When I was kid, I use to see, the roads were not asphalted end to end completely, on both sides some portion with soil used to be left out, during rain, a lot of rain water used get soaked by soil giving way for high ground water, we should do that rather doing rainwater harvesting at home level.
Yes, remember those days :) Thank you for that memory :) 1 edit to your suggestion: we should do that (roadside water seeping to ground), alongwith doing rainwater harvesting n saving every drop of water at our homes :)