Apparently not.
At 6:11 p.m., the bridge over the intersection collapsed in front of Lotus Lat Krabang, Ladkrabang Fire and Rescue Station officials arrived at the initial scene, with 3 serious injuries, 4 minor.
With a 700 mm pipeline direct from the mainland, Samui should be OK.
Some wells are already running dry on Koh Tao and prices in certain areas are now 5-700 baht/m3.
How is Koh Phangan doing?
https://www.teamgroup.co.th/en/portfolio/expansion-of-provincial-water-supply-koh-samui-branch-phase-1-part-2/
Storage is way cheaper. With a surface area of 228 km2, 2 m rainfall and a population of 70,000, Samui is on average receiving 18 m3/day/person.
Plenty for everyone, if you can just store it from the rainy season to the dry season.
Why don't you collect rain water?
Samui is getting about 2 m of rain annually and with a bit of filtering it is crystal clear.
I have 50 m3 of storage and exclusively use rainwater.