number of washbasins
1 to 5 1 1
6 to 15 2 2
16 to 30 3 3
31 to 45 4 4
46 to 60 5 5
61 to 75 6 6
76 to 90 7 7
91 to 100 8 8

Above 100 persons require: 8, plus 1 WC and washbasin for every unit or fraction of a unit of 25 persons.

Male toilets

Every male toilet should have at least one WC. Considerations should be give to the provision of privacy screens between urinals.

Number of persons at work Number of WCs Number of urinals Number of washbasins
1 to 15 1 1 1
16 to 30 2 1 2
31 to 45 2 2 2
46 to 60 3 2 3
61 to 75 3 3 3
76 to 90 4 3 4
91 to 100 4 4 4

Above 100 persons require: 4, plus 1 WC and washbasin for every unit or fraction of a unit of 50 persons.

We have also created a complete guide to office and workplace washrooms.

Get the free office guide

Shops and shopping centres

Minimum provision of sanitary appliances for customer toilets in shops and shopping centres with a retail area in excess of 1,000 m2.

Sanitary appliance Male customers Female customers
WC 1 per 500 males; plus 1 per every additional 1,000 males or part thereof
Where urinals are not used, WC numbers to be half of those used for females
1 per 100 females up to 500, plus 1 per every additional 200 females or part thereof
Urinal 2 for up to 500 males, plus 1 for every additional 500 males or part thereof N/A
Washbasin 1 per WC, plus 1 per 5 urinals or part thereof 1, plus 1 per 2 WCs or part thereof

Schools toilets

Minimum provision of sanitary appliances for school washrooms.

Nursery (age 3 – 5 years)

Sanitary appliance Number of sanitary appliances
WC 1 per 10 pupils or part thereof, not less than 4
Washbasin 1 per WC
Deep sink, bath or shower 1 per 40 pupils

Primary (age 4 – 11 years)

Sanitary appliance Number of sanitary appliances Remarks
WC and urinal 1 per 10 pupils under 5 years; and 1 per 15 pupils over 5 years, or part thereof Not more than 2/3rds of boys’ appliances to be urinals
Washbasin 1 per WC / urinal  Every WC / urinal to be close to a washbasin
Shower (where provided) See ‘Swimming pools’ below

Secondary (age 11+ years)

Sanitary appliance Number of sanitary appliances Remarks
Boys’ WC and urinal 1 per 20 pupils, or part thereof Not more than 2/3rds of appliances to be urinals
Girls’ WC 1 per 20 pupils
Washbasin 1 per WC / urinal where there are up to 3 appliances; 2 per 3 WC / urinal where there are more than 3 appliances Every WC / urinal to be close to a washbasin
Shower (where physical education provided) See ‘Swimming pools’ below Easily accessible from all places where physical education takes place
  1. Separate staff facilities should be provided in accordance with ‘Office washrooms’ (above), except that facilities for disabled staff may be shared with pupils.
  2. Where pupils are 8 years old or over, changing rooms and sanitary facilities for PE staff should be in addition to and separate from sanitary facilities for pupils.
We have also created a complete guide to school washrooms including layouts and regulations.

Get the free school guide
Free washroom posters promoting good hygiene are also available to download.

Download your washroom posters

Sports and entertainment venues

Minimum provision of sanitary appliances for assembly buildings where most toilet use is during intervals. For example, theatres, cinemas, concert halls, sports stadiums and similar buildings.

Sanitary appliance Male visitors Female visitors
WC 2 for up to 250 males; plus 1 for every additional 250 males or part thereof 2 for up to 20 females; plus 1 for every additional 20 females or part thereof up to 500 females; and 1 per 25 females or part thereof over 500 females
Urinal 2 for up to 50 males; plus 1 for every additional 50 males or part thereof N/A
Washbasins 1 per WC and in addition, 1 per 5 urinals or part thereof 1, plus 1 per 2 WCs or part thereof

Minimum provision of sanitary appliances for assembly buildings where toilet use is NOT concentrated during intervals. For example, exhibition centres, libraries, museums and similar buildings.

Sanitary appliance Male visitors Female visitors
WC 1 per 250 males; plus 1 for every additional 500 males or part thereof
Male WC provision should be half female WC provision where urinals are not used
2 for up to 40 females;
3 for up to 70 females;
4 for up to 100 females;
plus 1 for every additional 50 females or part thereof
Urinal 1 per 50 males up to 100 males; plus 1 for every additional 100 males or part thereof N/A
Washbasin 1 per WC and in addition, 1 per 5 urinals or part thereof 1, plus 1 per 2 WCs or part thereof

We have also created a complete guide to stadium washrooms.

Get the stadium guide

Restaurants and food courts

Minimum provision of sanitary appliances for restaurants and other places where seating is provided for eating and drinking.

Sanitary appliance Male customers Female customers
WC 2 for up to 150 males; plus 1 for every additional 250 males or part thereof
2 for up to 50 males if urinals are not provided
2 for up to 30 females; plus 1 for every additional 30 females up to 120, plus 1 for every additional 60 females or part thereof
Urinal 1 per 60 males or part thereof up to 120 males; plus 1 for every additional 100 males or part thereof N/A
Washbasin 1 per WC, plus 1 per 5 urinals or part thereof 1 per WC

Pubs, bars and nightclubs

Minimum provision of sanitary appliances for licensed pubs, bars, nightclubs, and discotheques.

Sanitary appliance Male customers Female customers
WC 2 for up to 150 males; plus 1 for every additional 200 males or part thereof2 for up to 40 males if urinals are not provided 2 for up to 25 females; plus 1 for every additional 25 females or part thereof up to 200 females; plus 1 for every additional 35 females or part thereof
Urinal 1 for every 50 males up to 200 males; plus 1 for every additional 70 males or part thereof N/A
Washbasin 1 per WC, plus 1 per 5 urinals or part thereof 1, plus 1 per 2 WCs or part thereof

Swimming pools

Minimum provision of sanitary appliances for swimming pools.

Sanitary appliance Male pool users Female pool users
WC 2 for up to 100 males; plus 1 for every additional 100 males or part thereof 1 per 5 females up to 50 females; plus 1 for every additional 10 females or part thereof up to 100 females; plus 1 per 50 females or part thereof thereafter
Urinal 1 per 20 males up to 100; and 1 per 80 males or part thereof N/A
Washbasin 1 per WC, plus 1 per 5 urinals or part thereof 1, plus 1 per 2 WCs or part thereof
Shower 1 per 10 males or part thereof 1 per 10 females or part thereof

We have also created a complete guide to changing rooms for swimming pools and gyms.

Get the free changing room guide
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