Education Center
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General
- What is Water?
- History of Drinking Water and Water Filtration
- Basic facts of drinking water
- Drinking Water Sources (A. Tap (municipal) Water; B. Ground Water; C. Lakes, Streams, etc.; D. Well Water; E. Bottled Water; F. Filtered/Purified Water)
- Water Quality Testing Basics
- When Should Water be Tested?
- Water Treatment Fundamentals
- What are Water Quality Testers (Meters)?
- The Relationship Between TDS and Electrical Conductivity
- Common TDS found in water (good and bad) / Contaminants & Impurities
- Drinking Water Standards
- Bottled Water and Federal Labeling Requirements
- The Human Body and Water
- Benefits of Pure Water for Health
- Benefits of Mineral Water for Health
- Disadvantages of Drinking Pure Water
- Disadvantages of Drinking Mineral Water
- Water Conservation Tips
- Glossary
Water Problems
Parameters
Filtration & Purification Processes
- Chemical Disinfection/Oxidants – Chlorination
- Chemical Disinfection/Oxidants - Ultraviolet Light (UV)
- Chemical Disinfection/Oxidants - Ozonation
- Filtration – Granular Filtration
- Filtration – Direct Filtration
- Filtration – Slow Sand Filtration
- Filtration – Bag/Cartridge Filtration
- Filtration – Ceramic Filtration
- Filtration – Biosand Filtration
- Membrane Process – Microfiltration
- Membrane Process – Ultrafiltration
- Membrane Process – Nanofiltration
- Membrane Process – Electrodialysis/Electrodialysis Reversal
- Reverse Osmosis FAQs
- Absorption and Ion Exchange Systems – Activated Carbon (Powdered and Granular)
- Deionization Absorption and Ion Exchange Systems – Ion Exchange (DI)
- Absorption and Ion Exchange Systems – Activated Alumina
- Solar Treatment – Solar Disinfection & Distillation
- Distillation
- The future of Water Filtration & Purification
Industries and Applications
- Fruit and Vegetable Washing (ORP)
- Environmental Testing
- Vineyards and Wineries
- Horticulture
- Metal Finishing (ORP)
- Ozone System Monitoring (ORP)
- Pulp Bleaching (ORP)
- Printing Industry
- Pharmaceutical and Medical
- Laboratory Science
- Circuit Board/ Semiconductor Manufacturing
Products for Water Quality
Learn about HM Digital's line of water quality testing products.
Did You Know?
Water is our planet's most precious resource.
- The average American uses about 50 gallons (190 liters) of water daily.
- Flushing a toilet uses 2 to 7 gallons (7.5 to 26.5 liters) of water.
- A five-minute shower uses 25 to 50 gallons (95 to 190 liters) of water.
- Leaving the water on while brushing your teeth wastes 2 gallons (7.5 liters) of water each time!
- At least 400 million people live in regions with severe water shortages.
- Water is the original health drink. It contains no fat, no calories and no cholesterol.