No contaminants have been detected in Miami-Dade County groundwater at levels of concern. Contaminant levels here are low, and your well water meets health standards for the measured parameters.
The surficial aquifer system in this county sits close to the surface and draws water through sandy and porous rock layers. These materials filter water naturally and do not trap harmful substances. The local geology and land use work together to keep contamination away from your water supply.
Without available mineral data, the water character in this county is best understood through the sandy aquifer type present here. Sandy layers do not dissolve minerals the way limestone does, so groundwater tends to remain relatively low in hardness and iron. These conditions are widespread across wells throughout the county.
Good news: wells in Miami-Dade County are not showing analytes at levels that exceed EPA health standards. Water quality in the county appears to be holding up well overall. This is a positive sign for private well owners in the area.
Mineral content in county wells has not been flagged as a widespread concern. Without high levels of iron, sodium, or other minerals causing problems, most wells in this county are not creating staining, scale buildup, or taste and odor issues that plague wells in other regions. Your water experience should be relatively clean and clear.
We recommend testing your well anyway, because every well is different and yours could have contaminants that are not common in the county. Testing is the only way to know what is actually in your water so you can treat it properly if needed. A basic screening for bacteria and nitrate runs fifty to one hundred dollars. If you want a fuller picture, a comprehensive metals and minerals panel costs two to four hundred dollars. Many well owners use simple filtration or aeration systems based on their test results.
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 ⓘ |
|---|---|---|---|---|---|
| PFOS ⓘ municipal | 56 | 91% | Moderate | High | |
| Iron | 1799 | 67% | High | High | |
| PFOA ⓘ municipal | 56 | 57% | Moderate | High | |
| Chloride | 23260 | 39% | High | High | |
| Radon | 20 | 25% | Moderate | High ⓘ | |
| Arsenic | 1113 | 12% | High | Moderate | |
| Sulfate | 2094 | 9% | High | Moderate | |
| Manganese | 1368 | 8% | High | Moderate | |
| Lead | 1227 | 1% | High | Low | |
| Fluoride | 1698 | 1% | High | Low | |
| Nitrate | 2159 | 0% | High | Low | |
| Nitrite | 1925 | 0% | High | Low | |
| HFPO-DA (GenX) ⓘ municipal | 56 | 0% | Moderate | Safe | |
| Uranium | 200 | 0% | High | Low | |
| PFHxS ⓘ municipal | 56 | 0% | Moderate | Low | |
| PFNA ⓘ municipal | 56 | 0% | Moderate | Low | |
| pH | 2453 | — | High | Low | |
| Sodium | 1830 | — | High | Low | |
| Hardness | 1947 | — | High | Low | |
| Total Coliform | 111* | 0% | High | Low | |
| E. coli | 64* | 0% | Moderate | Low | |
| Fecal Coliform | 47* | 0% | Moderate | Low | |
| PFBS ⓘ municipal | 56 | — | Moderate | 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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