According to U.S. Geological Survey groundwater sampling for the Waupaca County 100SDGV aquifer, manganese was detected in 13 of 21 samples from 14 wells tested between 2011 and 2024. The median concentration was 6.27 micrograms per liter (µg/L), with results ranging from 0.44 to 124.0 µg/L. None of the samples exceeded federal thresholds for manganese.
What additional questions might commercial or industrial operators consider compared to household water users?
Commercial and industrial operations often need to address manganese levels in the context of larger volumes of water, regulatory permitting, and specific water quality criteria for manufacturing or processing. They may ask about manganese's effect on equipment scaling or product quality, and require detailed water chemistry profiles. By contrast, households focus mainly on aesthetic effects like staining or taste and on protecting plumbing and appliances at a smaller scale.
How should households prioritize manganese water checks from simple to laboratory testing?
Begin with visual checks for staining on fixtures or laundry, then observe changes in water taste or clarity. If concerns persist, a certified laboratory test for manganese is the accurate way to determine actual concentrations in your specific well or supply. Laboratory testing also helps differentiate manganese from other metals or minerals that can cause similar symptoms.
What do terms like 'detected,' 'median,' and 'range' mean in manganese groundwater sampling records?
'Detected' means manganese was measured above the laboratory’s reporting limit but does not imply a health or safety violation. The 'median' is the middle value of all samples, representing a typical measurement in the area. The 'range' shows the lowest and highest recorded values, indicating natural variability in groundwater manganese across different wells and depths within the aquifer.
What household water symptoms suggest manganese presence, and which do not?
- Suggest manganese: brown or black staining on sinks, tubs, laundry, or plumbing fixtures; metallic taste; sediment or particulates settling in water.
- Do not suggest manganese: cloudy water from other minerals or sediment unrelated to manganese; unusual odors or colors typically caused by other sources.
How many wells and samples contribute to the manganese data, and what does a smaller sample size imply?
The manganese data for this aquifer come from 21 samples taken at 14 wells of varied depths between 19 and 172 feet. While this provides a useful regional overview, individual well conditions can vary significantly due to local geology, well construction, and water usage. A smaller number of samples means the data represent a snapshot but should be supplemented by testing your own water for accurate assessment.
How does manganese enter groundwater or distribution systems in Waupaca County?
Manganese in this region typically originates from natural mineral deposits leaching into groundwater. Variations in water chemistry, redox conditions, and well depth influence manganese concentration. It can appear in water supplies without indicating contamination or health risk but may affect water aesthetics or plumbing.
In summary, the government sampling record for the Waupaca County 100SDGV aquifer shows manganese presence within federally acceptable limits but with a range of concentrations across sampled wells. Households deciding on treatment equipment should first evaluate their own water through appropriate testing and consider the C-Series Black Manganese Stains Filter, which ships ready to configure and is designed to address manganese-related staining and taste challenges effectively.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2024-09-09. 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 Manganese in the 100SDGV aquifer (Waupaca County): 21 results from 14 wells, median 6.27 ug/L, range 0.44-124.0 ug/L; none above any federal threshold