Blackwater (disambiguation)

Blackwater or Black Water may refer to:

Health and ecology
 Blackwater (coal), liquid waste from coal preparation
 Blackwater (waste), wastewater containing feces, urine, and flushwater from flush toilets
 Blackwater fever, an acute kidney disease
 Blackwater river, a classification of river with dark-colored waters

Places
 Blackwater, Queensland, a coal mining area in Australia
 Blackwater, Ontario, a community in the Township of Brock, Ontario, Canada
 Blackwater, County Wexford, a rural village in Ireland

United Kingdom
 Blackwater, Cornwall, a village
 Blackwater, Dorset, a small hamlet
 Blackwater, Hampshire, a small town
 Blackwater railway station
 Blackwater, Isle of Wight, a village
 Blackwater railway station (Isle of Wight), a former station
 Blackwater Reservoir, a reservoir in the Scottish Highlands

United States
 Blackwater, Arizona, a census-designated place in Pinal County
 Blackwater National Wildlife Refuge, a waterfowl sanctuary in Maryland
 Blackwater, Missouri, a city
 Blackwater, New Mexico, a power exchange between Texas and New Mexico
 Blackwater Dam, a flood control dam in New Hampshire
 Blackwater Draw, an archaeological site in New Mexico and a dry watercourse that extends across the Llano Estacado, Texas
 Blackwater Canyon, a gorge in West Virginia

Rivers
 Black Water (Conon), a river in the highlands of Scotland
 Blackwater River (Kerry), a river in County Kerry
 River Blackwater, County Cavan, a river in the north-west of County Cavan, Ireland
 Munster Blackwater, a river in the counties of Kerry, Cork, and Waterford, Ireland, also known as Blackwater
 Kells Blackwater, a river in the counties of Cavan and Meath, Ireland, also known as the Leinster Blackwater
 River Blackwater (Northern Ireland), a river which runs through County Armagh and County Tyrone, Northern Ireland, as well as County Monaghan, Ireland
 River Blackwater, Essex, England