Recommended Units
 

Number
 of Employees

Minimum Number of Restrooms
Serviced Once-a-week

1-10 1
11-20 2
21-30 3

31-40

 4
Over 40 1 additional facility for each 10 employees

Number
 of Employees

Minimum Number of Restrooms
Serviced more than Once-a-week

1-15 1
16-35 2
36-55 3
56-75 4
79-95 5
Over 95 1 additional facility for each 20 employees

 

Number of units required when no pumping service is provided
50/50 mix men/women
1 unit provides approximately 200 uses with 4 hours between uses

Average
Size of Crowd

 1 2 3 4 5 6 7 8 9 10
500 2 4 4 5 6 7 9 9 10 12
1000 4 6 8 8 9 9 11 12 13 13
2000 5 6 9 12 14 16 18 20 23 25
3000 6 9 12 16 20 24 26 30 34 38
4000 8 13 16 22 25 30 35 40 45 50
5000 12 15 20 25 31 38 44 50 56 63
6000 12 23 23 30 38 45 53 60 68 75
7000 12 26 26 35 44 53 61 70 79 88
8000 12 20 30 40 50 60 70 80 90 100
10,000 15 25 38 50 63 75 88 100 113 125
12,500 18 31 47 63 78 94 109 125 141 156
15,000 20 38 56 75 94 113 131 150 169 188
17,5000 22 44 66 88 109 131 153 175 197 219
20,000 25 50 75 100 125 150 175 200 225 250