Errwood Reservoir – Stockport Corporation Waterworks acquired Goyt Valley for the building of two reservoirs and by 1930 the farms and houses were empty and demolished in order to provide an uncontaminated water catchment area.

Both Errwood reservoir and Fernilee reservoir were built by Lehane Mackenzie and Shand.

Fernilee reservoir was completed in 1938. It cost about £480,000 and holds 4940 million litres (1,000 million gallons) and is 126 feet deep.

Errwood reservoir was completed in 1967. It cost £1.5 million and holds 4215 million litres (927 million gallons) and is 117 feet deep.