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Pollution Puzzle Two

Across
Treated sewage must have this step done to kill pathogens
The solid waste we produce must be removed so that eutrophication does not occur
This treatment removes solid organic waste from sewage
The third advanced step of treatment that removes toxins and nutrients
The most common type of nutrient pollution
This type of water pollution is a result of our dependence on fossil fuels
Soil particles contaminate water, blocking sunlight
A common source of toxic pollution in lakes, rivers, and streams
This national law has been cleaning up water to make them fish-able and swimmable since 1970.
Starved microbes are percolated through a settling tank so that organic matter can be consumed
A permitted release of waste into water
To use up
Water pollution that is introduced from waterways by run-off, not pipes
This damaging pollution from residual heat can affect the reproduction health of aquatic organisms
Down
Sewage from your house
Natural phenomenon that introduces sulfur dioxide into the air, causing acid rain, and sooty skies
How water pollution enters our under ground drinking water
Water pollution from piped sewage or chemicals. Effluent.
Harmful microorganisms that contaminate water supply
This urban pollution can disorient night time migrations and make it difficult for us to sleep and see stars
Introduction of nutrients to water causing algal bloom and then fish die off due to lack of oxygen
These sewers allow sewage and runoff from streets to mix
Disease causing organism. often transmitted by water
Water that is dark and does not transmit light
The type of pollution introduced by animal waste not water. Not pathogen waste.