“Dias Drainage has been serving Northern California with quality drainage systems for more than 30 years! Our reputation is built on superior water solutions, excellent service, and competitive pricing. Clientele consists of general contractors, business owners, and homeowners. Dias Drainage offers a variety of creative solutions to draining and protecting your property against water damage and flooding. Some of our specialized solutions include: French Drains, Catch Basins, Sump Pumps, Channel Drains, Storm Drains and Retaining Walls and more!”