Aqua Metrology Systems has completed the successful demonstration of their SafeGuard™ H2O proof of concept for the treatment of hexavalent chromium (Cr(VI)) at the City of Los Banos in California. The novel technology generates a stannous ion reagent in-situ via an electrolytic process and also features an online Cr(VI) monitoring analyzer to ensure remediation of Cr(VI) to below 10 ppb.