42 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