Government monitoring of the Meriden Water Division system, serving Berlin, Cheshire, Meriden, Southington, and Wallingford in New Haven County, CT, detected chromium-6 in most samples but at levels below any federal safety limits.
Understanding How Chromium-6 Differs from Other Metals
Chromium-6 is a specific form of chromium separate from total chromium measures
Chromium-6 refers specifically to hexavalent chromium, which is measured separately from total chromium in water. Total chromium includes all forms and has an EPA maximum contaminant level (MCL) of 100 micrograms per liter (µg/L). Chromium-6, however, currently has no federal MCL, so detection levels indicate presence but are not legal limits or violations.
This differs from lead or iron, which are regulated differently
Unlike some metals with established MCLs and routine compliance testing, chromium-6 monitoring in New Haven County comes from a federal unregulated contaminants monitoring rule, providing occurrence data rather than regulatory compliance results.
Assessing Whether Treatment Capacity Meets Household Water Use
Compare your average daily water consumption to filtration system specifications
To address chromium-6 levels detected in the region, consider the volume of water your household uses daily relative to the capacity of filtration technologies like the Pentek Chromium-6 Filter. Sufficient treatment capacity ensures consistent reduction of chromium-6 throughout routine household activities.
Understand that flows and water use patterns affect treatment efficiency
Higher household water use or peaks in demand may require multiple filters or higher capacity systems to maintain treated water quality without compromising flow or filter lifespan.
What to Expect from Water After Use of the Pentek Chromium-6 Filter
Reduction of chromium-6 to lower levels at the tap
The Pentek Chromium-6 Filter uses targeted media to reduce chromium-6 concentrations detected in regional water supplies, improving water quality for daily household use.
Improvement in water taste and clarity without altering essential minerals
While chromium-6 is addressed, the treatment system preserves beneficial mineral content to maintain the overall taste and composition of your household water.
Comparing New Haven County’s Chromium-6 Data with Neighboring Areas
Meriden Water Division data shows detections in most samples but with relatively low concentrations
Between 2013 and 2015, chromium-6 was detected above the reporting level in 37 of 43 samples, with a median detected concentration of 0.14 µg/L and a highest measured concentration of 0.3 µg/L.
Avoid extrapolating this data to individual homes without specific testing
Data for the public water system represents system-wide monitoring, not specific domestic water quality, so household testing is the only way to know individual chromium-6 levels precisely.
Interpreting the Meaning of 'Detected,' 'Median,' and 'Range' in This Context
'Detected' means the substance was measured above the minimum reporting level, not that it is harmful
Chromium-6 detections simply indicate measurement above 0.03 µg/L, not compliance issues.
'Median' describes the middle value of detected levels, providing a central tendency for samples with detections
For chromium-6, the median detected level of 0.14 µg/L means half of the detections were below and half above this value.
'Range' shows the spread from the lowest detected to the highest
The range of 0.03 µg/L to 0.3 µg/L reflects variability in concentrations found in the system samples over the monitoring period.
Seasonal and Multi-Year Variation in Chromium-6 Levels in the Meriden Water Division
Sampling occurred over nearly two years from January 2013 to December 2014
The data includes multiple samples through different seasons, indicating variability but no consistent upward or downward trend.
Fluctuations reflect changes in source water and treatment processes rather than immediate local events
Chromium-6 levels can vary naturally in surface water sources due to environmental factors impacting raw water quality over time.
These findings come from the EPA’s Safe Drinking Water Information System for the Meriden Water Division public water system, covering multiple towns within New Haven County. For detailed data and updates, consult the official EPA database on unregulated contaminants monitoring.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2014-12-16. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR3 monitoring (2013-2015) for Meriden Water Division (CT0800011), CT: 87 results across 2 listed contaminants, 50 detections above the reporting level; no federal MCL for hexavalent chromium; total chromium MCL 100 ug/L
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