Water tenders — page 8
1,313 listings tracked right now · page 8 of 28
Grants and contracts for water supply, treatment, reuse and resilience. The active funders are the World Bank and regional development banks, EU LIFE and Horizon, the US EPA, and water utilities procuring through the public-tender feeds. Listed below are the open water tenders and contract notices that landscape produces, taken from each buyer's own notice and re-checked on every refresh.
Procurement is dominated by water utilities, port authorities, municipalities and the development banks financing them. Contracts are typically works or long-term services rather than research, and prequalification on prior comparable projects is common. Development-bank-financed notices follow the bank's own procurement rules, which are generally more open to non-domestic bidders than a purely national tender would be.
This page lists open water tenders and public contracts currently tracked by Raise Lens — 1,313 of them right now, sorted with the soonest deadline first. Every listing has been classified against the sustainability taxonomy rather than matched on keywords, so what appears here is water work rather than anything whose description happens to mention it.
The buyers publishing water tenders and public contracts here include MUNICIPIO DE GUADALUPE ANTIOQUIA, EMPUGIGANTE S.A. E.S.P., GRENOBLE ALPES METROPOLE GEMAPI, among 2 others. Who is funding matters as much as what: eligibility, reporting burden and the realistic timeline to a decision vary far more between buyers than between individual calls.
Geographic coverage on this page spans LATAM, GLOBAL, SUBSAHARAN-AFRICA, SOUTH-ASIA. Eligibility is usually tied to where the work happens or where the applying organisation is registered, and the two are not always the same — worth checking before investing time in an application.
Operation and Maintenance of Wastewater Treatment Plants
••••• Municipality· CO
This tender procures operation and maintenance of wastewater treatment plants and sanitation infrastructure for a Colombian municipality, including septic and hydro-sanitary system upkeep at rural schools. Bidders should have experience in water treatment plant operations, municipal wastewater management, and rural sanitation infrastructure maintenance.
Periodic supply of chemical inputs for water potabilization and treatment plants
••••• organisation· CO
This tender procures periodic supply of chemical inputs (coagulants, disinfectants, pH adjusters) for water potabilization and treatment at drinking-water plants operated by the funder., a Colombian water utility. Bidders should be chemical suppliers or distributors with experience in water-treatment chemistry and reliable delivery logistics to treatment facilities.
Engineering studies – Flood-protection infrastructure monitoring services for a French metropolitan area
••••• organisation· FR
Framework agreement for engineering surveillance and monitoring services of flood-protection infrastructure across Grenoble-Alpes Métropole. Bidders must provide specialized expertise in hydraulic asset management, structural monitoring, and flood-risk assessment.
System maintenance services – water treatment equipment and processes
••••• organisation· RO
This tender procures preventive and corrective maintenance, 24/7 remote monitoring, spare parts supply, and documentation services for drinking water and wastewater treatment equipment and processes operated by AQUASERV across Romania. Bidders should be specialized water utility maintenance contractors or engineering firms with expertise in water treatment systems, remote diagnostics, and asset management.
Chlorine electrolysis systems for swimming pools
••••• organisation· DE
Procurement of membrane-cell chlorine electrolysis systems for swimming pools to replace existing chlorination infrastructure. Bidders should be equipment manufacturers or system integrators specializing in water treatment and pool disinfection technology.
Supply and installation of activated carbon – upgrade and expansion of a major municipal wastewater treatment facility in Germany
••••• Municipality· DE
Procurement of granulated activated carbon for removal of trace contaminants in a wastewater treatment plant filtration system in Münster, Germany. Suitable bidders are chemical suppliers or water-treatment specialists with experience in activated carbon delivery and installation.
Hydrological modelling HydPy Upper Havel Müritz-Elde waterway hydraulic scenarios
••••• organisation· DE
The funder procures conversion and enhancement of a hydrological-hydraulic modelling system (LARSIM to HydPy) for the Upper Havel and Müritz-Elde waterway, including 1D hydraulic modelling and climate-scenario simulations. Bidders must have expertise in hydrological modelling software, water-resource management, and hydraulic engineering.
Engineering services – framework agreement climate adaptation Marquenterre site
••••• organisation· FR
Framework agreement for engineering expertise services supporting climate adaptation of the Marquenterre wetland site in northern France, part of the EU LIFE adapto_plus project. Bidders should have environmental engineering, wetland management, and climate-resilience design capabilities.
