| HACH |
| HAMON |
| HANNA INSTRUMENTS |
| HAURATON |
| HEGLER FRANCE |
| HELIOS |
| HERLI |
| HERMES TECHNOLOGIE |
| HIDRACINCA |
| HIDROSTAL FRANCE |
| HITEC |
| HPS |
| HUBER TECHNOLOGY |
| HULTEC EUROPE |
| HUOT |
| HUWER GROUP |
| HYDRALIANS |
| HYDRAUSMART |
| HYDRAUSOFT |
| HYDREKA |
| HYDREOS / France Water Team |
| HYDROCONCEPT |
| HYDROMECA |
| HYDROTEC TP FRANCE |
