If your lab report lists 1,1-dichloroethane or other VOCs detected in your water
Water test results for VOCs, or volatile organic compounds, often include the names and concentrations of specific solvents or chemical compounds found in the sample. For Montgomery County water supplied by Aqua PA - Main System, EPA monitoring data from 2013 to 2015 showed occasional detection of 1,1-dichloroethane in 7 out of 52 samples, ranging from 0.03 to 0.138 micrograms per liter (µg/L), equivalent to parts per billion (ppb). Other VOCs such as chloromethane, bromomethane, HCFC-22, Halon 1011, 1,3-butadiene, and MTBE were monitored but not detected above their respective reporting levels in this system. It's important to note that these findings are system-wide measurements and do not specify the levels in any individual household's water.
If you want to understand why volatility influences water use exposure risks
Volatile organic compounds are chemical compounds that easily vaporize at room temperature. This volatility means that aside from ingestion through drinking water, VOCs can also enter the body through inhalation and skin contact, especially during activities like showering, bathing, and dishwashing. When water containing VOCs is heated or agitated, some compounds can evaporate and be inhaled with steam or absorbed through the skin, presenting different exposure routes compared to drinking alone. Therefore, understanding volatility is key to evaluating potential health risks and considering treatment options for household water.
If you want to differentiate between secondary aesthetic standards and health-based limits for VOCs
The Environmental Protection Agency (EPA) distinguishes between primary standards, which protect health, and secondary standards, which address aesthetic qualities such as taste, odor, and staining. For VOCs like 1,1-dichloroethane, no federal maximum contaminant levels (MCLs) have been established under the Unregulated Contaminant Monitoring Rule (UCMR) data. The secondary standards may include threshold values for compounds affecting taste or smell, but exceeding these does not indicate a health violation. The Aqua PA system had two health-based violations on record unrelated to VOCs, indicating that VOC detections themselves do not imply unsafe water.
If you want to determine whether your household's treatment needs match daily water demand
When considering treatment for VOCs, it’s important to assess the volume of water your household uses daily. Treatment systems designed to reduce VOCs typically have capacity ratings based on gallons per day or the total volume of water treated before maintenance is needed. For a typical Montgomery County residence, matching a system's capacity with household water usage ensures effective performance. It helps avoid situations where treatment components become saturated and less effective against VOCs. Knowing your daily water use allows you to select a system appropriately sized for your household needs.
If your household is larger, a seasonal residence, or a second home
Households with more residents use more water and thus require treatment systems with larger capacities or more frequent maintenance to manage VOCs effectively. Seasonal or second homes may have periods of inactivity when water sits in pipes, potentially impacting VOC concentrations due to changes in water chemistry or stagnation. In these cases, additional precautions or system features may be necessary to maintain water quality when reoccupied. Planning treatment with these factors in mind supports consistent water quality regardless of household size or occupancy patterns.
If you want to interpret the terms 'detected', 'median', and 'range' in the government sampling records
In the Aqua PA monitoring data, 'detected' means that the instruments measured the presence of a compound above a reporting level, not that it is a violation or unsafe level. The 'median' of detections is the middle value among the detected concentrations, showing the typical measurement when present. The 'range' shows the lowest to highest detected values, revealing variability over sampling events. Understanding these terms clarifies that detection is informational rather than a compliance status and helps contextualize what to expect in water quality reports.
In summary, Montgomery County's public water system monitoring found occasional low-level detections of 1,1-dichloroethane and no detections above reporting levels for other monitored VOCs. Volatility of these compounds means inhalation and skin exposure are relevant alongside drinking ingestion. Differentiating between aesthetic and health standards clarifies that these detections do not indicate unsafe water. Evaluating household water use and residence type helps choose appropriate treatment solutions. The Pentair VOCs & Industrial Chemicals Filter ships ready to configure and addresses VOC concerns effectively for residential water treatment needs.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2013-10-31. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR3 monitoring (2013-2015) for Aqua PA - Main System (PA1460073), PA: 363 results across 7 listed contaminants, 7 detections above the reporting level; no federal MCL for these UCMR-listed VOCs
- ✓ 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.