Professional Services for Water Resource Conservation and Sustainable Management
••••• Municipality· CO
This tender procures professional services to support water resource conservation and sustainable management of local water sources in Tunja municipality, including custody and maintenance of hydrologically significant properties. Bidders should have expertise in watershed management, environmental conservation, water infrastructure, and project implementation in Colombian municipalities.
Professional Services for Mallorquín Wetland Recovery Project Execution
••••• organisation· CO
This tender procures professional services for environmental restoration of the Ciénaga de Mallorquín wetland in Barranquilla, Colombia. Bidders should have expertise in wetland ecology, habitat restoration, environmental engineering, and project management in tropical ecosystems.
Professional Services for Environmental Complaint and Violation Verification
••••• organisation· CO
This tender procures professional services to handle environmental complaints and violations across water resources, infrastructure, mining, and flora sectors within Colombia's Orinoquía region. Bidders should have environmental compliance expertise, field inspection capability, and knowledge of Colombian environmental regulations.
Management support services for sustainable development water conservation project
••••• organisation· CO
This tender procures management support services for a Colombian environmental authority's sustainable development unit to implement water resource conservation activities in Cartagena's urban area. Bidders should have expertise in environmental project management, water resource conservation, and sustainable development implementation in urban settings.
Project preparation for Integrated Water Resources Management
••••• Bank
AIIB seeks an international hydraulic/hydrodynamic modeling expert to support project preparation for integrated water resources management, likely involving watershed assessment, flood risk, or water allocation studies. Bidders should have advanced modeling expertise, international experience, and familiarity with multilateral development bank standards.
Environmental Engineering Professional Services for Permits and Environmental Control
••••• organisation· CO
This tender procures professional environmental engineering services to support a Colombian regional environmental authority in issuing, monitoring, and enforcing environmental permits and control instruments. Bidders should be environmental engineering firms or consultancies with expertise in permitting, environmental compliance, and territorial management.
Professional Services and Management Support for Environmental Department
••••• organisation· CO
This tender procures professional services to support Colombia's environmental agency (DAGMA) in strengthening payment-for-ecosystem-services schemes for conservation of strategic watersheds in the Santiago-Cali region. Bidders should be environmental consultants, conservation specialists, or ecosystem-services programme managers with experience in watershed management and PES scheme design.
Professional services for environmental capacity-building and water governance
••••• organisation· CO
Professional services to support environmental capacity-building and water governance in Cundinamarca, Colombia, including technical implementation and monitoring of sustainable water security and community environmental actions. Bidders should have expertise in environmental governance, water management, community engagement, and project implementation in Latin America.
Climate-resilient redesign of railway station passage – landscape design per HOAI §39
••••• Municipality· DE
City of Wolfsburg seeks landscape architecture and civil engineering design for a climate-resilient, multifunctional pedestrian passage renovation incorporating sponge-city stormwater management and heritage considerations. Bidders must be qualified landscape/urban design firms with HOAI expertise and climate-adaptation project experience.
Planning services for mechanical treatment stage new construction, Cradle to Cradle principles
••••• organisation· DE
Planning services for redesign of mechanical wastewater treatment stage at Arnsberg–Neheim sewage plant, integrating Cradle-to-Cradle circular principles. Bidders must be engineering/planning firms with wastewater treatment expertise and demonstrated experience in circular-economy design methodologies.
Co-investigator services carbon dynamics aquatic systems COLFLUX project
••••• University· CO
Procurement of co-investigator services for carbon dynamics research in aquatic systems under a Colombian royalties-funded project. Bidder should be a researcher or research institution with expertise in aquatic carbon cycling and limnology.
HDS Treatment Trials
••••• Authority· GB
The funder seeks a specialist supplier to design, mobilise, and operate containerised pilot-scale High Density Sludge treatment trials for zinc-bearing mine waters across three UK sites to validate treatment performance and generate design data. Bidders must have expertise in water treatment engineering, pilot-scale operations, metal-contaminated water remediation, and field-based environmental remediation.
Engineering design services for water reservoir reconstruction – Topile
••••• organisation· PL
Engineering design and permitting services for the reconstruction of a water reservoir in Poland with flood-prevention and climate-adaptation functions, funded by EU climate infrastructure programme. Bidders must be engineering design firms capable of producing detailed project documentation, environmental assessments, and water-law permits.
Framework agreement for bromine-doped activated carbon supply
••••• organisation· DE
Framework agreement for supply of bromine-doped activated carbon to the Ruhleben wastewater treatment plant operated by Berlin Water Works. Bidders should be chemical suppliers or water-treatment material specialists with capacity to deliver specialized activated carbon products.
