The U.S. Geological Survey has sampled groundwater from two wells in St. Clair County’s N500VLYRDG aquifer between 2013 and 2022. The median arsenic level found was 0.22 micrograms per liter, with a range from 0.14 to 0.3 micrograms per liter. These results reflect measurements from specific wells located 210 feet deep and do not reflect the arsenic concentration of your well or tap water directly. The sampling data showed all detected concentrations were below federal arsenic limits.
If your home’s plumbing is older or made of certain materials
Plumbing material and age can influence water quality independently of the aquifer source. Lead or other metals can leach from pipes or fixtures, but arsenic typically comes from natural geological sources rather than plumbing. Thus, while older plumbing may affect some water characteristics, arsenic levels measured in source water remain unaffected by pipe materials. Testing your water for both source and distribution system contaminants is necessary to understand your household’s true exposure.
If you operate a business or commercial facility
Commercial or industrial operators need to consider larger water volumes and potentially more stringent regulatory requirements. They may also address uses beyond drinking water, such as food preparation or equipment rinsing, which adds complexity to arsenic management. Unlike residential concerns, commercial operators often require precise water quality documentation and may implement treatment systems sized for higher flow rates or specific processes.
If arsenic in water remains untreated over time
When arsenic is present in water at measurable levels, long-term consumption without treatment can lead to gradual buildup in the body. Health authorities emphasize that chronic ingestion of arsenic from water above regulatory limits can be a concern. The USGS data for this aquifer shows arsenic below the federal threshold, but individual well testing is needed to confirm safety. Untreated arsenic does not typically cause immediate water changes like taste or odor.
If treated water is delivered through a Fleck Arsenic Filter system
Once water passes through the Fleck Arsenic Filter, arsenic levels can be significantly reduced according to product documentation. This system is designed to operate within the capacity needed for typical household water demand. Treated water at your tap should then have arsenic concentrations lowered from the untreated source level, contributing to peace of mind about water quality.
If you observe certain household water symptoms
Some water characteristics like a metallic taste, discoloration, or staining may arise from other minerals or plumbing issues and do not specifically indicate arsenic presence. Arsenic itself does not affect water taste, color, or smell at typical environmental levels. Therefore, absence of these symptoms does not guarantee low arsenic, and their presence does not confirm arsenic contamination. Confirming arsenic in your water requires sampling from your own well or supply.
The Fleck Arsenic Filter ships ready to configure and addresses arsenic reduction needs based on your household’s water usage, as determined by your measured daily demand. Testing your water specifically for arsenic concentration remains the essential first step to deciding if treatment is appropriate for your home in St. Clair County’s aquifer area.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2022-06-29. 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 N500VLYRDG aquifer (St. Clair County): 4 results from 2 wells, median 0.22 ug/L, range 0.14-0.3 ug/L; none above any federal threshold
- ✓ 90-Day Money-BackNo restocking fees — return within 90 days.
- ✓ Manufacturer WarrantyGenuine Fleck · Pentair · VIQUA equipment.
- ✓ Free Expert SizingTalk to a specialist and buy the right system the first time.