Flow restrictor 1000 ml/min for residential RO systems — FR-1000-02, Flow Restr, T x T 1000 ml/Min, FR-1000P-EZ
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The U.S. Geological Survey has collected groundwater samples from 16 wells in the Washington County area, spanning depths between 75 and 1000 feet, and analyzed results for hardness constituents calcium and magnesium. Their samples, taken from 2010 through 2025, show that calcium and magnesium were detected in all 129 results, with a median concentration of 312.0 mg/L and a range from 134.0 up to 2440.0 mg/L. None of these results exceeded any federal thresholds.
Information to Record Before Seeking Treatment Advice
To effectively address spot-free dish issues, first document the following:
- The source of your water supply (private well or public system)
- Recent water testing results specific to your water supply, especially for calcium and magnesium
- The types of spots observed on dishes and glassware (mineral, cloudy, or film-like)
- Any existing water treatment equipment you currently use
Differentiating Spot-Free Dishwater Issues from Similar Problems
Spotting on dishes can be confused with cloudiness or film deposits caused by other factors. Spots typically result from mineral residues that remain after water evaporates, distinct from soap scum or hardness scaling inside appliances. Unlike cloudy dishes caused by air bubbles or detergent residue, spots are often linked to the mineral content in water.
Origin of Minerals Affecting Dishes in Washington County Aquifer
Calcium and magnesium enter the groundwater as it moves through mineral-rich rock formations in the region. Concentrations vary significantly, as shown by the range in samples, reflecting diverse geological conditions from well to well. This natural presence of minerals influences water hardness and can leave mineral deposits on dishes after washing.
How the Fleck Spotty Dishes & Glassware System Addresses This Issue
The Fleck System is designed to reduce the impact of minerals like calcium and magnesium by conditioning water to minimize deposits on dishes and glassware. It ships ready to configure and works by altering the state or concentration of these minerals to reduce spotting effects.
Understanding Sampling Data Terms in This Context
Detected means the measuring instruments found calcium and magnesium in all samples; it does not imply a violation or unsafe condition. The median value represents the middle concentration of those measurements, while the range indicates the variability from the lowest to highest found in the sampled wells. These figures provide a regional overview but cannot specify conditions for any individual water source.
Differences Between Public System and Private Well Water Testing
Public water systems undergo routine testing and reporting, offering data on water characteristics over time. Private well owners are responsible for testing their water, providing specific results for their source. Public records do not define individual well conditions but give insight into general water quality trends in the area.
Recommended Next Step: Testing to Confirm Your Water’s Mineral Content
Ordering a laboratory test for calcium and magnesium concentrations specific to your water supply is vital to confirm whether mineral levels might be contributing to dish spots. Results showing elevated levels similar to regional medians would strongly suggest that water conditioning with the Fleck Spotty Dishes & Glassware System could improve dish appearance and reduce spotting.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2025-04-23. 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 Hardness, Ca, Mg in the aquifer (Washington County): 129 results from 16 wells, median 312.0 mg/L, range 134.0-2440.0 mg/L; none above any federal threshold