Research Grants/Fellowships/SBIR

Limestone-Based Material for Arsenic Removal From Drinking Water

EPA Contract Number: 68D02093
Title: Limestone-Based Material for Arsenic Removal From Drinking Water
Investigators: Williamson, Terrence E.
Small Business: HydroTech Engineering
EPA Contact: Manager, SBIR Program
Phase: I
Project Period: October 1, 2002 through July 31, 2003
Project Amount: $100,000
RFA: Small Business Innovation Research (SBIR) - Phase I (2002) RFA Text |  Recipients Lists
Research Category: Water and Watersheds , SBIR - Water and Wastewater , Small Business Innovation Research (SBIR)


Arsenic contamination of groundwater is a problem facing many areas of the United States and the rest of the world. This problem has been highlighted by the U.S. Environmental Protection Agency?s decision to mandate reductions in the acceptable level of arsenic in drinking water from 50 ppb to 10 ppb by the year 2006. In South Dakota alone, 18.6 percent of small and rural water supply systems will not be in compliance with this mandate. Current technologies do not cost-effectively treat these small drinking water systems. Urgent action is needed to address this problem. HydroTech Engineering proposes a method to resolve this problem with a unique and potentially cost-effective methodology to remove arsenic from drinking water. Recent advances by HydroTech Engineering have shown the feasibility of this procedure and the principal scientists involved are in the process of patenting the technology. HydroTech Engineering has outlined a comprehensive Phase I project for the reduction of arsenic in drinking water using a limestone-based material, with testing and evaluation of removal characteristics according to established procedures. This project could not only solve the arsenic contamination problem facing rural South Dakota and other areas of the United States, but also could represent a billion-dollar worldwide industry.

Supplemental Keywords:

small business, SBIR, EPA, drinking water, arsenic, water supply systems, limestone, contamination., RFA, Scientific Discipline, Geographic Area, Water, Environmental Chemistry, Arsenic, State, Analytical Chemistry, Environmental Monitoring, Drinking Water, Environmental Engineering, monitoring, public water systems, Safe Drinking Water, South Dakota, risk management, chemical contaminants, community water system, arsenic removal, treatment, arsenic exposure, drinking water contaminants, water treatment, drinking water treatment, contaminant removal, limestone-based material, drinking water system, groundwater

Progress and Final Reports:
Final Report

SBIR Phase II:

Limestone-Based Material for Arsenic Removal From Drinking Water  | Final Report