Waste management - Water:
Fertiliser: Nitrates from fertilisers are washed easily into bodies of water
Fertiliser: Apply them in the proper amount, at the right time of year
Sewage: Untreated sewage that is washed into waterways causes high levels of nitrates in water, stimulating the growth of algae which increases the competition of light, unbalancing the underwater food chains
Sewage: Improve waste cleaning system
Toxic chemicals: Can be washed into waterways and can have the same bioaccumulation effect on aquatic life
Toxic chemicals: Reduce the use of pesticides