Drinking water regulation violations by individual community water systems in the Great Lakes Basin

This item has been deprecated by GLC and has a recommended replacement. View replacement This dataset on drinking water regulation violations in the Great Lakes basin is one of the sources for Blue Accounting's US Drinking Water Regulation Violations dashboard. Visit Blue Accounting's page here for more context about our work to track the percentage of water supplies in the Great Lakes basin that meet treatment requirements as water leaves the treatment plant. HB: Number of health-based drinking water violations for a given community water system (CWS) and year. AHB: Number of acute health-based drinking water violations for a given community water system (CWS) and year. M_R: Number of monitoring and reporting drinking water violations for a given community water system (CWS) and year. PN_O: Number of public notification and 'other' drinking water violations for a given community water system (CWS) and year. Violation types are described on Blue Accounting's metric page as well as in the dashboard here.