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In 1957, Valencia began its plan to permanently cover its urban irrigation ditches, a lengthy process that originated in the urban expansion that came after the demolition of the city walls in 1865 and followed the hygienist and rationalist principles of 19th-century urban planning. For centuries, the irrigation ditches had served a dual purpose: as an irrigation system and an urban sanitation network. The reuse of wastewater, together with sludge, provided valuable nutrients to the medieval agrosystem and created a relationship of interdependence that benefited both the city and the surrounding area.
This balance gradually weakened until, with the Preliminary Project for the Improvement of Sanitation in Valencia (Pla Sur, 1968), a network of collectors was designed that definitively separated irrigation from urban drains, as a result of the environmental problems caused by discharges. Geographer Roland Courtot described this transformation as the transition ‘from…
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In 1957, Valencia began its plan to permanently cover its urban irrigation ditches, a lengthy process that originated in the urban expansion that came after the demolition of the city walls in 1865 and followed the hygienist and rationalist principles of 19th-century urban planning. For centuries, the irrigation ditches had served a dual purpose: as an irrigation system and an urban sanitation network. The reuse of wastewater, together with sludge, provided valuable nutrients to the medieval agrosystem and created a relationship of interdependence that benefited both the city and the surrounding area.
This balance gradually weakened until, with the Preliminary Project for the Improvement of Sanitation in Valencia (Pla Sur, 1968), a network of collectors was designed that definitively separated irrigation from urban drains, as a result of the environmental problems caused by discharges. Geographer Roland Courtot described this transformation as the transition ‘from…
