Crystal Construction is a well-equipped and certified septic system design and installation company that has been serving Mankato and surrounding areas for over 25 years. Our comprehensive range of services include septic system installation, repair, and landscaping, with a focus on quality, expertise, and customer satisfaction. We offer free flexible site evaluations, free estimates, and on-site water waste treatment designs to provide the best septic system for each customer's needs and desires. Our team of professionals is well-trained, certified, and experienced in septic system installation, repair, and maintenance, ensuring that each job is done right the first time.