In construction dewatering, the recovered groundwater is often times contaminated and requires pre-filtration prior to discharge. TSGS will design a site-specific temporary or permanent treatment system based on the levels of contamination and estimated flow rate to meet the state and/or local discharge standards. A typical treatment is comprised of settling tanks, bag filters and carbon to treat a wide variety of contaminants, including total suspended solids (TSS), metals and petroleum products (VOCs and SVOCs). We also provide other treatment components, such as clarifiers, oil/water separators, resins, air strippers, etc. depending on the contaminants identified in the groundwater.