ADECAGUA, with headquarters in Barcelona, is an association of water industry professionals whose basic objectives are: improving the transmission of technical know-how in the residual urban and industrial water processing; promoting adequate environmental management of water resources; advocating for governmental legislation to protect water quality in Spain; exchanging information and experiences between members and stakeholders; and promoting professionalism among water industry workers.

AquaSendas is a not-for-profit community organization dedicated to creating awareness and including citizenry in the conservation of Chilean aquatic ecosystems. The COPAS Center is devoted to advanced basic scientific research on the circulation, biogeochemical cycling, ecology and paleoceanography of the Eastern South Pacific Ocean. Both institutions have joined efforts to develop a nationwide network of public schools as stewards of local waterbodies and to strengthen k-12 water curricula.

Headquartered in Denver, Colo., employee-owned CH2M HILL is a global leader in engineering, procurement, construction and operations for public and private clients. With more than $5.8 billion in revenue, CH2M HILL is an industry-leading program management, construction management and design firm, as ranked by Engineering News-Record (2008). The firm’s work is concentrated in the areas of transportation, water, energy, environment and industrial facilities. The firm has long been recognized as a most-admired company and leading employer by business media and professional associations worldwide. CH2M HILL has supported World Water Monitoring Day since 2003 as one of the firm’s Community Partners Programs.

Hosted by NEEF, the National Environmental Education Foundation, EE Week is the nation's largest celebration of environmental education held each year the week before Earth Day and inspires environmental learning and stewardship among K-12 students. The 2013 theme, Greening STEM: Taking Technology Outdoors, will explore how technology can enhance environmental learning both inside and outside the classroom.

Environment Online (ENO) is a global virtual school and network for sustainable development where schools around the world study environmental themes and share the results at local level and globally on the website. This free programme for schools was launched in 2000 and has now spread to over 100 countries and is administered by the city of Joensuu, Finland. ENO works in co-operation with UNEP and the university of Joensuu, as well as many international organisations and networks.

The United States Environmental Protection Agency's (USEPA) mission is to protect human health and to safeguard the natural environment - air, water, and land - upon which life depends. For over 30 years, the USEPA has been working for a cleaner, healthier environment for the American people. USEPA provides leadership in the nation's environmental science, research, education and assessment efforts by working closely with other federal agencies, state and local governments, and Indian tribes to develop and enforce regulations under existing environmental laws.

Girl Scouts of the USA is the world’s preeminent organization dedicated solely to girls—all girls—where, in an accepting and nurturing environment, girls build character and skills for success in the real world. In partnership with committed adult volunteers, girls develop qualities that will serve them all their lives, like leadership, strong values, social conscience, and conviction about their own potential and self-worth. Founded in 1912 by Juliette Gordon Low, Girl Scouts' membership has grown from 18 members in Savannah, Georgia, to 3.7 million members throughout the United States, including U.S. territories, and in more than 90 countries through USA Girl Scouts Overseas.

The "Girl Scouts" name, mark and all associated trademarks and logotypes, including the "Trefoil Design," are owned by Girl Scouts of the USA. Used under authority of GSUSA.

LaMotte has been a committed leader in providing quality equipment and guidance for water analysis since 1919. Today LaMotte produces a broad line of portable test equipment and custom test kit services. LaMotte is a vital partner in World Water Monitoring Day, helping WEF manufacture and distribute the test kits used throughout the world each year.

National Public Lands Day (NPLD) is the largest hands-on volunteer effort to improve and enhance the public lands Americans enjoy. In 2008, 120,000 volunteers built trails and bridges, removed trash and invasive plants planted over 1.6 million trees. The goals of NPLD include: educating Americans about critical environmental and natural resources issues and the need for shared stewardship of these valued, irreplaceable lands; building partnerships between the public sector and the local community based upon mutual interests in the enhancement and restoration of America's public lands; and improving public lands for outdoor recreation, with volunteers assisting land managers in hands-on work. 

With support from the Puerto Rico Environmental Quality Board, the Puerto Rico Water Environment Association, and the Environmental Protection Agency, the San Juan Bay Estuary Program is the proud host of the Día de Monitoreo de Calidad de Agua across the island in April each year.  First celebrated in 2009, the event was created to raise awareness and promote the importance of conserving Puerto Rico’s water resources by engaging a large number of people in monitoring activities.  In 2011 the organization expects to coordinate monitoring by approximately 1,500 people at a total of 50 sites.

 The União dos Escoteiros do Brasil (the national scouting association of Brazil) is supporting and promoting World Water Monitoring Challenge through its Rede Ambiental Escoteira, a network of scouts and scout leaders passionate about the environment. Approximately 300 local scout associations participated in the UEB’s environmental program in 2012, approximately 15,000 scouts. WWMC was introduced as a project and will continue as a highlight for 2013, which will feature a ‘water’ theme.
 

Water New Zealand Water New Zealand is a membership organization with a focus on promoting and enabling the sustainable management and development of the water environment, and is supporting World Water Monitoring Day by promoting the initiative through its membership and networks within New Zealand’s water industry.