Now A Day’s Every One Wasting The Water. And No One Care About Water Saving. Every One Forgetting To Turn Off The Motor After Filling Of Tank Etc. So Due To This Water Continuously Wasting From MUNICIPALITY And No One Paying Water Bill To The Municipality. Here This Project Proposing That How To Save Water And Prepaid Billing, We Are Designing A System With Time Based Auto Turn Of Motor Pump Using Simple And Low Cost Device. Prepaid Smart Card Every Time We Need To Recharge It To Maintain Sufficient Amount. First We Need To Place The Smartcard In Smartcard Reader And It Will Read By Micro Controller