Trinity County's groundwater contains manganese, iron, and arsenic. Iron and manganese exceed EPA health standards in this area, which is a concern that well owners should address.
These metals come from the rock layers underground in this region. The Texas coastal uplands aquifer system here contains minerals that naturally release iron and manganese into the water as it flows through the ground.
Groundwater in Trinity County is notable for elevated iron and manganese from the rock formations below. These metals dissolve naturally as water moves through the aquifer system, and this pattern shows up in wells across the county.
Wells in Trinity County commonly have iron and manganese at levels that exceed EPA health standards. Iron can cause problems with your blood and organs if you drink water with too much of it over many years. Manganese can affect your brain and nervous system with long-term exposure to high levels. These metals are naturally present in the ground in this area.
Iron in county well water creates orange or brown staining on sinks, toilets, and laundry that is hard to remove. It can also leave a metallic taste in your water and cause rust-colored deposits throughout your plumbing system. Manganese often appears as black stains and can make water taste unpleasant. These stains and deposits are frustrating to clean and can build up over time.
We recommend testing your well water to find out what is actually in it, since every well is different and your water may have higher or lower levels than other wells in the county. Testing is the only way to know what needs to be treated. A comprehensive metals and minerals panel typically costs between $200 and $400 and will give you a complete picture. Iron and manganese can often be removed with filtering systems or oxidation treatments designed for these specific problems.
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 | 31 | 42% | Moderate | High | |
| Iron | 47 | 26% | Moderate | High | |
| Arsenic | 26 | 0% | Moderate | Safe | |
| Fluoride | 69 | 0% | Moderate | Low | |
| Lead | 26 | 0% | Moderate | Low | |
| Nitrate | 1 | 0% | Low | Safe ⓘ | |
| Uranium | 3 | 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.
* 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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