Env-Wq 1703.22(l) waters

The Env-Wq 1703.22(l) Waters GIS feature layer identifies surface waters located within 20 miles upstream of a public water supply intake where the drinking water Maximum Contaminant Level (MCL) is applied as the water and fish ingestion criterion. This applies when the MCL is more protective than the standard surface water quality criteria outlined in Env-Wq 1700. This layer supports water quality protection efforts and is used to inform regulatory decisions and public health safeguards.