Reading a Certified Laboratory Report for Manganese
When you receive a certified water test for manganese, the report provides a concentration usually expressed in micrograms per liter (ug/L) or parts per billion (ppb). For samples taken from Waupaca County's aquifer 100SDGV, government monitoring from 2011 through 2024 shows manganese levels ranging from 0.44 to 124.0 ug/L, with a median value near 6.27 ug/L. A key point is these results come from multiple wells in the area and represent general aquifer conditions, not your specific well. No federal health-based limits were exceeded in these samples, meaning manganese presence was within the range considered acceptable by regulatory authorities for drinking water.
Certified lab reports also include detection limits. Some results may be reported as below detection or reporting limits, indicating manganese was measured at low or undetectable levels for those particular samples. Remember, detecting manganese is common and does not by itself indicate unsafe water.
Sources of Manganese in Waupaca County Groundwater
Manganese naturally occurs from the weathering and erosion of rock minerals in the area surrounding Waupaca County. The aquifer 100SDGV, which supplies groundwater at depths ranging from around 19 to 172 feet in sampled wells, can dissolve manganese compounds into the water as it moves through soil and rock layers. Human activities generally have limited direct influence on manganese concentrations here, as these are primarily geologic in origin. Groundwater flow patterns and the geochemical environment (such as oxygen levels and pH) affect how much manganese is present in any given well.
Recognizing Manganese-Related Water Problems at Home
Households experiencing manganese challenges often notice water discoloration, ranging from faint yellow to dark brown stains, especially on bathroom fixtures, laundry, and plumbing surfaces. Manganese can cause staining similar to iron but typically forms black or dark deposits. However, these signs alone do not confirm manganese as the cause; other factors can cause stains or discoloration. Taste or odor may not be strongly affected by manganese at levels found in Waupaca County aquifers. If your previous treatment equipment failed to address these symptoms, it is important to verify the specific cause with a laboratory test of your own water supply rather than assuming manganese as the culprit.
First Fixtures and Appliances to Show Effects
Manganese deposits tend to accumulate in appliances where water is heated or exposed to air, such as water heaters and washing machines. Bathroom sinks, bathtubs, and toilets may also display staining from manganese deposits. These fixtures are typically the first to show visual signs because the oxidized manganese particles settle or cling to surfaces over time. Spotting these symptoms early is useful for deciding when to consider filtration or treatment options that specifically target manganese removal.
Interpreting the Local Record: Median and Range in Waupaca County
The median manganese level of 6.27 ug/L in the aquifer 100SDGV provides a central tendency estimate for manganese concentrations in area wells, meaning half the samples measured above this value and half below. The range from 0.44 up to 124.0 ug/L indicates there is variation across different locations and depths. Some wells had manganese below reporting limits, illustrating that manganese is not uniformly present at measurable concentrations. Recognizing this variability underscores the importance of obtaining a current, site-specific water test to understand your household’s actual manganese concentration rather than relying solely on regional data.
Addressing Manganese After Equipment Failure
With an existing manganese treatment system no longer functioning effectively, the priority is to evaluate your water’s current manganese concentration through laboratory analysis. The C-Series Black Manganese Stains Filter is designed to address manganese deposits seen in households by reducing manganese particles before they cause staining or buildup. It ships ready to configure with your plumbing setup and provides a targeted approach for households in Waupaca County’s aquifer 100SDGV area where manganese has been documented. Using local data as context and specific test results from your water supply will guide the appropriate use of such treatment equipment.
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