Water & Sanitation Tenders & Grants

Find tenders and grants for water supply, sanitation and hygiene (WASH), wastewater treatment, desalination, irrigation and integrated catchment management. Curated for water engineering firms, WASH NGOs, desalination and treatment plant operators, and irrigation contractors.

7,799 open opportunities in this category

Who this is for

Water engineering consultancies, WASH NGOs, desalination and treatment operators, irrigation contractors, utility operators.

Top Funders

Major sources of procurement and grant funding in this category:

World Bank

Water Global Practice and GWSP trust fund.

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AfDB

African Water Facility.

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ADB

Water Financing Programme.

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UNICEF

WASH procurement for humanitarian response.

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USAID

Water Security, Sanitation and Hygiene Partnership.

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Water & Sanitation Opportunities

Here is a selection of recent tenders and grants. Register for free to view all water & sanitation opportunities.

Water & Sanitation Tenders

Supply and Delivery of 1 (One) 8.5-ton Single Cab Truck with custom tray

TENDER Open

Australia, Victoria 12 Oct 2026 (Closes in 13 days) VIC-334123

Supply and Delivery of 1 (One) 8.5-ton Single Cab Truck with custom tray

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26-007F National Multi-Supplier Framework for the Provision of Laboratory Services

TENDER Open

Ireland 23 Oct 2026 (Closes in 24 days) IE-9141690

Uisce Eireann is seeking to establish a high-quality sampling and or analysis service to achieve efficiencies in all commercial laboratory contractual arrangements, to meet regulatory requirements, and to protect public health. These services will be sub-divided into Three (3) Lots described below as Lot 1, Lot 2 and Lot 3. Applicants may apply for one, some or all Lots. For Lots 1, 2 and 3 the...

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Single Party Framework Agreement for the Provision of Energy Efficient Design Services

TENDER Open

Ireland €500K 2 Nov 2026 (Closes in 34 days) 3082

The Energy Efficient Design (EED) process is intended to ensure that the Contracting Authority’s capital projects are conducted in accordance with objective and methodical protocols and procedures. The overall EED process comprises organisational measures, processes, guiding principles and control mechanisms to be implemented during the design of projects, with the targets of (i) reducing the l...

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Tender for the investigation, drilling, rehabilitation, equipping, installation, commissioning and handover of groundwater infrastructure for unserved communities in Gauteng and Mpumalanga provinces for a period of six (6) months

TENDER Open

South Africa, Gauteng 16 Oct 2026 (Closes in 16 days) RW10420384/26

Tender for the investigation, drilling, rehabilitation, equipping, installation, commissioning and handover of groundwater infrastructure for unserved communities in Gauteng and Mpumalanga provinces for a period of six (6) months

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Wastewater Treatment Facility Annual Mechanical Services

TENDER Open

United States, Massachusetts 8 Oct 2026 (Closes in 9 days) BD-26-1306-NADPW-NADPW-133491

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Microsoft Power Platform Enhancement and Resource Augmentation Services - SR01513

TENDER Open

Australia, New South Wales 15 Oct 2026 (Closes in 16 days) NSW-SR01513

Microsoft Power Platform Enhancement and Resource Augmentation Services - SR01513

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SWSC Bid No. 27-13 Springfield Reservoir Culvert Replacement Project

TENDER Open

United States, Massachusetts 22 Oct 2026 (Closes in 23 days) BD-27-1531-SWSPD-SWSPD-133651

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Water Data Management Tools

TENDER Open

Australia, Western Australia 20 Oct 2026 (Closes in 21 days) WA-DWER101726

Agency: Department of Water and Environmental Regulation. Category: Information Technology Broadcasting and Telecommunications. Type: Tender

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Cross Connection Control & Back Flow Device Testing Program

TENDER Open

United States, Massachusetts 20 Oct 2026 (Closes in 21 days) BD-27-1784-LWS1-LWS1-133622

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EPA - Call Centre and Safety Journey Management Services

TENDER Open

Australia, South Australia 26 Oct 2026 (Closes in 26 days) SA-DEW059382

EPA - Call Centre and Safety Journey Management Services. Issued by: Department for Environment and Water

