The Environmental Health Department, also known as EHD, is governed by San Joaquin County in California. The department inspects restaurants, mobile food units, employee housing shells, hotels and public water systems. It enforces environmental health regulations associated with various business and construction activities. The Environmental Health Department also offers assessment services for dairies, wells and underground storage tanks. The department works with several agencies to coordinate hazardous materials program inspection and permitting activities. In addition, it provides emergency response services for hazardous waste incidents. The Environmental Health Department s childhood lead poisoning prevention programs assist to promote the importance of screening children for lead poisoning possibilities.