Water Quality Crossword

Organisms or components or organisms that are used to access the health of the water system
any foreign components in a substance, for example water
measure of water quality indicating free oxygen dissolved in water
a chemical material or solution which can be used to show (usually by a change in color)
small, spineless creatures that are visible with the unaided eye
nitrogen compounds used from growth in plants and algae
pollution that comes from many places or sources that is not easily identified
the measure of how acidic or basic a substance
rating of how adicic or basic a substance is.
pollution that can be traced to a specific source such as oil that spills from a pipeline
any substance or form of energy that can cause harm to the environment and make it unfit for use by organisms
a flat white disc lowered into the water by a rope until it is just barely visible
responsibility for conserving and restoring the earth's resource for future generations
a measure of the clarity of water (how clear it is)
water that runs into drains that may contain sewage and chamicals from homes and businesses or pollutants from industry
used to describe the health of a water system