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ITB - Purchase of Aluminum Sulfate Solution 2026

TENDER Open

United States, Oregon 30 Sep 2026 (Closes tomorrow) S-X34350-00017994

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ITB - Purchase of Sodium Bisulfite 2026

TENDER Open

United States, Oregon 30 Sep 2026 (Closes tomorrow) S-X34350-00017997

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ITB - Purchase of Sodium Hypochlorite Solution

TENDER Open

United States, Oregon 30 Sep 2026 (Closes tomorrow) S-X34350-00017999

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MWRA Contract No. EXE-050 Security Equipment Maintenance and Repair

TENDER Open

United States, Massachusetts 16 Oct 2026 (Closes in 17 days) BD-19-1212-MWRA-DITP-133501

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Replacement and Rehabilitation of Water Mains, Storm Drains and Sewers in Hyde Park

TENDER Open

United States, Massachusetts 14 Oct 2026 (Closes in 15 days) BD-19-1131-BWSC1-BWSC1-133262

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Wastewater Treatment Plant Capacity Expansion

TENDER Open

Australia, Western Australia 29 Oct 2026 (Closes in 30 days) WA-DBCARIAT0127

Agency: Rottnest Island Authority. Category: Building and Facility Construction and Maintenance Services. Type: Tender

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EOI for lease of Cross Country Ski Equipment Shop, Perisher Valley, Kosciuszko National Park – EOI-2982 - EOI-2982

TENDER Open

Australia, New South Wales 23 Oct 2026 (Closes in 24 days) NSW-EOI-2982

EOI for lease of Cross Country Ski Equipment Shop, Perisher Valley, Kosciuszko National Park – EOI-2982 - EOI-2982

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Loveday and Mussel Lagoon Infrastructure Upgrades

TENDER Open

Australia, South Australia 12 Oct 2026 (Closes in 12 days) SA-DEW059307

Loveday and Mussel Lagoon Infrastructure Upgrades. Issued by: Department for Environment and Water

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Filed Sub Bid - GP3 Replacement Well Implementation Project

TENDER Open

United States, Massachusetts 1 Oct 2026 (Closes in 2 days) BD-21-2174-SWD50-SWD50-133265

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General Bid - GP3 Replacement Well Implementation Project

TENDER Open

United States, Massachusetts 8 Oct 2026 (Closes in 9 days) BD-21-2174-SWD50-SWD50-133266

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Dead Horse Gap Walking Track Renewal Works 2026-27 – Kosciuszko National Park - SR01462

TENDER Open

Australia, New South Wales 5 Oct 2026 (Closes in 6 days) NSW-SR01462

7 Months

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SWSC Bid No. 27-04 Cobble Mountain Hydrostation Crane Replacement REBID

TENDER Open

United States, Massachusetts 30 Sep 2026 (Closes tomorrow) BD-27-1531-SWSPD-SWSPD-132622

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Cocos west island seawater desalination plant – design and construct

TENDER Open

Australia, Western Australia 1 Oct 2026 (Closes in 2 days) WA-WC7000015480

Agency: Water Corporation. Category: Building and Facility Construction and Maintenance Services. Type: Tender

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Jindabyne Wastewater Treatment Plant - Construction - RFT-2016441

TENDER Open

Australia, New South Wales 29 Oct 2026 (Closes in 30 days) NSW-RFT-2016441

66 weeks

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SBC0826 athletics track refurbishment works at ridlins stadium, stevenage

TENDER Open

United Kingdom 5 Oct 2026 (Closes in 6 days) CCD01862

Stevenage Borough Council are currently seeking tenders for the provision of ATHLETICS TRACK REFURBISHMENT WORKS AT RIDLINS STADIUM, STEVENAGE This procurement is a below threshold advertised tender . Organisations wishing to take part in this project are invited to ‘express an interest’ and also ‘opt in’ which will give access to the full tender documents in the e-tendering system. Mandatory s...

