Lisbon (PRT)
“In 2020, Lisbon was European Green Capital, an award that recognized the city's transformation to improve its urban environment and climate resilience. Following the award of this distinction, Lisbon created the “Lisbon Green Commitment”, launching the challenge to society, companies, organizations, associations and institutions, public and private, to join the city's climate agenda for the decade.”
Mayor Mr. Carlos Manuel Félix Moedas
Água+
“Lisbon Parks and Gardens: the same green, the water is different. Sustainable irrigation with Água+” is the first licensed project in Portugal to reuse water for irrigating municipal gardens. It began in Lisbon on March 22, World Water Day, and is the result of a partnership between Lisbon Municipality and Águas do Tejo Atlântico.
The project started in 2022 in the green areas in Parque das Nações Norte, where Água+ started being used, in an area of approximately 30 hectares, and an annual water volume for irrigation of 300,000 m³. The new sustainable irrigation uses wastewater received and treated at the Beirolas Water Factory, as an alternative to natural abstraction.
In 2023, the Lisbon Municipality started irrigation with reclaimed water (ApR) of a new green area in the city: a 38 hectare park on a landfill site decommissioned in the 1990s. This green area was rehabilitated to receive the World Youth Day in 2023.
This project was developed under the scope of Lisbon’s Strategic Water Reuse Plan. This plan will allow the municipality to save 3 million m³ of drinking water by 2025 (around 75% of current consumption) and enable the city’s large consumers to save up to 6 million m³. It involves the creation of a 55 km reuse network—Água+—fed from Lisbon’s three wastewater treatment plants.
Lessons learned and recommendations
A key component of Lisbon’s adaptation strategy is a well-established and expanding green infrastructure, as a green-blue problem-solving infrastructure to ensure citizens’ quality of life and the sustainability of urban living.
The use of reclaimed water is of the utmost importance, as Lisbon is committed to safe water reuse and efficiency at municipal scale. This allows us to reduce freshwater dependency and eliminate drinking water use for municipal non-potable purposes.
Reuse projects imply, however, significant initial investments, for which more funding opportunities would be advisable.
Budget
Future rehabilitation of the network is estimated at €700,000.
Annual monitoring costs are approximately €20,000.
Waste management ranks among the top in Italy (separated waste collection went from 53% in 2014 to 87% today, with minimal production of non-recyclable waste and a “pay-as-you-throw” tariff). Treviso is the leading provincial capital in Italy since 2018.
Over the past many years, efforts have been made to refine the system of household waste collection and reduce residual waste.
The Municipality of Elsinore's canteen has created a new culinary identity focused on organic food, sustainability, and reduced food waste. The staff came up with five guiding principles to ensure that their values are incorporated into all aspects of the canteen's day-to-day operations.
As part of Viladecans Climate Pact, several actions have been launched with stakeholders: reducing food waste in schools, using oranges from urban trees for jam; channeling surplus food from hospitals to social organisations, etc.
Use of groundwater in the Riera Seca neighbourhood: Due to the climate emergency, the first phase of this project was implemented to use groundwater from Riera Seca to irrigate local gardens and refill the city’s street-cleaning vehicles.
Sustainable meals in public kitchens: To reduce food-related emissions and waste, all public kitchens now follow five guidelines for more sustainable meals, backed by staff training and a green procurement strategy to ensure organic and local ingredients.
The city has built nine structures to manage pollution from rainwater and stormwater, including a special pumping station to reduce nutrient levels in the freshwater lake, plus over 100 constructed wetlands to boost biodiversity and cut nutrient pollution.
The Municipality, in partnership with LIPOR, invested in creating a network of community gardens to promote sustainable agriculture practices.
Initiative “Don't Buy Extra, Bring Your Own!”: Liepāja encourages reducing single-use packaging by promoting reusable containers for take-away food and drinks.
CWC (City Water Circles) promoted water-efficiency measures and reuse of local non-conventional water sources—rainwater and greywater—for public and domestic use around public and residential buildings.
360.come promotes environmental literacy and sustainable practices to reduce school canteen food waste by 10%, using growing kits and local producer maps to encourage healthy eating and local consumption, impacting city’s ecological footprint.