Lower Seletar Waterworks
 Lower Seletar Waterworks (LSWW) has a capacity of million gallons per day. Raw water from the Lower Seletar Reservoir is pumped to the waterworks and chemically treated, followed by a pressurized membrane filtration system and an on-site hypochlorite generation system for disinfection. 
- Preventive Maintenance
 - Equipment Servicing
 - Corrective Maintenance
 
- Raw water pumping
-Chemical coagulation
-Flocculation
-Clarification (Lamella clarifiers)
-Membrane filtration system
-Disinfection using electrochlorination
-Chloramination pH adjustment for corrosion control 
-Fluoridation for dental benefirs
-Facilities for Treatment of sludge and many others
