A major indicator of tannins is a yellowish color in the water in addition to the earthy odor.
Sulfur smell in well water after heavy rain.
If your water smells strongly of sulfur or rotten eggs it is likely attributed to the presence of sulfur bacteria or hydrogen sulfide.
Depending on the extent of the hydrogen sulfide intrusion resolution could be a simple fix like a carbon filter or require expert assistance.
Shock your well with chlorine bleach or hydrogen peroxide to get temporary relief from sulfur odors.
Often keeps odors away for 1 2 months.
Tannins are most common in well water.
Our well had this problem since we drilled it years ago it was cased to 60 feet and drilled to over200 the water was free of bacteria and the odor was due to h2s it was worse with certain weather conditions the thing that helped us most was removing the sacrificial anode from the heater years ago.
For well water we recommend our ironshield whole house water filtration system to remove tannins.
Hydrogen sulfide gas h2s can occur in wells anywhere in minnesota and gives the water a characteristic rotten egg taste or odor.
Sulfur bacteria dwell in oxygen deficient environments such as deep wells or plumbing systems and feed on decaying organic matter creating hydrogen sulfide gas that gets trapped in water sources.
Fortunately with some quick test results you can formulate a plan to resolve the issue.
Chlorination eliminates the sulfur bacteria that cause the odor and combined with an air charger self.
The off putting smell of hydrogen sulfide in your well water can be more than a simple inconvenience.