(a) Avoiding entry of undesirable elements-hair, sand, grit, vegetables, peelings, rags etc.

(b) Flushing twice a day.

(c) Inspection.

(d) Using good quality of materials.

ADVERTISEMENTS:

(e) Use of disinfectants.

(f) Good workmanship.

Local regulations acceptance will be necessary. Segregation of waste water into categories such as (i) foul (from WCs) (ii) Waste (from sinks and baths) and (iii) Storm or surface water. Care should be taken to ensure that waste water leaving the hotel is not unnecessarily contaminated. Periodic checks should be made to ascertain that spilt or unwanted fuel oils, paints, garden chemicals and detergents are not disposed of down the drains.

In the laundry and housekeeping departments is it possible to use biodegradable detergents without any obvious loss of per­formance? The replacement of chlorine bleaches with property-based bleaches reduces the damage to aquatic life and may reduce the load on water treatment plants.