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Water & Sanitation Grants

OIA Technical Assistance Program 2026

Open US OIA-TAP-2026

United States

The Office of Insular Affairs (OIA) is seeking proposals for its Technical Assistance Program (TAP), which offers grant funding for short-term projects aimed at addressing the immediate needs of insular areas. The TAP program provides discretionary grant funding to tackle urgent economic, financial, government service, and capacity challenges in the insular areas.

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Ocean and Coastal Mapping Center 2026

Open US NOAA-NOS-OCS-2025-30563

United States

The purpose of this notice is to solicit proposals for a single cooperative agreement between NOAA and an institution of higher learning as authorized in the Ocean and Coastal Mapping Integration Act and the Hydrographic Services Improvement Act. Proposals submitted in response to this announcement should advance the purposes of the Acts by addressing the Program Priorities described in this announcement.This will be a 5-year, multiyear award. The intent is to make a single 5-year award. Total anticipated funding for this award is approximately $8,500,000.00, with approximately $1,600,000.00 to be released in FY 2026 and each subsequent year of the 5 years.

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Monarch Butterfly and Pollinator Rescue

Open Environment & Water US

United States

The Monarch Butterfly and Pollinator Rescue Program was created by Assembly Bill 2421, and signed into law in 2018 becoming effective immediately. The Program was created for the purpose of recovering and sustaining populations of monarch butterflies and other pollinators. Eligible activities under this program include: Provide grants for the restoration or enhancement of California prairie and other appropriate breeding habitat for monarch butterflies and pollinators on private and public lands. Provide grants for the restoration or enhancement of overwintering monarch butterfly habitat on private and public lands. Provide technical assistance to grant recipients, including farmers and ranchers, regarding restoration and enhancement of breeding, overwintering, and other appropriate mon...

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Greenhouse Gas Reduction Loan Program

Open Energy; Environment & Water US

United States

The GHG Reduction Loan Program provides funds to support new or expanded organics infrastructure, such as composting and anaerobic digestion facilities, as well as for facilities that manufacture fiber, plastic or glass waste materials into beneficial products. The purpose of this investment is to further the purposes of the California Global Warming Solutions Act (Assembly Bill 32), reduce methane emissions from landfills and further GHG reductions in upstream resource management and manufacturing processes; benefit disadvantaged communities by upgrading existing facilities and, where warranted, establishing new facilities that reduce GHG emissions; result in air and water quality improvements; and create jobs.

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Wolf-Livestock Compensation Grant Program

Open Agriculture; Animal Services; Environment & Water US

United States

The purpose of the grant is to help mitigate the impact of wolves on livestock producers in California. The Wolf-Livestock Compensation Grant Program has established three primary areas of need and compensation; direct livestock loss from wolf depredation, the use nonlethal deterrent tools, and the compensation for indirect loss or affects from wolves on livestock. The Wolf-Livestock Compensation Grant Program has three “prongs”, or potential grant opportunities, for eligible applicants: direct loss compensation, nonlethal deterrent methods support, and indirect loss compensation. This grant opportunity involves the first prong, direct loss compensation, in which producers can be compensated for direct livestock loss (death, injury) due to confirmed or probable wolf depredation. Wolf de...

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Baldwin Hills & Urban Watersheds Conservancy (BH UWC) Proposition 4: Community and Climate Resilience Grant Program

Open Disadvantaged Communities; Environment & Water; Parks & Recreation US

United States

The Baldwin Hills & Urban Watersheds Conservancy Proposition 4: Community and Climate Resilience Grant Program aim to award projects and programs that protect biodiversity; restore watershed function; and expand equitable access to parks and open space. The Climate Bond, Proposition 4: the Safe Drinking Water, Wildfire Prevention, Drought Preparedness, and Clean Air Bond Act of 2024 (Senate Bill (SB) 867), was approved by voters in November 2024. It added Division 50 (Commencing with Section 80000) to the Public Resources Code (PRC). Section 93020 (a)(1) of Chapter 6: Protect Biodiversity and Accelerating Nature-Based Climate Solutions authorizes the Legislature to appropriate $48,000,000 (forty-eight million dollars) to the Baldwin Hills & Urban Watersheds Conservancy (Conservancy) for...

