Distinguishing Acidic Water from Other Common Water Issues
Acidic water is measured by pH, not hardness or sediment
Acidic water has a pH below neutral (7), indicating a higher hydrogen ion concentration. This differs from water hardness, which relates to minerals, or sediment presence, which is particulate matter.
pH range in Cumberland County's aquifer 112OTSH is mostly below secondary EPA standard
The U.S. Geological Survey sampled groundwater from two wells within aquifer 112OTSH in Cumberland County. Sixteen samples taken between 2010 and 2017 showed a median pH of 5.85, ranging from 5.5 to 6.8 standard units. EPA’s secondary standard for pH is 6.5 to 8.5, which focuses on aesthetics and corrosion potential, not health risks. Fifteen of sixteen samples fell below 6.5, indicating generally acidic conditions in this aquifer.
Preparations for Discussing Water Treatment Options
Obtain a current test of your own water’s pH to confirm acidity
Since USGS data represent area wells, your well or tap water pH may differ. Testing your own water will help determine if acidic conditions exist locally in your household supply.
Record well depth and source type for context
The sampled wells were 22 to 38 feet deep. Knowing your well’s depth and source aquifer provides important information to compare with regional data.
Note any visible effects such as staining or metal taste
Signs including blue-green stains or metallic taste can indicate acidic water interacting with plumbing materials.
Considerations for Different Household Types and Usage Patterns
Larger households may have increased water demand affecting device sizing
Equipment capacity needs rise with more users to maintain flow rate and treatment effectiveness.
Seasonal or secondary homes may require attention to periods of stagnation
Water sitting in pipes can alter pH locally; additional monitoring is advisable.
Interpreting the USGS pH Median and Range for Your Home
Median pH of 5.85 suggests typical water acidity in this aquifer
Half of the samples measured had pH below 5.85, signaling acidic water is common though not universal.
Range from 5.5 to 6.8 indicates variability between wells and over time
Your water could exhibit pH values nearer neutral, but acidic values within this range are supported by regional data.
EPA secondary standard guides aesthetic and material compatibility concerns
Water outside the 6.5 to 8.5 pH range can cause staining or pipe degradation without health risk.
Additional Questions for Commercial or Industrial Operators
Scale and flow requirements differ substantially from residential households
Larger volumes demand more robust treatment configurations and possibly different equipment classes.
Material compatibility and corrosion control may involve regulatory compliance
Businesses might face stricter state or industry standards not applicable to homes.
Summary Checklist
The USGS area sampling shows mostly acidic water in Cumberland County’s aquifer 112OTSH, a factor to consider in household water treatment. Confirm your own water’s pH with testing and document well details before choosing equipment. For acidic water, the Pentair Acidic / Low-pH Water Filter ships ready to configure and can effectively adjust pH to reduce aesthetic and plumbing impacts.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2017-10-05. 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 pH in the 112OTSH aquifer (Cumberland County): 16 results from 2 wells, median 5.85 standard units, range 5.5-6.8 standard units; EPA secondary standard for pH is 6.5-8.5 (aesthetic/corrosivity, not health-based); 15 of 16 sampled results fell below 6.5
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