Well Water in Washington County: What to Test and Why

Moderate Risk
Testing Recommended 236 well tests on record
Top Concerns in This County
Iron Manganese

Why This Happens Here

No contaminants have been detected in Washington County's groundwater at levels that exceed EPA health standards. Contaminant levels in this county are low.

The rock layers beneath Washington County naturally filter and protect the groundwater from contamination. The local geology acts as a barrier that keeps harmful substances from reaching the water supply, which is why test results show such clean conditions across the county.

Specific information about hardness and mineral content is not available from the data collected, but the rock type in this county typically produces groundwater with variable mineral character. Wells in Washington County may have different mineral profiles depending on their depth and location, so your individual water results could vary from your neighbors.

What This Means for You

Wells in Washington County have not shown contaminants at levels that exceed EPA health standards. Testing in the county has not detected concerning chemicals or bacteria at dangerous concentrations. This is good news for your water quality overall.

Some wells in this county do show sediment and iron, which can affect how your water looks and tastes. Iron can leave reddish or brownish stains on your fixtures, laundry, and sinks. You might notice a metallic taste or smell in your water. These issues are annoying but not health problems.

We recommend testing your well to find out what is actually in your water, since every well is different. Your well could have higher or lower levels than what is common in the county. Testing is the only way to know for sure what you are dealing with. A basic screen costs around fifty to one hundred dollars and can check for the most common problems. Treatment options like iron filters or sediment filters can help if your well has these issues.

Not sure if your well is affected? Get certified results in 5–7 days.

Test Your Well Water with Tap Score →

Contaminant Detection Data

Contaminant Samples % Above MCL Distribution Confidence Risk
Iron 51 57%
Moderate High
Manganese 33 18%
Moderate High
Fluoride 128 0%
High Low
HFPO-DA (GenX) ⓘ municipal 6 0%
Low Safe
PFOA ⓘ municipal 6 0%
Low Safe
Arsenic 33 0%
Moderate Low
Chloride 128 0%
High Low
PFNA ⓘ municipal 6 0%
Low Safe
Lead 33 0%
Moderate Low
Nitrate 19 0%
Moderate Low
PFHxS ⓘ municipal 6 0%
Low Safe
PFOS ⓘ municipal 6 0%
Low Safe
Sulfate 128 0%
High Low
Sodium 128
High Low
Hardness 19
Moderate Low
Total Coliform 85* 0%
Moderate Low
E. coli 37* 0%
Moderate Low
Fecal Coliform 46* 0%
Moderate Low
PFBS ⓘ municipal 6
Low Safe
pH 234
High 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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