DNIT for Replenishment of top layer and washing for smooth running of filter beds for Water Works Lohar Heri 4 Nos. 7.31 x 4.88 M each, for Water Works Rohad 3 Nos. 9.144 M dia each, 4 No. 8.23 M dia each, for Water Works Sarai Aurangabad 4 Nos. 7.01