Here, the POTW removes harmful organisms and other contaminants from the sewage so it can be discharged safely into the receiving stream.

It is effective at removing fouling organisms from salmon cages and oyster trays.

The 8-inch-by-10-inch filter was then put through a series of steps to remove all bacteria and other organisms so they could be subjected to DNA sequencing.

Pre-emergent pesticide application, in conventional agriculture, attempts to reduce competitive pressure on newly germinated plants by removing undesirable organisms and maximizing the amount of water, soil nutrients, and sunlight available for the crop.

Breathing in these irritants may make the respiratory system less effective at removing organisms from the lower airways.

Although it would remove most disease-bearing organisms from the city water, it would miss some: The outbreak of lethal cryptosporidium in Milwaukee this spring originated in filtered water.

All surface water in the park should be filtered before drinking to remove harmful organisms.

Smoking or breathing secondhand smoke makes the respiratory system less effective at removing organisms from the lower airways.

Our purpose is to remove alien organisms that have illegally been introduced into the planetary environment.

Maintenance might include repairing damage caused by dry rot or cannon shot, tarring the exterior to reduce leakage, or removing biofouling organisms such as barnacles to increase the ship's speed.