Water Quality

How do you regenerate manganese greensand filter media just purchased prior to placing it into service?

The manganese greensand process has been used effectively to remove iron, manganese, and hydrogen sulfide since the 1950s in the U.S. Greensand is an organic fertilizer that contains the deposits t...

Ozone and Its Effect on Removing Iron or Manganese in Water explained

Ozone is sometimes called "activated oxygen". It contains three atoms of oxygen rather than the two atoms we normally breathe. Ozone is the second most powerful sterilant there is and it can be use...

Potassium Permanganate Used in Greensand Water Filters

Potassium permanganate is the chemical compound KMnO4. In this salt, manganese is in the +7 oxidation state. The salt is also known as "permanganate of potash." The permanganate ion is a strong ox...

If I live in a major metropolitan area, is it legal for me to put a salt-based water softener on my household plumbing system?

A water softener reduces the dissolved calcium, magnesium, and to some degree manganese and ferrous iron ion concentration in hard water. These "hardness ions" cause three major kinds of undesired...

Tips to Know the Right Time to Manually Backwash An Acid Neutralizing Filter Unit

An acid neutralizing unit is used to offset, or equalize the high pH of a liquid. The pH of a liquid, soil, or other substance indicates whether it is acidic, neutral, or basic. The pH scale range...

CAN DISINFECTION OF A GROUND WATER SOURCE FOR PATHOGEN CONTROL CAUSE AN ARSENIC PROBLEM?

Arsenic is an element that occurs naturally in rocks and soil. Arsenic can combine with other elements to make chemicals used to preserve wood and to kill insects on cotton and other agricultural ...

Ultrafiltration – A Membrane Filtration Technology

Ultrafiltration (UF) is a type of membrane filtration in which hydrostatic pressure forces a liquid against a semipermeable membrane. A semipermeable membrane is a thin layer of material capable of...

IF I HAVE A PRIVATE WELL, IS NITRATE ONE OF THE REGULAR TESTS I SHOULD GET ON MY WATER?

Ground water is a resource found under the earth’s surface. Most ground water comes from rain and melting snow soaking into the ground. Water fills the spaces between rocks and soils, making an “a...

Can drinking water reservoirs develop manganese problems due to temperature stratification?

Yes they can, depending on the manganese levels contained in bottom sediments and changes in oxidation-reduction potential near and in the sediments. Normally manganese is contained in bottom sedi...

Use of GAC created from bi-products to produce higher quality well-water

GAC is often made from bituminous coal, walnut shells, coconut shells, lignite or peat. GAC media from bituminous coal is activated by high temperature heating with steam. This produces a high den...

Are there any beneficial industrial or environmental aspects of the bacterial colonies called biofilms?

Just what is a Biofilm? A biofilm is a complex structure of bacteria living as a community within a sticky slime layer of their own making. Biofilms can attach to any surface that stays wet. Biofi...

CAN GENETIC MUTATIONS OF MICROBES THAT LIVE IN WATER RESULT IN NEW PATHOGENS FROM SOURCE WATERS USED FOR DRINKING?

One thing that can be stated about microbes, and in general, about the life unseen around us...is that it is always adapting. So yes, the potential is always there. Just as a baby changes slowly i...

Are chemicals commonly found in nature less in toxic drinking water than synthetic chemicals from pollution?

Not necessarily. Many chemicals that occur in nature can be harmful to your health, and they can dissolve in water. A few examples are arsenic, radium, radon, and selenium. Also, some nontoxic nat...

Will a drought impact ground water quality?

First of all, it's important to define a drought. A public water supplier is concerned with two aspects of drought. The first is the physical effect on water quantity and water quality (supply). T...

WHY IS THERE A GROWING INTEREST IN THE USE OF MEMBRANE FILTRATION SYSTEMS TO REPLACE THE GRANULAR MEDIA FILTRATION METHOD?

Technological advances in membrane filtration systems and water quality concerns for granular systems that use sand and/ or anthracite are causing this paradigm shift. The concern over disinfectan...