Supply of chemical inputs and materials for water treatment and potabilization
••••• organisation· CO
This tender procures chemical inputs, materials, and supplies for water treatment and potabilization processes, wastewater plant operation, and solid waste management for a municipal water utility in Colombia. Bidders should be chemical suppliers, water-treatment specialists, or waste-management material providers with experience in public-sector water infrastructure.
Sludge removal and treatment services – 3,000 Mg dewatered municipal wastewater sludge
••••• organisation· PL
Procurement of sludge removal and treatment services for dewatered municipal wastewater sludge (3,000 Mg annually) by a Polish water utility. Bidders must have waste-treatment and sludge-processing capabilities, likely with environmental compliance and logistics expertise.
Heritage garden and arboretum conservation and auxiliary hydraulic infrastructure management services
••••• organisation· ES
This tender procures conservation, improvement, and maintenance of orchards and tree groves at the Generalife palace gardens, plus auxiliary hydraulic infrastructure management. Bidders should be landscape/forestry contractors with expertise in heritage garden conservation and water system maintenance.
Hüller Bach Reconstruction HRB Herne-Hofstraße Ecological Improvement Engineering Services LP 5-6
••••• organisation· DE
Engineering planning and ecological supervision services for the reconstruction of a flood-retention basin and ecological restoration of Hüller Bach stream in Herne, Germany. Bidders must have expertise in hydraulic engineering, structural design, environmental impact assessment, and ecological construction management.
Engineering services – Planungsleistungen HOAI LP 1-9, davon 5-9 optional
••••• organisation· DE
Engineering design services (HOAI LP 1-9) for a new sludge transfer facility with integrated photovoltaic generation (~110 kWh/year), battery storage (50 kWh), and wastewater treatment infrastructure for municipal wastewater authority. Bidders must be qualified engineering/planning firms with experience in industrial infrastructure, renewable energy integration, and environmental engineering.
Engineering services – direction of construction works new wastewater treatment plant Alpuente Valencia
••••• organisation· ES
Engineering direction and supervision services for construction of a new wastewater treatment plant (EDAR) in Alpuente, Valencia. Bidders should be engineering firms with expertise in wastewater infrastructure design, project management, and regulatory compliance for water treatment facilities.
Engineering services – river management landscape master plan feasibility studies GEMAPI
••••• organisation· FR
Engineering and feasibility studies for integrated river management and landscape planning in two Alpine towns, including environmental assessments, regulatory dossiers, and framework agreements for subsequent design/supervision services. Bidders must have expertise in fluvial engineering, environmental compliance, landscape design, and GEMAPI (integrated water management) frameworks.
Engineering design services for retention pond construction – Chruściechów
••••• organisation· PL
Engineering design and permitting services for construction of a retention pond (small water-retention reservoir) in Poland, including full project documentation, environmental/water/building approvals, and construction supervision. Bidders must be engineering design firms with expertise in civil works, hydrology, environmental compliance, and Polish regulatory navigation.
Supply of powdered activated carbon for Dortmund-Deusen treatment plant
••••• organisation· DE
Procurement of powdered activated carbon for a wastewater treatment plant's 4th purification stage to eliminate trace contaminants. Bidders should be chemical suppliers or water-treatment specialists with proven delivery capacity for industrial-grade activated carbon.
Engineering studies – Flood protection project documentation for Ogulina
••••• organisation· HR
Preparation of project and study documentation for flood protection infrastructure for the city of Ogulina, Croatia. Bidders should have expertise in hydraulic engineering, flood-risk assessment, and infrastructure design documentation.
General planning for water treatment facility modernization
••••• organisation· DE
The funder seeks general planning (design and engineering) services for modernization of water treatment facilities at its HKW West power plant, including full desalination plant replacement. Bidders should be engineering/planning firms with HOAI-compliant design expertise in industrial water treatment and power-plant infrastructure.
Drinking Water, Wastewater & Stormwater Infrastructure Planning
••••• organisation· DE
This tender procures engineering planning services for drinking water, wastewater, and stormwater infrastructure in an industrial development zone in Halle, Germany, under HOAI 2021 standards. Bidders should be qualified engineering/planning firms with expertise in water infrastructure design and German regulatory compliance.
Professional Environmental Engineer Services for Municipal Environmental Programmes Implementation
••••• Municipality· CO
This tender procures specialized environmental engineering services to design, implement, and monitor environmental programmes for a Colombian municipality. Bidders must be qualified environmental engineers with expertise in municipal environmental management and programme execution.
