Drain and sewer cleaning and rootering services; Installation and replacement service for water heaters; [ Installation of solar energy systems and alternative energy products for residential and commercial use; ] Installation, maintenance and repair of water filtration, softening, reverse osmosis, chemical feed pump, specialty cartridge and housing, water, and drain and sewer systems; Land development services, namely, planning and laying out plumbing and sewer systems for residential and/or commercial communities; Comprehensive plumbing services; Repair or maintenance of gas water heaters