The Metropolitan District Commission (MDC) provides quality water supply, water pollution control, mapping, and household hazardous waste collection to eight member municipalities: Bloomfield, East Hartford, Hartford, Newington, Rocky Hill, West Hartford, Wethersfield and Windsor. Environmental Factors : Essential functions are performed primarily outdoors, frequently exposed to any or all of the following: various weather conditions, high or deep dangerous places, working near moving mechanical parts, risk of electric shock, vibration, fumes, airborne particles, chemicals, etc.