Your well water comes from old sandstone and shale rock that sits hundreds of feet underground. These rocks formed from ancient seafloor sediment and now hold water in tiny cracks and spaces between the rock layers. The water moves slowly through these gaps, picking up minerals as it goes.
Iron and manganese dissolve out of the rock itself when water sits in contact with it underground. Sulfate comes from sulfide minerals in the shale that break down over time. These three contaminants exceed EPA health standards in Carroll County because the rock chemistry here naturally releases them into the water.
Your water is extremely hard and full of dissolved minerals. You will see orange or brown stains on sinks and laundry from the high iron content. The water tastes salty from sodium and bitter from sulfate, and it will leave white scale buildup in pipes and on fixtures.
Iron, manganese, and sulfate all exceed EPA health standards in Carroll County well water. This is a high-urgency situation that demands immediate action. Your well water contains these contaminants at levels that are unsafe for your family to drink without treatment.
Long-term exposure to manganese can harm your brain and nervous system, especially in children. Iron at these extreme levels will stain your sinks, toilets, and laundry orange or brown. The water will taste metallic and salty from the high sodium and sulfate. Your pipes and water heater will develop scale buildup that reduces water flow and shortens their lifespan.
Get your well tested by a state-certified lab right away—a comprehensive mineral and metals panel costs $200–$400. Contact the Carroll County Health Department for a list of certified labs near you. A whole-house iron and manganese removal system paired with a water softener can treat these problems.
| Contaminant | Samples ⓘ | % Above MCL ⓘ | Distribution ⓘ | Confidence ⓘ | Risk ⓘ |
|---|---|---|---|---|---|
| Manganese | 24 | 91% | 4% · 8% · 88% | Moderate | High |
| Iron | 71 | 53% | 38% · 10% · 52% | Moderate | High |
| Sulfate | 58 | 19% | 69% · 12% · 19% | Moderate | High |
| Arsenic | 4 | 0% | 100% · 0% · 0% | Low | Low |
| Chloride | 43 | 0% | 91% · 9% · 0% | Moderate | Low |
| Fluoride | 22 | 0% | 100% · 0% · 0% | Moderate | Low |
| Sodium | 48 | — | — | Moderate | Low |
| pH | 9 | — | — | Low | Low |
| Nitrite | 1 | 0% | 100% · 0% · 0% | Low | Safe |
| Nitrate | 4 | — | — | Low | Low |
| Nitrate | 1 | 0% | 100% · 0% · 0% | Low | Safe |
| Lead | 1 | 0% | 100% · 0% · 0% | Low | Safe |
| Hardness | 37 | — | — | Moderate | Low |
| Fecal Coliform | 1 | — | — | Low | Safe |
| E. coli | 1 | 0% | 100% · 0% · 0% | Low | Safe |
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.
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