Fleck Acidic Water + Hard Water (Well) System

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How pH Levels Reflect Groundwater Conditions in Darke County

Groundwater in aquifer 112OTSH, serving parts of Darke County, Ohio, shows a pH range from 6.9 to 7.9 standard units based on U.S. Geological Survey samples collected between 2011 and 2020. This range indicates water that is mildly acidic to slightly basic, falling well within the EPA’s secondary standard range of 6.5 to 8.5. Because pH values influence water’s corrosivity and how it interacts with household plumbing and fixtures, understanding these results aids in assessing the need for balancing acidic conditions along with hardness issues.

Seasonal and Multi-Year Trends in pH Measurements

The USGS data spans nearly a decade, covering six samples from two wells taken over different years and seasons. The median pH value is 7.2, with a minimum recorded pH of 6.9 and a maximum of 7.9 across this time. This variability suggests that while pH levels are stable within moderate limits, periodic fluctuations likely occur due to natural environmental factors affecting groundwater chemistry. These shifts are not uncommon and should be expected when evaluating treatment needs that address acid and hardness levels together.

Sample Size and Implications for Water Quality Assessment

The pH results are based on a relatively small sample set—six measurements from two wells in Darke County’s aquifer 112OTSH. While these results offer a useful regional snapshot, a sample of this size limits how precisely water quality conditions can be generalized to every individual household’s well water. It underscores the importance of private testing to determine the exact pH and hardness your household experiences compared to area-wide data.

Sample Depth and Source Type Affecting Expected Water Characteristics

The wells sampled were shallow, between 19 and 24 feet deep. Water drawn from such depths may differ in chemistry compared to deeper wells or surface water sources, potentially affecting acidity and hardness levels. Residents drawing from deeper or alternative sources in Darke County may observe water characteristics that vary from the reported pH range. This difference highlights that the aquifer 112OTSH data provides guidance but does not define individual household water quality.

Evaluating Household Demand Against Treatment Capacity

For households whose current equipment is not keeping pace with rising acid and hardness challenges, evaluating treatment capacity is crucial. The Fleck Acidic Water + Hard Water (Well) System offers a grain capacity of 32,000, designed to handle typical residential daily water volumes. Considering your household’s water use patterns and hardness levels, this system ships ready to configure and can supplement existing equipment to better address acid and hardness simultaneously.

What Area Water Data Should Not Be Taken to Mean

Darke County’s groundwater pH data reflects regional conditions averaged from a limited number of wells and time points and is not a direct indication of any single household’s water quality. The absence of pH values below 6.5 in these samples indicates generally non-acidic water on average, but individual wells can vary. Likewise, the detection of particular conditions does not imply health risks or violations. Homeowners should obtain water testing specifically for their property to confirm acid and hardness levels prior to selecting or upgrading treatment equipment.

Where this information comes from

Source: USGS groundwater sampling. Sampled 2020-07-30. 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 (Darke County): 6 results from 2 wells, median 7.2 standard units, range 6.9-7.9 standard units; EPA secondary standard for pH is 6.5-8.5 (aesthetic/corrosivity, not health-based); 0 of 6 sampled results fell below 6.5