As required by State Regulation 310 CMR 22.22, and in accordance with the Town of Webster Cross Connection Control Program, irrigation systems must be protected with a backflow prevention device and must be tested annually by a State Certified Tester. The backflow device test report must be submitted to the Webster Water Department for our records. A list of certified testers can be found at A list of certified testers can be found at www.mass.gov/eea/docs/dep/water/cclist.pdf.