Yes Storage tanks are old system. But even in that too modern methods are employed to build storage tanks. This is what AP CM told in a press conference, while answering a question, How he is going to to handle the water crisis.

Please share a link on this preserve conference 

Definitely I do. the moment i get a link. Why should i hide any thing. rather i would be happy to post a link.

We will see about that because you are anything but truthful

Here is the link.

http://www.deccanchronicle.com/nation/politics/180516/n-chandrababu-naidu-briefs-pm-narendra-modi-on-andhra-pradesh-drought-situation.html

I doubt if you checked the date if the article, for your information it is lastly years article and has nothing revolutionary about it. .

If you doubt about the date, I will provide you the latest link.

But naidu  explaining latest situation about water scarcity to Modi is the latest news.

Lol...Great at wriggling out , which is your expertise 

I gave the link too. What more I can do ?

Sure about outdated link ...You are good at twisting things ..