Inspection & Certification of Water Storage Tank by Licensed Plumber
PUB-INSP-WTIC
Inspection & Certification of Water Storage Tank by Licensed Plumber
To : Director, Water Supply (Network) DepartmentDate :
Details of Registered Customer and Location/ Nature of Work
Name of Registered Customer / PUB Account No:Name of company (if any) / Tel No:
Address
Postal Code:
Nature of Work† / Inspection & Water Sampling only Inspection, Cleaning & Disinfection
Name of Laboratory (if any) /
Total number of Tanks / Low Level Tanks : Intermediate Level Tanks: High Level Tanks :
Any unlined galvanised iron (GI) water pipes/fittings in the premises? / No Yes.
Name & Signature of Registered Customer / Date
Particulars of Licensed Plumber
Name / Licence No: WS/ /Address
Postal Code:
Tel No (Home/Office*) / Handphone No / Fax No
Water Tanks Certified
Level/ Storey ‡ / Number of Tanks/Compartments / Size of Compartment (LxWxH) m / Material / Type of Coating/ Lining(State Brand Name)
LowIntermediateHigh / / / / Stainless Steel 304Stainless Steel 316Mild SteelConcreteGRPFRPHDPE
LowIntermediateHigh / / / / Stainless Steel 304Stainless Steel 316Mild SteelConcreteGRPFRPHDPE
LowIntermediateHigh / / / / Stainless Steel 304Stainless Steel 316Mild SteelConcreteGRPFRPHDPE
LowIntermediateHigh / / / / Stainless Steel 304Stainless Steel 316Mild SteelConcreteGRPFRPHDPE
LowIntermediateHigh / / / / Stainless Steel 304Stainless Steel 316Mild SteelConcreteGRPFRPHDPE
Report on Leak Inspection in Water Service Pipes (Under Mains Pressure)
Any leak in service pipe detected† / No Yes. Leak was repaired on:Bulk Meter / Meter No / Initial Reading after Shut-off / Time / Final Reading Before Turn-on / Time
AMPM / AMPM
By-pass Meter / Meter No / Initial Reading after Shut-off / Time / Final Reading Before Turn-on / Time
AMPM / AMPM
Note – This form is to be submitted with the Certificate of Satisfactory Completion of Water Service Work for the cleaning and disinfection of water storage tank. The Licensed Water Service Plumber shall submit these forms to Director, Water Supply (Network) Department within seven days of completion of the work.
I, the undersigned, hereby certify that†:-
All the above water storage tanks are in a condition fit and safe for the storage of potable water in accordance with the Public Utilities (Water Supply) Regulations and the Singapore Standard CP48 - Code of Practice for Water Services. Inspection, cleaning and disinfection of water storage tanks are carried out in accordance with Annex A of CP48.
A joint inspection on ______(date) had been carried out with the building owner or building owner’s representative, prior to certification
Water in the tanks used down to 150 to 200mm from the bottom of the tanks before the tanks are isolated and the outlet pipes shut off for cleaning and disinfection of the tank.
All downfeed and distributing pipes from the tanks had been thoroughly flushed until clean before water from the tanks was put into use and there are no leaks in the pipes and fittings at the above premises.
The attached reports from a SAC-SINGLAS accredited laboratory show that the water samples taken from every tank passed the chemical and bacteriological examinations.
No non-potable pipe running above/inside the water tanks.
______
Signature of Licensed Water Service Plumber/ Date
* Delete where applicable
† Tick where applicable
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RELEASE 1
Checklist for Inspection & Certification of Water Storage Tank
Defects Description
/ Defects DescriptionPhysical Condition of Tank†:
Internal walls rusty
Internal walls dirty
Internal walls covered with moss
External walls rusty
External walls dirty
External walls badly corroded
External walls found with cracked lines
External walls others
Roof cover rusty
Roof cover dirty
Holes/gaps not sealed
Part of roof cover missing
Whole of roof cover not provided
Condition of Water†:
Water dirty with sediment
Water dirty with oil film
Water dirty with colour
Water dirty with smell
Water contaminated
Water samples fail chemical / bacteriological analysis
Security of Tank†:
Room/enclosure housing water tanks not locked
Access to high level tanks not locked
Inspection manhole cover not locked
Inspection manhole not properly covered
Inspection manhole cover not hinged or chained to tank
Cover for inspection manhole not provided
The lock used for the room/enclosure housing water tanks are not the types used with non-duplicable keys
Water tank inspection manhole cover not locked
Locks for water tank inspection manhole covers are not the types used with non-duplicable keys
Water tank inspection manhole not properly covered
Water tank inspection manhole cover not hinged or chained to tank
Cover for water tank inspection manhole not provided
Stainless steel brackets securing the water tank inspection manhole covers are not installed
Contour of the stainless steel brackets are not in accordance with the profile of the water tank inspection manhole covers
Round tapered nuts are not used for the installation of the stainless steel brackets
Round tapered nuts used for the installation of the stainless steel brackets securing the water tank inspection manhole covers are not tightened properly / Condition of Ancillary Fittings/ Equipment & Others†:
No ventilation
Ventilation openings not covered with fine netting
Other openings not covered with netting
Faulty electrical float switch
Faulty ball valve
Faulty ball float
No access ladder for inspection
No safety measures provided for access
Safety measures provided for access is inadequate
Space around tank less than 600 mm width
Diameter of overflow pipe the same as inlet pipe
Diameter of overflow pipe smaller than inlet pipe
Overflow pipe higher than inlet pipe
Overflow pipe not covered with fine netting
Overflow pipe not provided
Drain-off pipe not provided
Warning pipe not provided
Warning pipe higher than overflow pipe
Warning pipe not covered with fine netting
Sanitary pipe, floor trap, sewer pipe, reclaimed water pipe or waste pipe located above water tank
Tank positioned such that water contained therein is contaminated/ likely to be contaminated
Service pipe and distributing pipe are connected
Service pipe and pump are connected
Orifice of outlet is not 75 - 100 mm above bottom
Outlet is not opposite inlet
Water leaking from stopcocks, valves, etc
Water leaking from water pump
Water leaking from water tank
Water leaking from service pipes
Failed meter test
Unsuitable nettings at vents and overflow/warning pipes
Nettings at vents and overflow/warning pipes not in good condition
Nettings at vents and overflow/warning pipes tampered with
No inspection manhole
Size of inspection manhole is less than 450 mm
All exposed stopcocks spindle heads not tilted 45° or 90° towards the wall
Sampling tap not installed at the water tank body or the out-going pipe
Sampling tap not installed at the washout pipe
Sampling tap at washout pipe installed after the washout valve
Others: ______
† Tick where applicable
Note: In Annex A of Singapore Standard CP48 - Code of Practice for Water Services, before the commencement of any cleaning and disinfection work, a joint inspection with the owner or his representative shall be carried out to check on the condition of the water storage tank (including its associated fittings such as the overflow pipes, air vents, nettings, tank manhole covers, etc and ancillary equipment). The checklist given above is meant to assist in the inspection of the water storage tank and it is by no means an exhaustive list.
Please attach this checklist together with the form for “Inspection & Certification of Water Storage Tank by Licensed Plumber” in your submission for certification.
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RELEASE 1