"As a result of the last five years of research, our research team has developed a reliable novel, plasma water treatment by electrical discharge method. In this method, water is showered between electrodes with discharge pulses of voltage pulse amplitude of 18-20 kV. By this method we can produce drinking water as suitable for consumption as the one produced by ozonation. No carcinogens are produced and the process is three times less expensive"
Read More: https://phys.org/news/2019-04-scientists-technology-purification-electric-discharges.html