No. Don't wait for authorities. If cannot get good industrial pump, just get the normal pumps (or those used for fish ponds) from hardware shop or homepro/homework. Just get the higher flow capacity ones. Actually the other thing is the electricity. If no electricity, pumps also no use. Now, understand why my friend's pumps and generator are targeted as a motorcycle in the same place was left intact.
i intend to go get a mobile generator tomorrow to charge my mobile if I am stranded for a few days at home as I believe electricity surely cutoff.
I haven't filled a sandbag since my NS days. All that filling & lifting must be tough if you are a civilian:(
I hate sandbags cos I was one of them sappers before. So I now runroad to Thailand have people fill for me. Anyway I am very lucky to have a good gardener who come to my house to pick the leaves and take care of my small garden everyday. I asked him to take his pickup to buy some sandbags but must have sand inside. My stafff wanted to help me buy and told me it costs 55 baht without sand. But this gardener went around to get my 100 sandbags filled at only 40 baht. He is a wonderful guy because each person is only allowed 20 bags so he and his wife got to take turns going back to the queue. Anyway I needed another 100 bags and he will delivery tomorrow. He unloaded the bags to near the doors while I do my own "fortification" as I trust only myself to do it.