Wastewater Treatment Plant Operator Services in Bogotá
••••• organisation· CO
This tender procures operational services for a wastewater treatment plant in Bogotá, Colombia. Bidders should be experienced water/wastewater operators with technical capacity to manage treatment processes and regulatory compliance.
Technical assistance for sanitation system management plans and network studies
••••• organisation· ES
Technical assistance services for drafting comprehensive sanitation system management plans (PIGSS) and sanitation network studies in Spain. Bidders should have expertise in wastewater infrastructure planning, hydraulic modelling, and integrated water resource management.
Integrated hydraulic study Adour Estuary: maritime, fluvial, pluvial dynamics climate change
••••• organisation· FR
Integrated hydraulic study of the Adour Estuary to assess flood risks from marine, fluvial, and pluvial dynamics under climate change, evaluating territorial vulnerability and testing adaptation scenarios. Bidders should have expertise in hydraulic modelling, climate-impact assessment, and coastal/fluvial risk analysis.
Planting and maintenance services of green areas at hydroelectric sites
••••• organisation· FR
The funder seeks a framework agreement for planting, maintenance, and ecological management of green areas at two hydroelectric sites in southwestern France, including vegetation control, riparian management, tree diagnostics, and waste handling. Bidders should be specialized landscape/ecological contractors with experience in sensitive-area vegetation management and environmental compliance.
Wastewater Treatment Plant - Expansion of Hydroelectric Station with Process Water Treatment
••••• Municipality· DE
Planning and engineering services for wastewater treatment plant expansion, specifically a two-stage deammonification process for nitrogen removal at Langwiese treatment facility. Bidders must provide integrated design across civil works, process technology, electrical systems, and structural engineering.
EOI - Mozambique - Climate Proof Preparation of Environmental and Social Impact Assessment (ESIA) and Resettlement Action Plan (RAP) for Rehabilitation and Expansion of Lichinga and Cuamba Cities Water Supply Systems
••••• Bank· MZ
This tender procures environmental and social impact assessment (ESIA) and resettlement action plan (RAP) services for rehabilitation and expansion of water supply systems in two Mozambican cities, with climate resilience integration. Bidders should be consulting firms or engineering practices with expertise in ESIA, RAP preparation, water infrastructure, and climate-adaptation planning in sub-Saharan Africa.
Supply of liquid iron-III salt solution for wastewater treatment
••••• organisation· DE
Procurement of liquid ferric salt solution (iron-III coagulant) for phosphorus removal from wastewater treatment, compliant with DWA-A 202 standards. Bidders must be chemical suppliers or water-treatment material vendors with proven capacity to deliver compliant flocculant products to municipal utilities.
Planning services for floodplain connection at Plittersdorf Old Rhine
••••• organisation· DE
Planning services for two floodplain water-body reconnection structures (weirs/sluices) on the Rhine, part of a nature conservation and compensation project. Bidders should have expertise in hydraulic engineering, floodplain ecology, and river restoration design.
Sewerage management services – Paris (75) – wastewater and stormwater maintenance
••••• organisation· FR
This tender procures preventive and corrective maintenance of wastewater and stormwater treatment installations across Paris sites supported by the USID. Bidders should be specialized sewerage/water infrastructure maintenance contractors with experience in urban utility systems.
Water pollution services – environmental monitoring and supervision framework agreement
••••• organisation· SE
Procurement of environmental monitoring and supervision services for water treatment facilities in Sweden, including pollution control and facility oversight. Bidders with environmental monitoring, water treatment inspection, and regulatory compliance expertise are sought.
Scaling Up Implementation and Institutional Capacity for Energy Management Systems (EnMS) in Pakistan
••••• organisation· DE
GIZ seeks implementation partners to scale Energy Management Systems (EnMS) in Pakistani municipal water and sanitation services, reducing operational costs and GHG emissions. Bidders should have expertise in energy efficiency, municipal capacity-building, and climate mitigation in South Asia.
Consulting services for water supply and waste consultancy framework agreement
••••• organisation· SE
Framework agreement for consulting services supporting water supply security, groundwater prospecting, hydrogeological surveys, and environmental risk assessments for a Swedish water utility. Bidders should be engineering/environmental consultancies with expertise in water resources, hydrogeology, permitting, and geotechnical investigations.
Engineering services – Framework contract environmental studies
••••• organisation· FR
EDF seeks environmental engineering services for regulatory dossiers covering impact assessments, fauna/flora analysis, water/effluent management, and waste studies. Bidders must offer data collection, regulatory analysis, and technical report writing for environmental compliance.