Grease interceptor capacity.
Municipal Code of Chicago § 18-29-1003.3.5.1
in effect18-29-1003.3.5.1 Grease interceptor capacity.
Grease interceptors shall have the grease retention capacity indicated in Table 18-29-1003.3.5.1 for the flow-through rates indicated.
Table 18-29-1003.3.5.1
Capacity of Grease Interceptors a
Total Flow-Through Rating (gpm) | Grease Retention Capacity (pounds)
Total Flow-Through Rating (gpm) | Grease Retention Capacity (pounds)
4 | 8
6 | 12
7 | 14
9 | 18
10 | 20
12 | 24
14 | 28
15 | 30
18 | 36
20 | 40
25 | 50
35 | 70
50 | 100
75 | 150
100 | 200
For SI: 1 gpm = 3.785 L/m, 1 pound = 0.454 kg.
a. For total flow-through ratings greater than 100 (gpm), double the flow-through rating to determine the grease retention capacity in pounds.
(Amend Coun. J. 10-14-21, p. 37722, Art. X, § 3)
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2696514Fetched: 10/24/2026