Government sampling of the New Jersey American - Elizabethtown public water system, serving Elizabeth City and Monroe Township in Union County, from 2001 to 2005, detected no perchlorate above the reporting level of 4.0 micrograms per liter (µg/L) in 40 tests.
How Water Changes at the Tap with Perchlorate Treatment Technology
When the C-Series Perchlorate Filter system is used in a household, the water delivered after filtration contains reduced perchlorate levels compared to untreated water. This system is designed to specifically address perchlorate, a chemical that can affect the thyroid by interfering with iodine uptake. Using the filter results in water with perchlorate concentrations lowered below the measurement threshold, which can help alleviate concerns about this contaminant in residential water.
Maintenance Rhythm of the C-Series System in Household Use
The C-Series Perchlorate Filter ships ready to configure for home use, requiring periodic maintenance to ensure continuous effective performance. Typically, filter components are replaced according to manufacturer guidelines based on volume of water treated and time elapsed. This maintenance schedule helps maintain optimal perchlorate reduction without the need for complex service visits.
Differences Between Public Water System Records and Private Well Testing
The government data referenced applies specifically to the New Jersey American - Elizabethtown public water system, which supplies surface water to over 600,000 people, including Elizabeth City and Monroe Township areas. These results do not indicate the specific perchlorate levels in any individual household’s private well. Private well water should be tested separately to determine perchlorate presence and quantity since such wells draw from different water sources not covered in public system monitoring.
Why Aesthetic Secondary Standards Are Different from Health-Based Limits for Perchlorate
Perchlorate does not have a federal maximum contaminant level (MCL) established, meaning no formal health-based regulatory limit governs its concentration in water systems. Some secondary guidelines exist for taste or general water quality, but these do not reflect health risks. Government monitoring records report detections and levels without equating them to safety violations or health threats.
Understanding 'Detected', 'Median', and 'Range' in Sampling Records
In the government record for this water system, the term 'detected' refers to perchlorate measurements above the instrument’s reporting threshold of 4.0 µg/L. None of the 40 samples showed perchlorate detected above this level. 'Median' and 'range' describe the central tendency and spread of all measurements, which in this case means no significant perchlorate presence was measured during the monitoring period.
Overall, the public water system monitoring data for Elizabeth City and Monroe Township within Union County from 2001 to 2005 show no perchlorate detected above the reporting level, with no health-based violations recorded. For more details, the EPA's Safe Drinking Water Information System public records provide the official source information.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2001-12-27. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR1 monitoring (2001-2005) for NEW JERSEY AMERICAN - ELIZABETHTOWN (NJ2004002), NJ: 40 results across 1 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level

