Groundwater in Coryell County contains chloride, sulfate, iron, manganese, and fluoride at levels that exceed EPA health standards, along with very high sodium. These contaminant levels are serious enough that well owners should test their water and consider treatment options.
The rock layers beneath this county naturally release these minerals and salts into the groundwater. As water moves slowly through the rocks over time, it dissolves chloride, sulfate, and sodium from the stone itself. Iron and manganese leach from minerals in the rock when water sits in contact with them underground.
Groundwater in this county is soft but carries very high sodium and elevated sulfate, making it notably salty and mineralized. The salt comes from the rocks here, which naturally contain these dissolved minerals. These characteristics show up in most wells across Coryell County.
Chloride, fluoride, iron, manganese, and PFOS in Coryell County wells exceed EPA health standards. Fluoride at high concentrations can damage bone and dental health. PFOS is a chemical that builds up in your body and can affect your immune system and liver. Iron and manganese at elevated levels can harm your nervous system. Chloride in drinking water raises health concerns when it reaches high amounts.
The water in this county is quite soft, which is good for your pipes and appliances. However, you may notice a salty or unpleasant taste from the very high sodium levels. Iron can leave reddish or brown stains on laundry and plumbing fixtures that are difficult to remove. A metallic taste or odor from iron and manganese is also common in some county wells.
We recommend testing your well water to find out what is actually in it, since every well is different and yours may have higher or lower levels than what is common here. Testing is the only way to know what treatment your water needs. A comprehensive metals and minerals panel costs between two hundred and four hundred dollars and will check for all of these concerns. Ion exchange filters, reverse osmosis systems, or activated carbon can reduce many of these contaminants.
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 ⓘ |
|---|---|---|---|---|---|
| Chloride | 4 | 50% | Low | High ⓘ | |
| Sulfate | 3 | 33% | Low | High ⓘ | |
| Iron | 179 | 16% | High | High | |
| Fluoride | 273 | 9% | High | Moderate | |
| PFOS ⓘ municipal | 20 | 5% | Moderate | Moderate | |
| Manganese | 109 | 1% | High | Low | |
| Arsenic | 38 | 0% | Moderate | Low | |
| HFPO-DA (GenX) ⓘ municipal | 20 | 0% | Moderate | Safe | |
| Lead | 38 | 0% | Moderate | Low | |
| Nitrate | 13 | 0% | Low | Low | |
| PFHxS ⓘ municipal | 20 | 0% | Moderate | Low | |
| PFNA ⓘ municipal | 20 | 0% | Moderate | Safe | |
| PFOA ⓘ municipal | 20 | 0% | Moderate | Safe | |
| Uranium | 5 | 0% | Low | Safe ⓘ | |
| Sodium | 3 | — | Low | Low ⓘ | |
| pH | 4 | — | Low | Low ⓘ | |
| PFBS ⓘ municipal | 20 | — | Moderate | Low | |
| Hardness | 3 | — | 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.
Order a Tap Score Test →Population-level CDC data. Not individual risk prediction.
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