Maintenance and repair of pipe networks; renovation of aqueducts, water supply conduits, water collecting conduits; construction of drainage installations, sewerage installations, river pollution control installations and high-water protection installations; renovation of water and sewerage pumping plants; construction and construction planning of plants for the treatment of sewage, industrial sewage and rain water; procurement of water, namely, surface and underground water resource harnessing and management, water well drilling and water resource allocation;installation and maintenance of irrigation devices and networks; construction of buildings; plumbing; rental of civil work and water well drilling tools and construction equipment; maintenance and cleaning of buildings and parts of buildings and cleaning and trash collection on grounds of building; pest control; maintenance and repair of equipment for use in the treatment, purification, sterilization and regeneration of all fluids in treatment plants; sewage and industrial sewage collection services; collection and evacuation of sludge of sewerage plants

Telecommunications services, namely, personal communication services, electronic store-and-forward messaging and electronic and voice mail services; providing multiple-user access to a global computer information network; consultation in the field of information transmission, communication equipment, radio messaging equipment and cellular telephones network

Water supply and distribution services; public utility services in the nature of electricity distribution; transport of goods by pipelines, boat, rail and air, packaging articles for transportation, warehousing services and warehouse storage

Water treatment; water treatment by the addition of reagents in particular to waters for human and animal consumption and water for industrial use

Engineering services; technical consulting in the field of engineering and surveying; geological prospecting; material testing, laboratory research in the field of treatment, filtration, purification, sterilization and regeneration of all fluids, in particular water used as drinking water, industrial water, boiler feed water, pool water, waste water, sewage water, for implementing and adapting the said technologies to each specific case; research in the field of water supply, water resources, water purification and dumping into nature, water and residual liquid analysis; computer programming for others, technical consulting services in the field water treatment and computer equipment related to water treatment and software related to water treatment; technical support services, namely, troubleshooting of computer hardware and software problems via telephone; computer software design services for others; and construction drafting services for water treatment plants