World Water Monitoring Day is a worldwide opportunity to positively impact the health of rivers, lakes, estuaries and other waterbodies. On 18 October 2004 volunteer monitoring groups, water quality agencies, students, and the general public are invited to test four key indicators of water quality: temperature, pH, dissolved oxygen, and turbidity. To participate, choose any lake, stream, bay, or other waterbody where you can safely monitor. Register your site beginning 18 July each year by clicking on Register & Report to enter the World Water Monitoring Day registration database. Visit your site anytime from 18 September through 18 October to test the water. Results may be entered anytime from 18 September through 18 December for inclusion in the annual World Water Monitoring Day summary reports. America's Clean Water Foundation (ACWF) and the International Water Association (IWA) coordinate World Water Monitoring Day.