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Proposition 68 Fish and Wildlife Improvement Grant Opportunities – (Including Severely Disadvantaged Communities)

Open Environment & Water US

United States

To restore and protect rivers and streams in support of fisheries and wildlife. The California Drought, Water, Parks, Climate, Coastal Protection, and Outdoor Access for All Act of 2018 (Proposition 68) provides funding to award grants to projects that improve a community’s ability to adapt to the unavoidable impacts of climate change; improve and protect coastal and rural economies, agricultural viability, wildlife corridors, or habitat; develop future recreational opportunities; or enhance drought tolerance, landscape resilience, and water retention. Project priorities include, but are not limited to, reconnection of rivers with their floodplains, riparian and side-channel habitat restoration, and restoration and protection of upper watershed forests and meadow systems that are import...

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Land Acquisition 2025

Open Environment & Water US

United States

The WCB acquires real property or rights in real property on behalf of the California Department of Fish and Wildlife (CDFW) and can also grant funds to other governmental entities or nonprofit organizations to acquire real property or rights in real property. All acquisitions are made on a "willing seller" basis pursuant to a fair market value appraisal as approved by the Department of General Services (DGS). The acquisition activities are carried out in conjunction with the CDFW, which generally entails CDFW evaluating the biological values of property through development of a Full WCB Real Property Acquisition Application. Once these evaluations are completed, they are submitted to CDFW’s Director for review and approval and then sent to the WCB with a recommendation to fund. Typical...

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San Joaquin River Conservancy

Open Environment & Water; Parks & Recreation US

United States

The purpose of the SJRC is to create the San Joaquin River Parkway (Parkway) to preserve and enhance the river’s extraordinary biological diversity, protect its valued cultural and natural resources, and provide educational and recreational opportunities for local communities and visitors. Activities eligible for the Program include: Property acquisition for resources conservation and public access Implementation of habitat enhancement and restoration of public or private lands All projects must be approved by both the San Joaquin River Conservancy Board and the Wildlife Conservation Board to receive a grant award.

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Cleanup Loans and Environmental Assistance to Neighborhoods (CLEAN) Program

Open Environment & Water US

United States Up to $2,500,000

Department of Toxic Substances Control's (DTSC) CLEAN Program helps developers, businesses, schools, and local governments accelerate the pace of assessment, cleanup, and redevelopment at abandoned and underutilized urban brownfield sites in California. DTSC's CLEAN Loan Program provides loans for property owners, developers, community groups, and local governments to investigate, cleanup and redevelop abandoned and underutilized urban properties. Loan used for the cleanup or removal of hazardous materials where redevelopment is likely to have a beneficial impact on the property values, economic viability, and quality of life of a community. Per Health and Safety Code § 80370, applicant must not have any: Felony convictions or misdemeanors involving the regulation of hazardous materials...

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OIA Maintenance Assistance Program 2026

Open US OIA-MAP-2026

United States

The Office of Insular Affairs (OIA) is seeking proposals for its Maintenance Assistance Program (MAP), which offers grant funding to support, develop, improve and institutionalize infrastructure maintenance practices in the insular areas. Funds can also be used for critical repairs to infrastructure.

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Prop 4 – Nature-Based Solutions (NBS)

Open Disadvantaged Communities; Environment & Water; Parks & Recreation US

United States

The purposes of Prop 4 include watershed improvement, wildfire resilience, chaparral and forest restoration, and workforce development that addresses needs related to this subdivision and to reduce the risks of climate change impacts upon communities, fish and wildlife, and natural resources, and increase public access. Multi-benefit projects that advance a number of goals, including but not limited to: • Conserving land • Protecting resources • Reducing flood and fire risk • Improving water quality • Protecting and enhancing wildlife habitats and corridors • Completing the San Diego River Trail • Providing public access for the enjoyment of the San Diego River Park and open space, trails, campgrounds and park facilities • Removing invasive plant species from the watershed • Increasing ...

