HYDROKARST joins JARNIAS GROUP! HYDROKARST, an expert in difficult-access works, hydromechanical, underwater and hyperbaric operations, is joining the Jarnias Group, the European leader in high-altitude works — a unique combination of expertise. Our locations: - Hydrokarst France (Sassenage 38 – headquarters, Berre-l’Étang, Ardèche) - SDEM (Sassenage 38) - Hydrokarst Swiss (Sugiez / TSM PERROTTET) - Hydrokarst Indian Ocean (Reunion Island) - Hydrokarst Zambia What we do : • Securing and stabilizing cliffs • Work in confined, underwater and hyperbaric environments • Installation and renovation of hydromechanical equipment through SDEM • Maintenance and inspection in complex environments • Execution of EPC projects Our fields / sectors : • Energy & hydropower • Maritime • Strategic infrastructures • Special works
| Website | http://www.hydrokarst.fr |
| Revenue | $68.2 million |
| Employees | 223 (130 on RocketReach) |
| Founded | 1977 |
| Address | 9 bis Avenue De La Falaise, Sassenage, Wallis and Futuna 38360, FR |
| Phone | +33 4 76 21 34 06 |
| Industry | Construction, Commercial & Residential Construction, Construction and Engineering, Real Estate, Consulting Services (B2B), Ports and Harbors, Transportation, Public Safety, Government and Military, Water, Natural Resources |
| Competitors | Veolia, SGS, SUEZ, Insitu Inc, GEOTEK LLC, geoLOGIC systems ltd., Geoprobe Systems®, Enviro Tech Chemical Services, Kryolux Inc, EST SIGNALISATION +32 more (view full list) |
| SIC | SIC Code 179 Companies, SIC Code 17 Companies |
| NAICS | NAICS Code 2389 Companies, NAICS Code 238990 Companies, NAICS Code 23899 Companies, NAICS Code 23 Companies, NAICS Code 238 Companies |
Looking for a particular Hydrokarst employee's phone or email?
Hydrokarst Questions
The Hydrokarst annual revenue was $68.2 million in 2026.
Mathieu Augereau is the Managing Director of Hydrokarst.
130 people are employed at Hydrokarst.
Hydrokarst is based in Sassenage, Wallis and Futuna.
The NAICS codes for Hydrokarst are [2389, 238990, 23899, 23, 238].
The SIC codes for Hydrokarst are [179, 17].
Top Hydrokarst Employees
-
Mathieu Augereau
Managing Director at Hydrokarst
Versailles, FR23 -
2
-
Yann Charles-Vallet
Responsable d’Exploitation Hydromécanique and Hyperbare at Hydrokarst
Grenoble, Auvergne-Rhône-Alpes, FR2 -
1
-
Marcel Micha
Animateur QSSE at Hydrokarst
Sassenage, FR2 -
Rui Leitao
Project Manager at Hydrokarst
Mozambique31 -
Renaud Rey
Responsable d’exploitation at Hydrokarst
Grenoble, Auvergne-Rhône-Alpes, FR2
Related Companies
