Buyer's Guide
| Company | Location | Company Type |
|---|---|---|
| H2O Bio Concepts | Phoenix | Manufacturer |
| H2O Concepts International, Inc. | Phoenix | Manufacturer |
| H2O Filter Warehouse | Marietta | Manufacturer |
| H2O International, Inc. | Deerfield Beach | Manufacturer |
| Hach Company | Loveland | Manufacturer |
| Hach Company Flow Meter Products & Services | Frederick | Manufacturer |
| Hague Quality Water Int'l | Groveport | Manufacturer |
| Halogen Valve Systems, Inc. | Irvine | Manufacturer |
| HaloSource, Inc. | Bothell | Manufacturer |
| Hankscraft H2O Products | Reedsburg, Wisconsin, United States | Manufacturer |
| Hanna Instruments USA | Woonsocket | Manufacturer |
| Hannay Reels | Westerlo | Manufacturer |
| Harmsco Filtration Products | West Palm Beach | Manufacturer |
| Harvel Plastics, Inc. | Easton | Manufacturer |
| Harwil Corporation | Oxnard | Manufacturer |
| Haws Corp. | Sparks | Manufacturer |
| HealthWay Home Products, Inc. | Pulaski, New York, United States | Manufacturer |
| Hedland | Racine | Manufacturer |
| Hellenbrand, Inc. | Waunakee | Manufacturer |
| HEMCO Corporation | Independence, Missouri, United States | Manufacturer |
| HF scientific, Inc. | Ft. Myers | Manufacturer |
| Hidell-Eyster Int'l | Hingham | Manufacturer |
| HM Digital, Inc. | Culver City, California, United States | Manufacturer |
| Hoffer Flow Controls, Inc. | Elizabeth City | Manufacturer |
| Holiday House Distributing | Land O Lakes | Distributor |
