Recently, my water bill unexpectedly increased from the usual RM10 per month to RM30 per month, despite no changes in my water usage.

This makes me suspect there might be a leak in one of the water pipes in the house. I searched the entire house for water marks but couldn’t find any visible signs of leakage.

As a temporary measure, I’ve been turning off the main water valve when leaving for work during the day and turning it back on when I return home. However, I’ve noticed that when I turn the water back on, the kitchen tap releases a lot of air before the water flows normally.

Could this indicate a leak in the incoming water pipe buried underground? What’s the best way to detect and pinpoint the location for repairs?

Thanks in advance.

tq all. decided to call a plumber to do a new pipe externally. Gave up to find the source of leaking.

Any good plumber to introduce?