Groundwater in Shelby County contains manganese, iron, and fluoride at levels that exceed EPA health standards. These contaminants are present at concerning concentrations that well owners should address.
The Mississippi embayment aquifer system here naturally contains these metals and minerals. Iron and manganese occur in the rock layers themselves and dissolve into water as it moves slowly underground. Fluoride comes from minerals in the aquifer rock. These elements are released into the groundwater over time due to the chemical makeup of the rock formation.
Groundwater in Shelby County is soft but carries very high sodium and moderate iron. The soft water means low calcium and magnesium, but the dissolved iron and high sodium are notable features of wells in this area. Most wells in the county show these same characteristics because they tap the same aquifer system with its natural mineral content.
Shelby County wells show fluoride, iron, and manganese at levels that exceed EPA health standards. Too much fluoride can cause dental fluorosis, which makes spots appear on teeth, especially in children whose teeth are still developing. High iron and manganese can affect the brain and nervous system, particularly in infants and young children. These concerns deserve attention, especially if you have young children in your home.
The very high sodium in county well water is the main quality-of-life issue you might notice. High sodium can make water taste salty and unpleasant. If you have concerns about sodium intake for health reasons, you should know that your water could be adding sodium to your daily diet. The water in this county is soft, so you probably won't see scale buildup or need to worry about appliances wearing out faster from mineral deposits.
We recommend a comprehensive water test to find out what is actually in your well, since every well is different and your water could have higher or lower levels than what is common in the county. Testing is the only way to know what you are really dealing with. A full panel of metals and minerals costs between two hundred and four hundred dollars. Depending on what your test shows, treatment options like special filters or reverse osmosis systems can remove fluoride, iron, and manganese from your water.
Not sure if your well is affected? Get certified results in 5–7 days.
Test Your Well Water with Tap Score →| Contaminant | Samples ⓘ | % Above MCL ⓘ | Distribution ⓘ | Confidence ⓘ | Risk ⓘ |
|---|---|---|---|---|---|
| Manganese | 82 | 16% | Moderate | High | |
| Iron | 108 | 12% | High | Moderate | |
| Fluoride | 218 | 0% | High | Low | |
| Arsenic | 43 | 0% | Moderate | Safe | |
| Chloride | 4 | 0% | Low | Low ⓘ | |
| HFPO-DA (GenX) ⓘ municipal | 16 | 0% | Moderate | Safe | |
| Lead | 43 | 0% | Moderate | Low | |
| Nitrate | 21 | 0% | Moderate | Low | |
| Nitrite | 4 | 0% | Low | Safe ⓘ | |
| PFHxS ⓘ municipal | 16 | 0% | Moderate | Safe | |
| PFNA ⓘ municipal | 16 | 0% | Moderate | Safe | |
| PFOA ⓘ municipal | 16 | 0% | Moderate | Safe | |
| PFOS ⓘ municipal | 16 | 0% | Moderate | Safe | |
| Radon | 2 | 0% | Low | Low ⓘ | |
| Sulfate | 4 | 0% | Low | Low ⓘ | |
| Uranium | 19 | 0% | Moderate | Low | |
| Hardness | 4 | — | Low | Low ⓘ | |
| PFBS ⓘ municipal | 16 | — | Moderate | Safe | |
| pH | 4 | — | Low | Low ⓘ | |
| Sodium | 4 | — | Low | Low ⓘ |
MCL = Maximum Contaminant Level (EPA limit for public water; used as benchmark for private wells). Distribution shows % of sampled wells in each concentration band. Methodology.
* Microbial contaminants (E. coli, coliform) reflect only samples from the last 10 years.
Data shows potential risk — a certified test confirms whether your water is affected.
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