Knapp Elementary School (Michigan City, Ind.) fourth graders tested water samples with Michigan City Sanitary District Chemist Kathleen Janatik during a field trip to Striebel Pond Flood Control Facility.

Girl Scouts from the Howland Service Unit in Trumbull County, Ohio conducted water quality monitoring in a tributary of the Mosquito Creek Reservoir.

Volunteer monitoring teams coordinated by the U.S. EPA, the City of Santa Rosa (Calif.), the North Coast Regional Water Quality Control Board, and the Russian Riverkeeper sampled five areas along Colgan Creek — a creek with a history of serious pollution from urban runoff — in Santa Rosa. 

More than 40 of Bobbye Hager's fifth grade students from Kedron Elementary School gathered at Line Creek in Peachtree City, Ga. for water monitoring. The students were joined by siblings, parents, and the assistant principal.

U.S. EPA Assistant Administrator of Water Ben Grumbles (left), WEF Executive Director Bill Bertera, and WEF Managing Director of Public Education Linda Kelly kick off WWMD in Alexandria, Va.

Advanced placement chemistry teacher Kathy Kitzmann recently led two students through a monitoring exercise after school at Mercy High School in Farmington Hills, Mich.

Students celebrate WWMD at the Potomac River in Alexandria, Va.

A group of students organized by the Global Village of Beijing analyzed water samples at a river near Beijing.

U.S. Congressman Jim Moran (D-Va.) speaks at WWMD in Alexandria, Va.

WEF staff assist students in testing their river water samples at WWMD in Alexandria, Va.

Students collect samples of water from the Potomac River at WWMD in Alexandria, Va.

Knapp Elementary School (Michigan City, Ind.) fourth graders test samples of water as part of WWMD.

Students at WWMD in Alexandria, Va. examine critters from the Potomac River.