Haverhill residents are once again being asked to voluntarily conserve water but one councilor suggests the city needs to impose stricter controls. Voluntary measures include fixing faucet and toilet leaks, not allowing water to run when brushing teeth and shaving, taking shorter showers and watering only vegetable gardens and new lawns and trees. But Ward 3 City Councilor Devan M. Ferreira pointed out several neighboring communities already imposed mandatory bans due to widespread drought conditions in Massachusetts. She asked whether voluntary measures actually work. Councilors also established a similar fund to receive gifts for the William J. Macek Memorial Park, 90 Concord St. Macek was a city councilor for 26 years.