Which would be cheaper: NAWASA or deep well pump?

[crave]

Which would be the cheaper water source?

points to consider:

NAWASA
-potable for drinking
-free maintenance (shoulder ng mga water company: Manila Water and Maynilad Water)
-there is water even though there's no electricity
-alam mo kung gaano kalakas yung consumption mo through billing

Deep Well Pump
- not potable for drinking
- high maintenance when the pump suddenly broke down
- no electricity- no water supply (pump is powered by electricity)
- di mo alam kung gaano ka kalakas comonsume kasi nasa electricity bill na lahat