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Proposition 68 Southern Steelhead Grant Program

Open Environment & Water US

United States

To restore Southern California Steelhead habitat consistent with the Department of Fish and Wildlife’s Steelhead Restoration and Management Plan and the National Marine Fisheries Service’s Southern California Steelhead Recovery Plan. The California Drought, Water, Parks, Climate, Coastal Protection, and Outdoor Access for All Act of 2018 (Proposition 68) provides funding to award grants to projects that improve a community’s ability to adapt to the unavoidable impacts of climate change; improve and protect coastal and rural economies, agricultural viability, wildlife corridors, or habitat; develop future recreational opportunities; or enhance drought tolerance, landscape resilience, and water retention. Projects that remove significant barriers to steelhead migration and include other h...

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Earth Mapping Resources Initiative (Earth MRI) Mine Waste Cooperative Agreements FY2026

Open US G26AS00102

United States

Proposals are being accepted by the Mineral Resources Program (MRP), Earth Mapping Resources Initiative (Earth MRI) for State geological survey Mine Waste activities. Funds are made available to participating State geological surveys for activities focusing on mine waste inventory and characterization data compilation and acquisition, sampling and mapping efforts in support of ongoing Earth MRI efforts. State geological surveys may also apply for travel funds to the annual 2026 Earth MRI workshop. In FY 2026, approximately $5M is available for allocation to USGS Mine Waste cooperative agreements through a competitive proposal process. All MRP funds must be obligated by Sep 30, 2026.

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Stream Flow Enhancement

Open Environment & Water US

United States

The Stream Flow Enhancement Program (SFEP) funds projects that enhance stream flows across the state of California. The SFEP defines enhanced streamflow to mean: a change in the amount, timing, and/or quality of water flowing down a stream, or a portion of a stream, to benefit fish and wildlife. The following are funding priorities for the stream flow enhancement projects:• Implementation projects resulting in measurable increases in stream flow• Acquisition projects resulting in permanent or long-term in-stream flow dedications• Projects that are focused on a watershed or regional approach• Projects in critical watersheds for salmonids• Projects that help to complete previously funded projects• Projects that evaluate stream flow conditions and stream responses to other stream flow enha...

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The California Drought, Water, Parks, Climate, Coastal Protection and Outdoor Access for All Act of 2018 (Proposition 68) SMMC Grant Program – Prop 68 River San Fernando Valley – Community Access

Open Environment & Water US

United States

Projects which facilitate the protection and restoration of wildlife, habitat and historical/archaeological resources, including habitat restoration projects in urban rural areas. This program Supports The California Drought, Water, Parks, Climate, Coastal Protection and Outdoor Access for All Act of 2018 is codified as Division 45 (commencing with section 80000) and sections 5096.611 and 75089.5 of the public resources code and section 79772.5 of the water code. Prop 68 authorizes $4 billion in general obligation to finance a drought, water, parks, climate, coastal protection and outdoor access for all program. The Santa Monica Mountains conservancy's ("Conservancy") Proposition 68 Grant Program Guidelines ("Guidelines") Specifically pertain to grants funded by proposition 68 and admin...

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Mill Creek Natural Resource Training and Education

Open US W912EF-26-2-A001

United States

The U.S. Army Corps of Engineers (USACE) is seeking organizations to enter into a cooperative agreement for outdoor education and training, flood control infrastructure maintenance, effective environmental and recreational resource management, enhanced public engagement, and training/education opportunities – along with other related services.USACE is particularly interested in organizations that offer challenging education and job-training experiences for young adults, and support for formal post-high school education. This agreement aims to provide effective resource management, enhance public engagement, and offer training and education, all while promoting responsible stewardship of public lands and resources and developing future water and natural resource professionals.Statutory A...

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Prop 4 – Wildfire and Forest Resilience

Open Environment & Water US

United States

Protect communities, improve forest health, enhance early detection and response and support long-term capital infrastructure projects. Hazardous fuels reduction, wildfire prevention planning and wildfire prevention education.

