Have the students make a poster to raise awareness about the issue of sewage. Split them into groups of 2 or 3 and have them pick three pieces of information that really stood out for them and that they felt other people should be aware of.
Water Pollution Chart for Lesson 6 of Operation Water Pollution. Community name, Population, Water Source, Pollutants visible in sample, Possible pollutants in sample, TDS before adding bleach, pH before adding bleach...