By then the need to increase the supply of fresh water to serve London's growth meant that water companies were building new facilities. Two covered reservoirs were constructed on Maiden Lane (since renamed Dartmouth Park Hill) in 1855 by the New River Company and connected to its new waterworks and pumping station by Stoke Newington reservoirs, two boroughs to the east. Later owned by the Metropolitan Water Board, the reservoirs are now owned by Thames Water Utilities.
Geography
Land use and housing
Dartmouth Park is an overwhelmingly residential district. It has a relative (inherently housing-related) emphasis on housing those with middle-to-higher incomes and, by Inner London standards, the retired. Immediately north is the Holly Lodge Estate and then Highgate. Dartmouth Park is separated from Kentish Town to the south by the Gospel Oak to Barking (railway) line. Housing is predominantly detached, terraced and semi-detached houses, late Victorian and Edwardian mansion flats (notable examples include Brookfield Mansions and the blocks in Lissenden Gardens), and some post war housing such as Haddo House.
A small, landscaped park, Dartmouth Park, is immediately to the east in Islington, adjoining Dartmouth Park Hill. It was laid out on the edge of the reservoirs and opened to the public in 1972. Much of it is taken up by the reservoir tank. It has a children's playground. The top of the slope gives an open semi-panorama. The park has an enclosed seating area surrounded by a hedge, which local children helped to plant in 1991. The park hosted one of the beacons lit nationwide on 21 April 2016 to celebrate Queen Elizabeth II's 90th birthday.
Landmarks
The Anglican church is St Mary Brookfield, designed by William Butterfield and opened in 1875. It is red brick with contrasting yellow and blue brick patterns.
The street named York Rise, bisects the district, forming a gentle vale taken up by the Fleet stream then one of the successive Fleet combined sewers, each intercepted by Joseph Bazalgette's great interceptor sewers, before doing so crossing the railway tracks in a visible large iron pipe.