What Public Water System Data Can and Cannot Tell You
Federal monitoring from 2013-2015 in the Meriden Water Division, which serves Berlin, Cheshire, Meriden, Southington, and Wallingford in New Haven County, found some volatile organic compounds (VOCs) detected at low concentrations. These results reflect the public water system as a whole, not individual household taps. Helpfully, no health-based violations related to VOCs were recorded for this system, indicating compliance with federal safety standards.
However, the presence or absence of VOCs in your home's tap water requires specific testing of your water source. This checklist highlights factors relevant to understanding VOCs and their treatment options, focusing on what you can learn from the system record and what requires individual analysis.
1. Why Volatility Matters: Exposure Beyond Drinking
VOCs can enter your body by inhalation and skin contact as well as ingestion
Activities like showering and dishwashing release volatile organics into the air, increasing inhalation and skin absorption routes compared to just drinking water. Understanding this helps weigh treatment approaches since reducing VOCs in water can reduce all routes of exposure.
Shower vapors may carry VOCs due to their volatility
Volatile organics easily evaporate at normal temperatures and can transfer into bathroom air during bathing, a different exposure pathway from drinking.
Household processes influence VOC exposure levels
Using water for cleaning or cooking can volatilize solvent compounds, increasing inhalation and contact risks beyond direct consumption.
2. Why Activated Carbon Systems Are Sized for Contact Time
Granular activated carbon beds remove VOCs by adsorbing molecules during water contact
The effectiveness depends on how long the water remains in contact with the carbon, not just the flow rate. This contact time allows solvent compounds to bind effectively, reducing VOC concentrations.
Longer contact time enhances removal of volatile organics
Fast flow through a carbon bed may inadequately reduce VOC levels. Choosing a system designed for sufficient contact is essential.
Flow rate alone is an insufficient metric for VOC removal performance
Assessing equipment by both flow and media volume ensures better treatment outcomes.
3. Differences Between Aesthetic and Health-Based Standards
EPA secondary standards guide taste and staining concerns, not health risk limits
For VOCs like 1,1-dichloroethane, no federal maximum contaminant level exists, so aesthetic threshold comparisons do not apply.
Detections below health-based limits indicate compliance, not safety issues
The Meriden system had no VOC results exceeding any federal maximum contaminant levels, showing adherence to health guidelines.
Understanding the role of federal monitoring rules helps interpret VOC data
The Unregulated Contaminant Monitoring Rule (UCMR3) sampling reports detections without setting safety limits, aiding awareness but not indicating violations.
4. Which VOCs Were Detected in This Water System Record
1,1-Dichloroethane was detected twice above its reporting level (0.03 µg/L)
The highest concentration reported was 0.08 micrograms per liter (0.08 ppb), with a median detected value of 0.075 µg/L (0.075 ppb).
Chloromethane, bromomethane, HCFC-22, Halon 1011, 1,3-butadiene, and MTBE were not detected above their respective reporting levels
These results indicate these solvent compounds are either absent or below detection thresholds in this system's samples.
No federal maximum contaminant levels exist for these monitored VOCs in this system
Therefore, detection does not imply exceeding limits or safety concerns but confirms presence at trace levels.
5. How the C-Series VOCs & Industrial Chemicals Filter Addresses Solvent Compounds
This system uses granular activated carbon technology sized for sufficient contact time
It adsorbs volatile organic compounds such as 1,1-dichloroethane, effectively reducing these solvent compounds from water by ensuring extended interaction between water and the carbon bed.
Removal efficiency targets VOCs found in the Meriden Water Division system
Given the detected VOC profile, this technology addresses the known constituents documented in federal sampling without relying on unverified product data.
The filter ships ready to configure with household water supplies
No specialized setup is required prior to use, allowing households to incorporate this approach as part of their water treatment solution.
Next Step: Testing Your Household Water for VOCs
To determine the presence and concentration of volatile organic compounds in your individual household water, order a comprehensive laboratory analysis targeting VOCs including 1,1-dichloroethane and others relevant to the Meriden Water Division area.
A result confirming non-detects or concentrations consistent with the public system's monitoring will help you decide if treatment such as the C-Series system is appropriate for your household needs.
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: 168 results across 7 listed contaminants, 2 detections above the reporting level; no federal MCL for these UCMR-listed VOCs