Griffin Dewatering is the only coast-to-coast dewatering company in the U.S. with 8 locations to serve you nationwide. With over 75 years of experience Griffin is a Full-Service Provider of Construction Dewatering, Groundwater Treatment, Slurry Trenches, Drilling Services, and Pump Equipment Manufacturing. Design, Modeling, Consulting for Construction Dewatering, Remediation, and Pumping Construction Services. Remediation Services from Design to installation through completion.