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Proposition 4 Wildfire

Open Environment & Water US

United States

To improve local fire prevention capacity, enhance forest health and resilience, or reduce the risk of wildfire spreading from wildlands into populated areas. Projects funded under the Fire category must fall within Chapter 3 of Proposition 4, focused on Wildfire and Forest Resilience. To qualify, projects must meet Section 91520, and include at least one purpose listed in Section 91520(j). Eligible activities may improve local fire prevention capacity, enhance forest health and resilience, or reduce the risk of wildfire spreading from wildlands into populated areas. In addition, each project must address at least one of the following: watershed improvement, wildfire resilience, chaparral or forest restoration, or workforce development. Proposition 4 Wildfire

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Investigating Site Contamination Program (ISCP)

Open Environment & Water US

United States $1 - $100,000

Department of Toxic Substances Control's (DTSC) ISCP offers loans to eligible applicants, including governmental entities, private businesses, individuals, and non-profit organizations, to help finance environmental site assessments. DTSC's ISCP Loan Program provides loans for property owners, developers, community groups, and local governments to conduct preliminary endangerment assessment of underutilized urban properties. Loan used to conduct preliminary endangerment assessments. If redevelopment of property is determined not to be economically feasible, up to 75 percent of the loan amount can be waived.

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Region 08 Fiscal Year 2025 Wetland Program Development Grants

Open US EPA-REG08-WPDG-25

United States

Wetland Program Development Grants (WPDGs) assist state, Tribal, territory (Insular Areas), local government agencies, and interstate or intertribal entities in developing or refining state, Tribal, territory or local programs that protect, manage and restore wetlands. The goals of the EPA’s wetland program include increasing the quantity and quality of wetlands in the U.S. by conserving and restoring wetland acreage and improving wetland condition. In pursuing these goals, the EPA seeks to develop the capacity of all levels of government to develop and/or refine effective, comprehensive programs for wetland protection and management. This is done using the Core Elements of a Wetlands Program, the Wetlands Program Core Elements Framework and for states and Tribes the development of Wetl...

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FY 2026 Notice of Funding Opportunity for Small Shipyard Grants

Open US DTMASSG26

United States

This notice announces the intention of the Maritime Administration to provide grants to small shipyards. Under the Small Shipyard Grant Program, there is currently $35,000,000 available for grants for capital and related improvements to qualified shipyard facilities that will be effective in fostering efficiency, competitive operations, and quality ship construction, repair, and reconfiguration. Potential applicants are advised that it is expected, based on experience, that the number of applications will far exceed the funds available and that only a small percentage of applicants will be funded. Applications (SF-424 and the Addendum) will be accepted online through Grants.gov by 12:00:00 pm (Noon Eastern Time) on the closing date (May 11, 2026). See full text under Related Documents T...

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Department of Defense and State Memorandum of Agreement (DSMOA)

Open Environment & Water US

United States

To accomplish services sought by the Department of Defense (DoD) to provide expedited review and other related services to execute the Defense Environmental Restoration Program (DERP) at identified DoD installations. To provide regulatory oversight activities and services to implement its responsibilities during the environmental investigation and cleanup activities associated with the facilitation of environmentally sound reuse of military bases in California.

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Program Year 2026 National Farmworker Jobs Program (NFJP) Housing Services

Open US TEGL-ETA-PY26-MH

United States

To provide instructions to National Farmworker Jobs Program (NFJP) Housing Services grantees for the submission of required documents for Program Year (PY) 2026 allotments and performance negotiations.

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Native American Preparedness Tribal Grant

Open Disaster Prevention & Relief; Environment & Water US

United States

The Tribal Preparedness Grant is part of the Office of Spill Prevention and Response Program and supports California Native American tribes in preparing for and enhancing emergency preparedness, response, and recovery efforts while protecting their ancestral lands and communities from oil spills.

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Frequently Asked Questions

Who issues water tenders most frequently?

Municipal water utilities, ministries of water and sanitation, river-basin authorities, and donor-funded PMUs under World Bank, AfDB and ADB projects.

Are WASH grants available to private companies?

Yes — innovation grants from Grand Challenges Canada, USAID DIV, and IFC TechEmerge support private-sector WASH solutions, though most grant flows still run through NGOs and government.

Water & Sanitation Tenders & Grants

Who this is for

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