SONINGEO

SONINGEO, S.L. is a multidisciplinary engineering and testing laboratory founded in 2001 and headquartered in Maliaño, Cantabria, in northern Spain. The company provides integrated services spanning geotechnics, geophysics, environmental analysis, water quality, building and civil works quality control, and food safety to a broad base of engineering firms, public administrations, and private companies. Recognized as a leader in the geotechnics sector across Cantabria and the wider northern Spain region, SONINGEO combines field investigation, in-situ testing, and accredited laboratory analysis under one roof, offering clients a single point of contact for complex, multidisciplinary ground and environmental studies.

The company's geotechnical department (Geotecnia y Sondeos) is its flagship service line, supporting geological and geotechnical characterization of terrain for infrastructure projects, residential and commercial developments, and civil engineering works. Services include rotary and inclined drilling campaigns (0°–90°), undisturbed sampling, standard penetration tests (SPT), permeability testing via the Lefranc and Lugeon methods, and pressuremeter testing. The geotechnical laboratory conducts soil mechanics testing—including grain size analysis, Atterberg limits, compaction testing (Proctor standard and modified), California bearing ratio (CBR), oedometer consolidation, triaxial shear strength, and unconfined compressive strength—as well as chemical characterization of soils. SONINGEO is accredited by the Government of Cantabria (Gobierno de Cantabria) for quality control in construction, covering the GTL (geotechnical laboratory testing) and GTC (drilling, sampling and in-situ geotechnical survey) areas as defined by the Spanish Ministry of Public Works, Housing and Urbanism.

SONINGEO's geophysics division offers a comprehensive suite of non-invasive surface prospecting methods for subsurface characterization. Techniques include seismic refraction and reflection surveys, passive seismics (ambient noise and microtremor analysis), ground-penetrating radar (georadar), vertical electrical soundings (SEV), resistivity profiling (electrical trenches), 2D electrical resistivity tomography (ERT), 3D electrical tomography, and marine electrical tomography. These methods are applied to site investigations, cavity and void detection, hydrogeological studies, and mapping of lithological contacts and fault zones, providing clients with high-resolution subsurface images without the need for intrusive drilling across complex or sensitive terrains.

The water and environmental laboratory (Laboratorio de Aguas y Medioambiente) provides physical-chemical and microbiological analysis of drinking water (agua potable), wastewater (aguas residuales) and industrial discharges, and continental waters including groundwater and surface water bodies. Parameters assessed cover the full regulatory panel required under Spanish and EU frameworks, including pH, conductivity, turbidity, dissolved oxygen, BOD, COD, nutrients (nitrates, phosphates), and microbiological indicators such as total coliforms, Escherichia coli, and Enterococci. SONINGEO holds ENAC (Entidad Nacional de Acreditación) accreditation under UNE-EN ISO/IEC 17025 for environmental water testing, with accreditation number 501/LE1168. Of particular distinction, SONINGEO is the only laboratory in Cantabria accredited by ENAC to perform Legionella testing under UNE-EN ISO/IEC 17025 requirements, making it the reference partner for public health compliance in cooling towers, spas, hospitals, and water distribution systems throughout the region.

The building and civil works quality control laboratory (Edificación y Obra Civil) supports construction projects throughout their lifecycle with materials testing both in the laboratory and on-site. Services cover concrete testing (compressive strength, slump, bulk density, air content), mortar and grout analysis, aggregate and granular material characterization, bituminous mixture and pavement core analysis, and structural steel verification. SONINGEO technicians perform sampling and in-situ measurements on active construction sites, ensuring that materials comply with the Código Técnico de la Edificación (CTE) and applicable civil works standards before incorporation into the works. The company is authorized to issue official quality control documentation accepted by the regional building authority, serving public administrations, engineering consultancies, and construction contractors alike.

In addition to its core technical services, SONINGEO offers food safety and agri-food quality testing (Seguridad Agroalimentaria), serving food producers and related industries in Cantabria and surrounding regions. The company also provides structural pathology inspections, geotechnical instrumentation monitoring, and slope stability analysis for soil and rock masses, broadening its value proposition to clients managing road infrastructure, quarries, natural hazard mitigation programs, and long-term civil works monitoring.

SONINGEO holds dual certification under ISO 9001 (Quality Management System) and ISO 14001 (Environmental Management System), alongside its ENAC ISO/IEC 17025 laboratory accreditation. These overlapping quality frameworks ensure that field campaigns, laboratory analyses, and final technical reports meet internationally recognized standards for precision, traceability, and environmental responsibility. The company operates primarily across northern Spain but has delivered projects throughout the rest of the Iberian Peninsula and in other European countries, demonstrating capacity to handle large or geographically distributed investigation campaigns. With over two decades of experience and a highly qualified multidisciplinary team of geologists, engineers, and laboratory specialists, SONINGEO is a trusted technical partner for engineering firms, public administrations, construction companies, and environmental consultants seeking reliable, independently accredited testing and ground investigation services.