Total Trihalomethanes TTHM

Meaning, Term, and Glossary Definition - What is Total Trihalomethanes TTHM?

Total Trihalomethanes (TTHM) are the total amount of trihalomethanes allowed by the EPA. The EPA has a maximum allowable annual average of 80 parts per billion for TTHMs. Previous to December 2001, the allowed level was 100 parts per billion. The standard is effective for small surface water and all ground water systems.

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Related glossary terms:

Total Pressure   Total Dissolved Phosphorous   Total Dissolved Solids TDS   Total Petroleum Hydrocarbons TPH   Total Recovered Petroleum Hydrocarbon   Total Suspended Particles TSP   Total Suspended Solids TSS   Trihalomethanes THM   
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