42 Water quality control services, scientific and industrial research services relating to environmental protection, laboratory research services in the fields of water and water treatment and purification, services of chemical analysis, chemical research, professional consultancy, study of technical projects, engineering work and engineer works (not for construction) in the fields of water and water treatment, surveying in the field of water and effluent treatment, laboratory research services in the fields of industrial, household, hospital and special waste,refuse, sludge, ash, industrial, household, hospital and special waste recovery, bacteriology research services, surveying in the field of industrial, household, hospital and special waste, sludge and ash from plants, both urban and industrial, computer programming, computer services, namely, development, design and updating of computer software and software packages, technical consulting and advice in the field of computing, computer rental, design of computer and telecommunication systems, scientific and industrial research services for developing and evaluating the performance of physical-chemical water treatment processes and products; scientific and technical studies for developing and evaluating the operation performance of installations for treating drinking water or industrial process water, for treating household or industrial wastewater, as well as for treating physico-chemical or biological fluids and sludges; technical audits, engineering advise and work relating to these processes and equipment and to all other fluid treatments, including in the field of industrial processes; research center services in the fields of collection, transport, treatment, cleaning, storage, sanitation, recovery and disposal of waste and refuse; expert appraisals in the field of waste and refuse; scientific and industrial research relating to environmental protection for the collection, transport, treatment, cleaning, storage and recovery of waste and refuse; engineering, engineering project study, engineering work services in the fields of design and construction of industrial and urban centers and units for waste and refuse collection, sorting, storage, treatment, recovery and disposal; air, water and sound pollution prevention services; consulting regarding environmental protection, urban planning, industrialization and natural resource promotion, information relating to the environment, study services (surveying) with regard to economic, social and environmental implications, operations relating to urban planning, industrialization and use or promotion of natural resources, particularly water; soil tests, agricultural, horticultural, wine growing, arboricultural and silvicultural engineering; quality control of air, water, soil; surveying in the field of industrial information systems (automatism, checking, control and centralized technical management, decision-making systems, operating data management systems); technical project studies, analyses, evaluations, estimates, research, information and advice in the fields of technology, maritime, offshore, port, energy, sustainable development, environment, climate, weather, industrial and household waste management, water, flood control, hydrogeology, development of wet areas, public transport, telecommunications, civil engineering and urban engineering; certification and compliance of said services with the quality assurance terms; management of Internet sites in the field of care services waste management