Treatment with neutralized electrochemically activated solutions (ECAS) may improve water quality in dental unit waterlines (DUWL), according to a study recently published in the Journal of the American Dental Association. Furthermore, using ECAS for shock treatment and continuous maintenance reduced bacterial counts by disrupting and preventing biofilm regrowth in DUWL, the authors wrote. One group received shock treatment twice a month for five months, and the other received weekly shock treatments for four months, they wrote. After five months, the group that was treated twice per month showed significantly reduced bacterial counts compared with the control group (p < .001), confirming that ECAS effectively reduced planktonic bacteria in DUWLs. Starting in the second month, this same group consistently had significantly lower counts (p < .001), with the greatest differences in the fourth and fifth months (p < .001), they wrote.