FRESNO, Calif. (KSEE/KGPE) – Chemicals that can cause infertility and increase cancer risks are not in Hanford's drinking water, the city announced on Friday. The Utilities and Engineering Department tested 11 city drinking water wells and found no Per- and Polyfluoroalkyl Substances (PFAS). According to the State Water Resources Control Board, PFAS are a large group of potentially harmful substances that have historically been used in industry and consumer products, such as non-stick cookware and stain-resistant fabrics and carpets. The substances can contaminate drinking water when they are used or spilled onto the ground or into lakes and rivers. “Clean and reliable drinking water is paramount to overall public health and the quality of life for Hanford residents,” said Utilities and Engineering Director Frank Senteno. “With these results, our customers can be assured that their water is free from PFAS.”  City officials say they occasionally receive questions about the drinking water's color and smell. Sand and debris may appear due to deposits in the system, but the deposits are not a health concern, officials say. One more Hanford well is still to be tested; officials say it is currently undergoing maintenance and is offline.