Groundwater in Douglas County contains chloride and fluoride at levels low enough that no EPA health standards are exceeded. Well owners should be aware of these contaminants, but current levels in this county's water are not a health concern.
The crystalline rock underneath Douglas County naturally releases small amounts of these minerals as water moves through fractures and spaces in the stone. The rock here breaks down slowly, and the granite and other hard rock that make up the aquifer contribute chloride and fluoride in modest amounts. Rain and surface runoff also add some chloride to groundwater over time.
Groundwater in Douglas County is soft, with very low levels of hardness minerals like calcium and magnesium. The hard crystalline rock that supplies water to wells in this area does not contain the limestone or other minerals that would create harder water. This soft water character is consistent across most wells throughout the county.
Wells in Douglas County show no contaminants that exceed EPA health standards, which is good news for your family's health. However, county wells do contain other minerals at levels worth monitoring. Testing your specific well is the only way to know exactly what you're dealing with and whether treatment makes sense for your situation.
The soft water in this county's wells is actually a benefit for your appliances and plumbing. You won't deal with the scale buildup, staining, or soap scum problems that come with hard water. Your water heater and dishwasher should stay in good working condition longer than in areas with harder water.
We recommend getting your well tested to see what minerals are in your water right now. Every well is different, and yours could have higher or lower levels than what's typical in the county. A basic screening costs $50-100 and checks the main concerns. If you want more detail about minerals and metals, a comprehensive panel runs $200-400. Treatment options like filtration or ion exchange can address specific issues once you know what's present.
| Contaminant | Samples ⓘ | % Above MCL ⓘ | Distribution ⓘ | Confidence ⓘ | Risk ⓘ |
|---|---|---|---|---|---|
| Fluoride | 2 | 0% | Low | Low ⓘ | |
| HFPO-DA (GenX) ⓘ municipal | 4 | 0% | Low | Safe ⓘ | |
| HFPO-DA (GenX) ⓘ municipal | 4 | 0% | Low | Safe ⓘ | |
| PFOA ⓘ municipal | 4 | 0% | Low | Safe ⓘ | |
| PFNA ⓘ municipal | 4 | 0% | Low | Safe ⓘ | |
| Chloride | 2 | 0% | Low | Low ⓘ | |
| PFBS ⓘ municipal | 4 | — | Low | Safe ⓘ | |
| pH | 2 | — | Low | Low ⓘ | |
| Sodium | 2 | — | Low | Low ⓘ | |
| Hardness | 2 | — | 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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