Ill. Admin. Code tit. 77, § 225.8040
b) Plumbing Fixtures
c) Water Supply Systems
6) Each hot water system serving resident areas shall include at least one of the following equipment requirements to ensure that the water temperature does not exceed 110º F:
d) Water Heaters and Tanks
1) Capacity and Temperature Requirements
A) The water heating equipment shall have sufficient capacity to supply water at the temperature and quantities in the following areas:
| Resident Service | Dietary | Laundry | |
| gallons/hour/bed | 6/1/2 | 4/1/1 | 4/1/2 |
| Temperature (º F) | 110 | 140* | 180 |
*180º F water required at dishwasher and pot and pan sink.
f) Fire Extinguishing Systems