The spraying or spreading of biosolids onto the land surface, the injection of biosolids below the land surface or the incorporation of biosolids into the soil for beneficial use so that the biosolids can either condition the soil or fertilize crops or vegetation grown in the soil.

ACC - Alternative Compliance Criteria Alternative criteria that can be used to achieve either monthly or annual compliance with the enhanced coagulation requirements of the DBP Rule.

A condition in which a substance yields H+ ions when it dissociates in water, resulting in a lowering of pH.

The concentration of H+ ions in a solution, measured as pH.

Action Level (AL)

A coagulant aid that is created on-site by neutralizing sodium silicate.

A biological treatment process in which a mixture of wastewater and activated sludge is agitated and aerated. The activated sludge is subsequently separated from the treated wastewater by settlement and recycled or wasted. Although the configuration of activated sludge plants vary, the activated sludge process includes one or more aerated reactors [..]

Adverse effect on human health as a result of short-term exposure. Acute health effects occur within hours or days of the time that a person consumes a contaminant.

This refers to the requirement that any PWS, which collects fewer than five routine coliform samples per month, must collect at least five routine coliform samples per month, must collect at least five routine samples the very next month following a coliform-positive test result. This requirement can be reduced to no less than one sample the next m [..]

The accumulation of one material on the surface of another material through physical bonds