Water Purification Information on this Site

Aeration	Aeration and pH. How does pH affect the treatment of H2S? Facts about Aeration to Remove Iron and Hydrogen Sulfide. Aeration of an Irrigation Well in Texas Aeration vs Air Stripping. What's the Difference? Aeration. An excellent overview of aeration in water treatment from the Minnesota Rural Water Association.
Alakalizer	Thinking of buying a machine to "alkalize" or "ionize" your water? Read this before you buy.
Aluminum	Simple Facts About Aluminum Is Activated Alumina Toxic? Here's one manufacturer's Material Data Safety Sheet.
Ammonia Removal	Removing Chloramine and Ammonia for Aquariums
Anthrax	Anthrax Spores May Resist Conventional Water Treatment
Arsenic	Some good information about trivalent and pentavalent arsenic from NSF. Arsenic Fact Sheet.
Backwashing Filters	How to determine the flow rate capacity of your well (and why this is so important). Backwashing Sediment Filters: Some Considerations.
Carbon Filters	Carbon Filtration: What It Does, What It Doesn't by Gene Franks. What to expect from a carbon-based water filter. The amazing effectiveness of modern carbon block filters.
Chemical Feed Systems.	A handy dosage chart for various chemicals. A simple formula for feed pump dosage. A more complete look at feed pump sizing and setting. Altering pH with feed pumps. Soda Ash and Caustic Soda. Injecting Soda Ash to Increase pH. Actual Output Figures for a Stenner Peristaltic Pump
Chloramine Removal	Chloramine and the Reef Aquarium. A good explanation of chloramine and its removal by carbon filtration, reverse osmosis and deionization. Chloramines and Swimming Pools. Removing Chloramine and Ammonia for Aquariums
Chlorine	Disinfection Tables. Simple Calcultor to Show How Much Chlorine to use to Disinfect Small Amounts of Water, A Bottle, A Well, or a Tank or Cistern. Chlorine Dosage Chart. A handy chart that shows how much to use in disinfecting tanks (e.g. a hot water heater), cisterns, etc.
Filter Media	Filter Media Guide. Summary chart of the properties and uses of the most commonly used media for large backwashing water filters. Filter Media Backwash and Flow Rate Charts. This handy chart will help you choose a proper size filter for your application.
Fluoride	Fluoride. Do you want to remove it? Whole House Fluoride Removal. Is Activated Alumina Toxic? Here's one manufacturer's Material Data Safety Sheet.
Hydrogen Sulfide	Aeration and pH. How does pH affect the treatment of H2S? Blake Ross et al.: Household Water Quality: Hydrogen Sulfide in Household Water. A U. of Virginia publication. Hydrogen Sulfide and Sulfate. A very good brief explanation (including the virtues of aeration as a treatment) from the University of Georgia.
Iron Removal	Iron removal: A world without rules A compete guide to iron removal methods, equipment and their limitations. By Scott Harmon. Identifying the Iron. By Scott Harmon. A simple explanation of the types of iron. The Importance of Backwash Rate. By Scott Harmon. Read this before buying a backwashing filter for iron (or anything else).
Iron Bacteria	Iron and Sulfur Bacteria in Water Supplies. An excellent overview from Nebraska Health and Human Services.
pH Alteration	Altering pH with feed pumps. Soda Ash and Caustic Soda.
Water Softeners	How Much Sodium Does a Water Softener Add to Your Water? A practical and easy way to estimate added sodium. Do Softeners Harm Septic Tanks? The EPA's opinion
Radon Reduction	Aeration Systems Effective for Radon Reduction from *Water Technology* magazine.
Reverse Osmosis	Reverse Osmosis FAQ. All the stuff your mother neglected to tell you about reverse osmosis. Factors that affect RO membrane production rates. Words of wisdom from Water Technology magazine. Sizing Whole House Reverse Osmosis Units. How to pick a unit and storage tank that meets your needs. Dimensions of our undersink RO units. Typical Reverse Osmosis Membrane Performance. Learn how much lead, how much sodium, how much fluoride you can expect a reverse osmosis unit to remove. What Does a Top Quality Reverse Osmosis Unit Remove from Tap Water?
Sediment Filters	What are "depth filters"? Which Sediment Filter is Best?
Shower Filters	Which Shower Filter Is Best? Here's a very thorough independent review.
Sulfates	Sulfate in Well Water. What it is, and how to get rid of it. Advice from the Minnesota Dept. of Health.
Ultraviolet (UV)	Does UV control cysts like Giardia and Cryptopsporidium? Treating Ponds with UV How UV Works (Good Source for Dosage Information)
Water — General Information and Treatment Terminology	Article Archive. Articles about water contaminants and treatments. Glossary of Basic Terms Frequently Used in Water Treatment. Water & Wastes Digest Magazine's Search Engine for Terms and Products. Manufacturers' Websites. Links to websites of our main suppliers. The EPA Contaminant List (a wealth of information about water issues). Go here. Water Usage. Like to know how much water you use? Find out with this government calculator.
Well Issues	How to shock a well with chlorine. Need to replace your well's pressure tank? Go here for detailed instructions. (Please use your "Back" command to return to us.) How to Sanitize Your Well.
Water Softeners	Water Softener Maintenance Issues. Solutions to some common softener problems. What Causes Etching on Dishes? Using a softener to remove iron.