Distinguishing Nitrate from Commonly Confused Water Constituents
Nitrate is often mistaken for other nitrogen-based compounds like nitrite or ammonia, but it has distinct characteristics and implications. Unlike nitrite, which is less commonly found in groundwater, nitrate frequently appears due to agricultural runoff or septic system influence. It is important to treat nitrate specifically because of its recognized federal health benchmark, the Maximum Contaminant Level (MCL) set at 10.0 mg/L. This differs notably from other nitrogen forms, which are regulated differently or primarily affect water aesthetics rather than health.
Influence of Plumbing Materials and Age on Nitrate Levels
While plumbing materials and the age of a home can affect certain water quality aspects, such as the presence of metals or microbial growth, they generally do not influence nitrate concentrations. Nitrate originates predominantly from the groundwater source itself, particularly in shallow wells or aquifers with agricultural interaction. Thus, concerns about nitrate require attention to source water conditions rather than internal plumbing factors.
Interpreting 'Detected,' 'Median,' and 'Range' in Area Nitrate Sampling
The U.S. Geological Survey conducted groundwater sampling from 2011 to 2018 in Orangeburg County's aquifer 111SANDD, analyzing 16 nitrate results from seven wells. 'Detected' indicates the presence of nitrate in all samples, with none below the reporting limit. The 'median' value of 16.1 mg/L represents the midpoint concentration among samples, and the 'range' spans from 0.074 to 89.8 mg/L, showing variability. Importantly, 10 results exceeded the federal MCL of 10.0 mg/L, a health-based standard. However, these figures represent area-wide data and are not specific to any individual well or tap water source.
Potential Consequences of Untreated Elevated Nitrate Exposure Over Time
Long-term consumption of water containing nitrate above the federal MCL may pose health concerns, particularly for infants under six months and pregnant women. Elevated nitrate can interfere with the blood's ability to carry oxygen, potentially leading to conditions like methemoglobinemia. For other populations, the risks are less clear but warrant cautious management. Therefore, addressing nitrate in household water is a prudent step when testing indicates levels of concern.
Removal of Nitrate Using a Specialized Pentair System
To reduce nitrate levels, the Pentair Nitrate & Nitrite (Well) Filter offers a targeted solution. The system employs media designed to remove nitrate and nitrite ions effectively before water reaches household taps. It ships ready to configure without the need for professional intervention. Choosing this approach addresses the root nitrate content measured in the water source, providing peace of mind for residential water users assessing treatment options.
This summary reflects nitrate sampling of groundwater in Orangeburg County's aquifer 111SANDD, based on U.S. Geological Survey data from wells sampled between 2011 and 2018. For further detailed information, consult the government source at the USGS water data site.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2018-11-05. 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 Nitrate in the 111SANDD aquifer (Orangeburg County): 16 results from 7 wells, median 16.1 mg/L, range 0.074-89.8 mg/L; 10 above a health-based federal MCL (federal MCL 10.0 mg/L)