So in this case, like the time before, they dig a big hole which looks ominous. Then they look inside the hole for a long time. Not sure what they are doing. Then they fill it back up and a few days later the asphalt team comes and covers it with fresh asphalt. There are tons of fresh asphalt patches all over Malaysia's roads too.
We shouldn't complain because water in Malaysia is cheap. Our bill for a generous amount of water each month including some gardening watering comes to 5 RM (about $1.70 USD) per month. Sometimes a couple RMs more.
I should say that this does not include drinking water because we do not drink the tap water here. We drink bottled water which is a sizable expense of about $30 USD a month.