Seasonal and Multi-Year Variation in Stevens County's pH Record
The Data Source and Its Timeframe
The U.S. Geological Survey sampled groundwater in Stevens County's aquifer N100HGHPLN on May 12, 2015. Four pH results from a single well at 545 feet depth provide the record for this area.
Record Range and Median
The pH values ranged narrowly from 7.4 to 7.9 standard units, with a median of 7.4. None of these values fell below 6.5, the EPA secondary standard lower bound for pH.
Implications of Limited Variation
This limited variation over a single sampling day reflects stable pH conditions in this portion of the aquifer at the time of sampling. It does not indicate broader seasonal or year-to-year fluctuations.
Differentiating Acidic Water From Related Water Quality Concerns
Acidic Water Defined by pH
Water with a pH below 6.5 is generally classified as acidic and can cause corrosion or metal leaching in household plumbing. The Stevens County data do not indicate acidic water in the sampled locations.
Commonly Confused Issues: Hardness and Iron
Unlike acidic water, hardness relates to dissolved calcium and magnesium and iron results in staining or metallic taste. These are separate issues not measured or addressed in this pH-focused record.
Household Indicators Relevant to Acidic Water
Signs That May Reflect Low pH Water
Visible corrosion on pipes, blue-green stains from dissolved copper, or metallic taste may suggest acidic water presence in a home.
Symptoms Not Indicative of Acidity
Lathering problems, cloudy water, or hardness scale buildup are unrelated to low pH and should prompt testing for other constituents.
Considerations for Larger or Seasonal Properties
Water Quality Stability in Seasonal Use
Seasonal homes may experience less frequent water flow and stagnation that can affect water chemistry differently than continuously occupied homes.
Volume and Demand Impact
Larger households or multiple bathrooms increase daily water use, influencing treatment system sizing and effectiveness.
Assessing Treatment Capacity for Household Needs
Estimating Daily Water Use
Calculate household water demand based on number of occupants and typical usage to select appropriate treatment capacity.
Matching Treatment to Water Characteristics
Since Stevens County aquifer pH values are within EPA secondary standards, treatment needs focus on observed household conditions rather than broad area data alone.
Fixtures and Appliances Affected First by Acidic Water
Metal Plumbing Components
Corrosion usually begins in copper or galvanized pipes and fixtures, potentially causing leaks and staining.
Water Heaters and Appliances
Acidic water can accelerate degradation of water heaters and appliances using water, shortening their lifespan.
Closing Notes on Stevens County pH Data and Next Steps
The pH range recorded by the U.S. Geological Survey in Stevens County's aquifer N100HGHPLN reflects conditions sampled at one well on a single day and does not establish the pH of individual household water supplies. Testing of your own well water is necessary to determine actual acidity and treatment needs. For detailed government groundwater data, visit the U.S. Geological Survey website.
For residential acidic water treatment, the Fleck Acidic / Low-pH Water Filter ships ready to configure and is designed to address low-pH water issues effectively.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2015-05-12. 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 N100HGHPLN aquifer (Stevens County): 4 results from 1 wells, median 7.4 standard units, range 7.4-7.9 standard units; EPA secondary standard for pH is 6.5-8.5 (aesthetic/corrosivity, not health-based); 0 of 4 sampled results fell below 6.5