The debate of the efficacy of septic tank additives rages on. The U.S. Environmental Protection Agency’s most recent study on chemical or biological additives in septic tanks was 15 years ago. The results? The EPA neither recommends nor prohibits the use of additives — of biological composition — citing inconclusive evidence in widespread usage.Some professionals argue that biological additives may have some — minor — benefits and could be useful in systems with high-sodium drinking water or in areas with hard water supplies. Chemical additives, however, could have possible adverse effects on groundwater quality, system components and soil structure.Taking sides“Bioremediation
