The U.S. Geological Survey sampled groundwater from wells in Caledonia County's aquifer 112SRFD between 2011 and 2017. They found pH values ranging from 7.9 to 8.2, with a median of 8.05 standard units. These results fall within the EPA's secondary standard range of 6.5 to 8.5 for pH, which relates to aesthetic concerns and corrosivity but does not indicate a health issue. None of the samples showed acid-level pH below 6.5, which is associated with corrosive water.
1. What Changes for a Large Household, Second Home, or Seasonal Property
For larger households, second homes, or properties used seasonally, water corrosivity can differ in impact. Larger homes often have more extensive plumbing networks, increasing the surface area exposed to water with corrosive potential. This could accelerate pipe wear if the water is acidic. Seasonal properties may face additional issues like stagnant water sitting in pipes for extended periods, which can worsen corrosion effects over time. This means while the local aquifer’s pH range suggests generally non-corrosive water, individual household use patterns can influence actual pipe conditions.
2. Household Symptoms That Do and Do Not Point to This Problem
Corrosive water can cause distinctive signs such as frequent leaks, pinhole pipe damage, metallic taste in water, or premature failure of water heaters and faucets. However, symptoms like cloudy water, discoloration due to rust, or staining might also arise from other water quality factors unrelated to pH. Observing corrosion symptoms without confirming water acidity should prompt testing before concluding corrosive water is the cause.
3. The Role of Plumbing Material and Age, Separate from the Source Water
Regardless of source water pH, the type and age of plumbing materials influence corrosion risk. Copper, galvanized steel, and iron pipes can react differently to water chemistry. Older pipes often have mineral or scale buildup affecting corrosion rates. Plastic piping is generally resistant to corrosivity. Therefore, even with the area's aquifer pH in a neutral to slightly alkaline range, household plumbing conditions strongly affect whether corrosion occurs.
4. What 'Detected', 'Median' and 'Range' Mean in the Sampling Record on This Page
The term 'detected' means measurements were made and results recorded; it does not imply a problem or violation. The 'median' is the middle value of the pH results and the 'range' shows the minimum and maximum values observed. Here, all four samples had pH between 7.9 and 8.2, well within the EPA’s aesthetic secondary standard limits. This does not guarantee every well in the area has the same pH but indicates typical groundwater conditions in the aquifer.
5. What to Write Down Before Asking for Treatment Advice
- Well depth, if known (sampled wells were about 116 feet deep in this area)
- Recent water test results with pH and any other relevant chemistry
- Descriptions of any plumbing materials and age of pipes
- Specific household symptoms related to corrosion or water quality
- Water usage patterns, especially if the property is seasonal or large
6. How pH Levels Enter Groundwater in This Region
The pH of water in Caledonia County’s aquifer 112SRFD is influenced by natural geological formations and aquifer chemistry. The slightly alkaline pH values reflect the buffering capacity of minerals in the aquifer matrix, which neutralizes acids and reduces corrosivity. Unlike acidic groundwater affected by industrial pollution or acid rain, this aquifer maintains a balanced pH conducive to protecting pipe materials under normal conditions.
In summary, government data indicates that the typical pH in Caledonia County’s aquifer 112SRFD is within a non-corrosive range. However, actual corrosive effects in a household depend on individual water testing, plumbing materials, and usage patterns. For households assessing pipe damage risk, documenting these details and considering a water conditioning option such as the Fleck Corrosive Water Damaging Pipes Filter, which ships ready to configure, can provide tailored protection.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2017-06-14. 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 112SRFD aquifer (Caledonia County): 4 results from 1 wells, median 8.05 standard units, range 7.9-8.2 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
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