Chlorine Analyzers & Water Conservation A California city colved its water waste and infrastructure challenges with a new in-pipe chlorine sensor THE WATER SUPPLY for the City of Lakewood (Calif.) is 100% groundwater. The city draws all of its water from the CentralBasin aquifers and pumps approximately 6,500 acre-feet of groundwater per year, operating 11 deep wells with approximately 180 miles of water mains that range from 4-27 inches in