Improper sanitation practices can lead to diseases by allowing bacteria and viruses to spread. Citizens should work with local governments to address issues like open drains by insisting they be covered, and spread awareness about conserving water. A scientist was able to singlehandedly clean a polluted wetland using new water treatment technology after seeing its deteriorated state. Certain items like food, oils, and chemicals should be disposed of in dustbins rather than drains to prevent clogs and allow for proper degradation. Open defecation and untreated human waste contaminate water sources and soil, spreading disease.