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Understanding 'Detected,' 'Median,' and 'Range' in Butte County Water Sampling

The U.S. Geological Survey conducted groundwater sampling in Butte County's aquifer 110SKRV, gathering 183 results from 41 wells between 2010 and 2026. Here, 'detected' indicates the constituent was measured in every sample, meaning it consistently appears in local groundwater. The 'median' value of 232.0 mg/L represents the middle hardness level across all samples, offering a typical value around which the majority cluster. The 'range' from 116.0 to 590.0 mg/L shows variability between the softest and hardest measurements found. These figures summarize regional conditions and do not describe any single well.

How to Interpret a Certified Laboratory Test for Your Well Water

Testing your household water provides a specific snapshot of your well's condition. Certified tests measure calcium and magnesium concentrations, which combine to indicate hardness. Results will report values in milligrams per liter (mg/L), highlighting how your water compares to regional data. Understanding these figures helps determine if your system’s capacity meets your home's demand and whether treatment adjustments are warranted.

What Changes at the Tap After Adding the Autotrol Complete Well System

The Autotrol Complete Well System, with a grain capacity of 32,000, is designed to address high mineral concentrations typical in Butte County's aquifer. Once configured for your home, it helps reduce the pressure on existing equipment by efficiently treating the water to better match household usage rates. This results in more consistent water flow and less buildup from minerals in plumbing and appliances, improving water quality experience without altering water safety or legal compliance.

How to Systematically Identify Your Water Quality Needs

Begin with simple visual and functional checks, such as watching for mineral deposits or flow reductions. Next, consider a professional laboratory test to accurately measure calcium and magnesium concentrations. Evaluating system capacity against daily household water use helps reveal if current equipment can keep pace. Addressing these steps before selecting treatment ensures the solution fits your specific water conditions rather than relying solely on regional data.

Applying Butte County Aquifer Data to Your Household Well

If your well water’s hardness aligns near the regional median of 232.0 mg/L, your equipment may soon reach or exceed its treatment capacity during high usage. However, values vary widely up to 590.0 mg/L in the area, so your well could be softer or harder. This range highlights the importance of knowing your home's exact water profile to optimize treatment. The Autotrol Complete Well System can be matched to these demands, helping to maintain performance and water quality.

What You Should Not Infer from Butte County Aquifer Sampling Data

The regional data demonstrates that while hardness is consistently detected, no samples exceed federal health thresholds. This means local groundwater meets safety criteria but may present challenges like mineral buildup over time. Importantly, the record does not indicate your well’s specific condition or that treatment is legally required. Only direct testing of your water and an evaluation of household water use can determine if upgrading treatment capacity with a system like the Autotrol Complete Well System is appropriate.

Where this information comes from

Source: USGS groundwater sampling. Sampled 2026-05-13. 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 110SKRV aquifer (Butte County): 183 results from 41 wells, median 232.0 mg/L, range 116.0-590.0 mg/L; none above any federal threshold