Arsenic in Lafayette Parish Household Water: What Local Groundwater Sampling Shows
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1. What Certified Laboratory Testing Reports for Arsenic and How to Read It
Certified laboratory tests for arsenic analyze water samples to measure the concentration of arsenic in micrograms per liter (ug/L). For Lafayette Parish, aquifer 112CHCTU, U.S. Geological Survey sampling from 31 wells found arsenic detected in all 56 results, ranging from 0.18 ug/L to 26.9 ug/L with a median of 1.3 ug/L. None of these values exceeded the federal arsenic standard. Understanding your own water’s arsenic level requires a similar certified test of your specific source because area-wide data cannot predict individual well results.
2. Important Details to Record Before Seeking Treatment Advice
Before considering water treatment, collect detailed information about your water source and usage. Note the depth of your well if applicable, since sampled wells ranged from 11 to 250 feet deep in the local area. Record any laboratory arsenic concentration results you have, your household water use patterns, and any concerns observed such as taste or staining. This information helps determine if arsenic treatment is appropriate and what capacity is needed.
3. How Water Changes at the Tap with the Fleck Arsenic Filter
The Fleck Arsenic Filter ships ready to configure for home use and is designed to reduce arsenic in drinking water. Once in place, treated water from your tap will have lower arsenic concentrations consistent with the filter’s capability, improving safety margin and peace of mind. Other water characteristics generally remain unchanged, as the technology specifically targets arsenic compounds without altering taste or other minerals significantly.
4. Considerations for Larger or Seasonal Households
Households with more residents or properties used seasonally should consider water treatment capacity carefully. Larger daily water demand means the arsenic filter must handle more volume without performance loss. For second homes, ensure the filter maintains effectiveness even with intermittent use, as stagnant water could affect treatment dynamics. Proper sizing based on your household’s actual water consumption is essential.
5. How Arsenic Enters Groundwater in Lafayette Parish
In Lafayette Parish, arsenic originates naturally from geologic formations interacting with groundwater in aquifer 112CHCTU. These interactions can release trace amounts of arsenic from minerals into water wells. This natural occurrence explains the range of arsenic levels found in government sampling. The regional data shows low to moderate arsenic presence but does not imply any individual well will have similar levels.
6. Evaluating Treatment Capacity Against Daily Household Water Use
Choosing an arsenic filter requires matching treatment capacity to daily household water consumption. Consider the number of people, typical daily usage for drinking, cooking, and cleaning, and peak demand periods. Proper capacity ensures continuous arsenic reduction without overloading the system. This planning helps maintain effective arsenic control and extends the filter’s service life.
Government sampling for Lafayette Parish’s aquifer 112CHCTU, based on 56 results from 31 wells between 2011 and 2021, detected arsenic at levels well below federal standards. For detailed data, visit the U.S. Geological Survey monitoring location for this area.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2021-07-22. 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 112CHCTU aquifer (Lafayette Parish): 56 results from 31 wells, median 1.3 ug/L, range 0.18-26.9 ug/L; none above any federal threshold