Manual pumps cost less than electric, petrol or diesel powered pumps, but the quantity of water (discharge) they produce is many times lower
Zida zopopera madzi zodalira mphhamvu za anthu ndizosakwera mtengo kuposa zodalira magetsi ndi mafuta a galimoto koma kuchuluka kwa madzi omwe zimatulutsa ndi ochepa kwambiri