If you notice a metallic taste in your water but lack severity information
The water supply for households drawing from aquifer 112DFSF in FIPS area 180, Connecticut, comes from wells ranging from 10 to 80 feet deep. Government groundwater sampling by the U.S. Geological Survey in this area found manganese consistently detected in all samples from 19 wells over 2015 to 2025. Median manganese concentration was 8.7 micrograms per liter, with a range from 0.0 to 9140.0 micrograms per liter. Importantly, none of these manganese measurements exceeded any federal safety thresholds. This sampling describes regional water quality and does not indicate the manganese concentration in any individual household’s water supply.
If your household experiences a metallic taste but no other obvious water issues
The presence of manganese in water can contribute to an unpleasant metallic flavor, even at low levels that do not exceed health-based limits. Households with metallic taste but no staining or discoloration are likely encountering manganese concentrations in the lower to mid-range of the regional sampling. The Autotrol Metallic-Tasting Water Filter is designed to reduce manganese and other metal-related tastes, improving water palatability while shipping ready to configure for your household’s system.
If you wonder whether iron or other constituents cause the metallic taste instead
Metallic taste in water can stem from various metals, including manganese and iron. However, iron commonly causes visible reddish stains, which manganese does not necessarily produce. The U.S. Geological Survey data for aquifer 112DFSF focus on manganese because of its known influence on taste and appearance. Without testing your water directly, it is not possible to distinguish if manganese or other metals cause the taste. A targeted water test measuring manganese and iron will clarify the specific cause in your household.
If you notice changes in metallic taste over seasons or multiple years
The U.S. Geological Survey sampling between mid-2015 and late 2025 shows wide variability in manganese levels across different wells and times in aquifer 112DFSF, from undetectable up to 9140 micrograms per liter. This suggests the possibility of seasonal or annual fluctuations in manganese concentrations. Households may experience stronger or milder metallic taste at different times due to such variation. Ongoing monitoring or repeated testing can document these changes and guide treatment needs.
If you want to compare your area's manganese record with neighboring counties
When reviewing manganese data from nearby counties or aquifers, consider differences in sampling depth, time periods, and geology. Aquifer 112DFSF’s manganese median and range reflect local conditions distinct from neighboring aquifers. Comparing records can help identify if manganese presence is typical regionally or shows unique spikes locally. However, individual well water quality must be verified by direct testing rather than relying solely on area data.
If you operate a commercial or industrial facility using aquifer 112DFSF water
Commercial or industrial users will need additional details beyond residential considerations, such as regulatory compliance limits, treatment system capacity, and impact on processes or equipment. These questions require more comprehensive water analysis and treatment design specific to operational needs. Residential-focused options like the Autotrol Metallic-Tasting Water Filter address taste and clarity primarily for household use.
The key step for any household facing metallic taste is to conduct a water test measuring manganese concentration in your own supply. A confirmed result will indicate if the manganese levels align with regional data and whether treatment such as the Autotrol Metallic-Tasting Water Filter may improve water taste.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2025-11-21. 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 112DFSF aquifer (FIPS 180): 71 results from 19 wells, median 8.7 ug/L, range 0.0-9140.0 ug/L; none above any federal threshold
- ✓ 90-Day Money-BackNo restocking fees — return within 90 days.
- ✓ Manufacturer WarrantyGenuine Fleck · Pentair · VIQUA equipment.
- ✓ Free Expert SizingTalk to a specialist and buy the right system the first time.