Fortunately with some quick test results you can formulate a plan to resolve the issue.
Sulfur smell in well water after heavy rain.
Tannins are most common in well water.
For well water we recommend our ironshield whole house water filtration system to remove tannins.
Shock your well with chlorine bleach or hydrogen peroxide to get temporary relief from sulfur odors.
Install a chlorine injector system chlorinator on your wellhead for continuous injection of chlorine when the water is running.
In addition to eliminating tannins iron shield also removes h2s rotten egg odor iron orange.
Chlorination eliminates the sulfur bacteria that cause the odor and combined with an air charger self.
A major indicator of tannins is a yellowish color in the water in addition to the earthy odor.
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.
The off putting smell of hydrogen sulfide in your well water can be more than a simple inconvenience.
Depending on the extent of the hydrogen sulfide intrusion resolution could be a simple fix like a carbon filter or require expert assistance.
Hydrogen sulfide gas h2s can occur in wells anywhere in minnesota and gives the water a characteristic rotten egg taste or odor.
Often keeps odors away for 1 2 months.