Editing Esholt (section)

==== History ====
As Bradford's population and the textile industry grew in the early 19th century most human waste and industrial effluent drained into [[Bradford Beck]], to the canal basin and on to the [[River Aire]] flowing past Esholt.<ref name="EASCFT1"/>

[[File:Ventilator shaft - geograph.org.uk - 266308.jpg|left|thumb|Frizinghall ventilation shaft]]

In 1862 a sewage system was begun in Bradford but Bradford Beck was still polluted. In 1869 William Stansfield of Esholt Hall obtained an injunction requiring Bradford Corporation to improve the sewage system so as not to pollute the beck.
Bradford Corporation built a treatment works at [[Frizinghall]] to treat sewage before the water was put in the river.<ref name="EASCFT2">{{cite web |last=Garnett |first=Breedge |title=Esholt: A suitable case for treatment! (2) |work=BBC Home |access-date=2 October 2011 |date=September 2002 |url=https://www.bbc.co.uk/bradford/sense_of_place/hidden_esholt_2.shtml}}</ref>

[[File:Esholt Sewage Works, press house. - geograph.org.uk - 757577.jpg|right|thumb|Press House, Esholt]]

When Frizinghall works could not cope with the waste the Esholt estate was acquired for more than £239,000 as the site for a new sewage works. A three-mile long tunnel between Frizinghall and Esholt to connect the sites was completed in the 1920s.
Frizinghall works closed in 1926.<ref name="EASCFT3"/>
The tunnel has ventilation shafts in [[Frizinghall]], [[Wrose]]<ref name="G:SfFtEST-BW">{{cite web |last=Spencer
|first=David |title=Shaft for Frizinghall to Esholt sewage |work=Geograph |access-date=17 October 2013 |date=8 July 2005 |url=https://www.geograph.org.uk/photo/24917}}</ref>
and [[Idle, West Yorkshire|Idle]].<ref name="G:SfFtEST-I">{{cite web |last=Spencer |first=David |title=Shaft for Frizinghall to Esholt sewage |work=Geograph |access-date=8 February 2014 |date=7 July 2005 |url=https://www.geograph.org.uk/photo/24924}}</ref>

In the site's Sludge Disposal Building later known as the Press House, 128 steam filter presses compressed sludge to recover grease ([[lanolin]]) which could be used for a variety of applications, and the press residue was sold as fertiliser to meet the cost of operating the plant.<ref name="EASCFT4">{{cite web |last=Garnett |first=Breedge |title=Esholt: A suitable case for treatment! (4) |work=BBC Home |access-date=2 October 2011 |date=September 2002 |url=https://www.bbc.co.uk/bradford/sense_of_place/hidden_esholt_4.shtml}}</ref>
After Bradford's woollen textile industry declined, the Press House became roofless and derelict.<ref name="EASCFT4"/>