What are Tannin Resins?

Tannin resins are byproducts of the fermentation process of organic matters, such as plants, and in some cases, animals. The fermentation process produces these organics as water passes through the decaying matters in peaty soil. During the natural break down process of decaying vegetation, the water turns into a faint yellow to tea-like color with an unpleasant taste, musty to earthy odor, and discolored appearance.
Also known as fulvic or humic acid, tannins are quite common in marshy, coastal, and low-lying areas as well as in shallow water supplies, whether from private wells or municipal water systems.

What are the Health Effects Associated with Tannin Resins in Drinking Water?

Although they may taste unpleasant and may have a musty/earthy odor, these byproducts of nature have no negative effects on the individual’s health. While considered as aesthetic problems, consuming tannin resins in drinking water is an unpleasant experience. Taking the necessary actions to solve the problem is essential to remove the contaminants in the water.

How Long Does Tannin Resins Last?

With regular treatment, tannin resins in drinking water will go away in three to four days. If left untreated, it will last for a long time.

How Do You Test for Tannin Resins in Drinking Water?

You can test your drinking water for tannin resins with a simple procedure of getting sample water on clear glass and allow it to stay overnight. Tannins leave a strong and intact color. On the other hand, if the color stays at the bottom of the glass, the probable causes are iron and manganese. You can either test it on your own or have the local or state health department test it for you.

How Do You Remove Tannin Resins from Drinking Water?

First and foremost, it’s crucial to find the cause of the color in the water before you take any other course of action. In most cases, the main causes of discoloration in your drinking water are organic matters. If you rely on a deep well, find out if decomposing materials like plants fall or get trapped on your water source. Remove them to eliminate the cause of the problem. Anion exchange resin, oxidation, and filtration are among the water treatment methods used to remove tannin resins in drinking water. When you find the root cause of the discoloration, it’s a lot easier to eliminate the tannin coming from the water source. Either of the three filtration methods can help you filter the contaminant from the water.

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