Fleck Arsenic Filter

Buy Now

View full details

When Area Public-System Records Provide Different Information Than Private Well Testing

Government monitoring of groundwater in Harris County's aquifer 112CEVG reveals arsenic detected in all 51 water samples collected from 38 different wells between 2010 and 2015. The median arsenic concentration was 3.1 micrograms per liter, with levels ranging from 0.81 to 5.2 micrograms per liter. Importantly, none of these measurements exceeded any federal arsenic threshold.

However, these figures represent a regional snapshot and cannot substitute for testing your own well water. Area sampling is averaged over multiple deep wells (from 1020 to 1770 feet deep) and does not indicate what your household water specifically contains. Only a certified laboratory test on a current sample from your well can establish your exact arsenic concentration and inform any treatment needs.

If You Consider Sample Depth and Source Type in Understanding Arsenic Expectations

The water samples cited were taken from deep wells tapping the aquifer, which may differ chemically from shallower or differently sourced water supplies. Arsenic concentration can vary with depth and local geology, so these area measurements serve as a broad indication rather than a definitive statement about your water.

If your household water comes from a private well of similar depth, the regional data suggests some presence of arsenic is likely but not guaranteed. If your water source differs substantially in depth or type, arsenic levels may be lower or higher than the area median, underscoring the need for direct testing.

When Arsenic Stands Apart From Other Common Water Quality Concerns

Arsenic is distinct from many other groundwater constituents such as hardness, iron, or manganese. It is a contaminant that can occur naturally in aquifers but requires precise detection and monitoring due to its potential health impacts over long-term exposure.

Unlike some issues that affect taste, staining, or water appearance, arsenic is odorless and tasteless. This characteristic makes it particularly important to rely on accurate testing rather than sensory observations.

If You Interpret Certified Laboratory Arsenic Test Results for Your Well

A certified laboratory report for arsenic will provide a concentration value in micrograms per liter (µg/L). The federal standard for arsenic in drinking water is 10 µg/L. Concentrations measured below this regulatory level are considered compliant with health-based standards.

Understanding your lab results helps determine the necessity and type of treatment your household water requires, especially after the failure of existing equipment designed to address arsenic.

When Comparing Harris County Arsenic Data with Neighboring Counties

Regional comparisons can offer context but must be approached cautiously. Adjacent counties may have different aquifers, geological conditions, and arsenic concentrations. Without careful consideration, one might overinterpret small differences or assume uniformity across boundaries.

Use neighboring county data for perspective but rely primarily on your own water test for decisions affecting your household.

If You Understand the Difference Between Aesthetic Secondary Standards and Health-Based Limits for Arsenic

Arsenic is regulated by a health-based federal drinking water standard, which differs from secondary standards that address aesthetic issues like taste or staining. Chloride and total dissolved solids thresholds, for example, relate to aesthetic concerns but do not apply to arsenic compliance or health risk assessment.

Recognizing this distinction is important in interpreting water quality data and choosing appropriate treatment solutions.

Next Step: What Test Should You Order to Confirm Your Water's Arsenic Level?

To resolve uncertainty about arsenic in your household water following equipment failure, arrange for a laboratory analysis of a current water sample from your well. A test that quantifies arsenic concentration in micrograms per liter will provide the definitive data you need.

If the result shows measurable arsenic and you seek to restore safe water quality, the Fleck Arsenic Filter ships ready to configure and can effectively reduce arsenic concentrations in residential water supplies. This technology provides a documented solution tailored to arsenic removal needs following equipment issues.

Where this information comes from

Source: USGS groundwater sampling. Sampled 2015-07-15. These figures describe groundwater sampled in this area. They are not a test of any individual private well - only a test of that well can establish its own water.

On record: U.S. Geological Survey sampling of Arsenic in the 112CEVG aquifer (Harris County): 51 results from 38 wells, median 3.1 ug/L, range 0.81-5.2 ug/L; none above any federal threshold