If your water fixtures have a sour or metallic taste, low pH might be involved
Test results from a certified laboratory for water pH provide a numeric measure of acidity or alkalinity expressed in standard units. pH values below 7 indicate acidity, with values farther below suggesting stronger acidity. In the Navajo County aquifer 220NAVJ, 82 samples collected from 14 wells over nearly a decade report a pH range spanning from 6.4 to 10.0 standard units. The median is 9.1, indicating that most water in this area tends to be alkaline. Only 1 of these samples dipped below the EPA secondary standard threshold of 6.5, which is set to guide aesthetics like taste and plumbing effects but is not a health-based limit. A laboratory pH report also includes testing methods and detection limits but never declares water safe or unsafe based solely on pH.
If you rely on private well water, your pH test is the only definitive measure for your home
Government sampling in Navajo County aggregates data from multiple wells of various depths, ranging from 554 to 3737 feet deep. These results characterize the regional aquifer but do not determine specific water conditions at an individual household. Private well water must be tested individually to establish its exact pH level. Public aquifer records indicate general trends, not household specifics, so they should help inform the decision to test private water rather than replace it. Local well characteristics, casing, and plumbing all influence final tap water pH.
If you experience corroded fixtures, blue-green staining, or metallic taste, acidic water may be a factor but confirmation is essential
Common signs that suggest acidic water include etching or pitting in sinks and faucets, premature fixture wear, or unusual metallic flavors during drinking and cooking. However, these symptoms can also result from other water quality issues. Because acidic water impacts plumbing and usage differently depending on its pH level and composition, only precise testing can confirm if acidic water is the source of household concerns. Symptoms alone do not identify whether a treatment class or system is necessary.
If acidic water is confirmed, the Pentair Acidic / Low-pH Water Filter offers neutralization to reduce corrosivity effects
The Pentair System is designed specifically to address low-pH water conditions by treating water to raise the pH closer to a neutral range. This process utilizes neutralizing media that increase alkalinity and buffer corrosive effects, protecting plumbing and improving taste. It ships ready to configure for residential setups without specialized tools. This technology works by counteracting acidity rather than filtering for particulates or chemical contaminants. For homeowners considering treatment options, this product provides a targeted solution when low pH is documented by testing.
If you suspect acidic water, start with a visual inspection, then conduct a laboratory pH test of your own water supply
Begin by noting any signs such as staining, corrosion, or taste irregularities. If these suggest acidic water, the next step is to collect a water sample and send it to a certified laboratory for pH analysis. Field test kits are not precise enough for treatment decisions. Laboratory results will confirm if the water falls below the aesthetic pH range recommended by federal guidelines. With this information, you can decide whether the Pentair Acidic / Low-pH Water Filter or another approach is appropriate for your home.
The data referenced here come from 82 groundwater samples taken from 14 wells in the Navajo County aquifer 220NAVJ, collected from 2010 through 2019 by the U.S. Geological Survey. These measurements characterize regional water chemistry and serve as a foundation for understanding local water quality trends. For more detailed data and updates, please consult the U.S. Geological Survey water data portal directly.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2019-08-23. 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 pH in the 220NAVJ aquifer (Navajo County): 82 results from 14 wells, median 9.1 standard units, range 6.4-10.0 standard units; EPA secondary standard for pH is 6.5-8.5 (aesthetic/corrosivity, not health-based); 1 of 82 sampled results fell below 6.5