#demand-management

A national framework that sets basin-level withdrawal-reduction targets, funds leak repair, unblocks wastewater-reuse permitting and pushes progressive pricing. Delivery depends on municipal-scale mechanisms and sustained funding, not on the announcement itself.

Retire urban water demand permanently by running demand management as a standing institution with paid turf removal, tiered pricing, appliance and landscape codes, school and business programs, and continuous leak control. Las Vegas cut per-capita use 58% while adding 876,000 res

Cut urban water demand fast during a supply crisis by combining real-time public dashboards, escalating restriction levels and block tariffs, network pressure management, flow restrictors, and a communicated deadline—with the burden visible and uniform across the city.

Plan Eau, announced 30 March 2023 after the 2022-23 droughts left hundreds of communes on emergency water measures, set 53 measures, a national target of minus 10% withdrawals by 2030, and 1,000 wastewater-reuse project…

Zaragoza's "Water Saving City" program was launched in 1996 by ECODES (Fundacion Ecologia y Desarrollo) with the City of Zaragoza and EU LIFE funding. The program combined mass public awareness campaigns, a catalog of 5…

Southern Nevada is the reference case for demand management run as a permanent institution rather than a crisis response. Since 2002, under pressure from the Colorado River's long-term decline, SNWA has built a standing…

Catalonia's 41-month drought (2021–2024, reservoirs below 16%) demonstrates a statutory, staged emergency demand management framework applied to ~6 million people. A drought decree escalated through pre-defined stages,…

Chennai in June 2019 illustrates what happens when a megacity reaches Day Zero with no meaningful pre-crisis demand management in place. The city's four main reservoirs fell to roughly 0.1 percent of capacity. There was…

During the 2014–2015 Cantareira reservoir crisis, Sabesp implemented a bonus tariff offering a 30% bill discount to households that cut consumption by 20% or more. This reward-framed instrument achieved a 25–27% demand…

With the Chingaza reservoir system down to 16.5 percent capacity, metro Bogota (around 11 million people) ran a full year of rotational rationing from April 2024 to April 2025. The city was divided into nine rotating zo…

Facing a 1-in-300-plus year drought, metro Cape Town (4 million people) deployed a full emergency demand management package: Level 6B restrictions capping use at 50 liters per person per day from 1 February 2018, steep…