We provide construction companies and municipalities with flooding and dewatering solutions. Our unique internal baffle helps stabilize our system, ensuring the safety and performance of our entire product line. Our continued goal is to provide the safest, most effective, temporary dam on the market. We strive to be your cofferdam resource! We offer multiple, environmentally friendly hydrological solutions tailored around your specific needs. Our unique temporary dam is a safe and effective dewatering tool. HSI Services is an ISO 9001 Certified company so you can count on getting only the best quality cofferdams in the industry!