The EPA record for the Butte Silverbow Water Department, serving Silver Bow County, reports no detections above the federal reporting levels for seven volatile organic compounds (VOCs) tested between 2013 and 2015. This data covers a community water system that draws from surface water for roughly 33,000 people, including roughly 13,000 connections in Butte, Montana.
Why Volatility Matters: Showering, Dishwashing and Inhalation Exposure Versus Drinking Water
Volatile organic compounds, or VOCs, are organic chemicals that easily evaporate into air. Because of this volatility, some exposures happen not only from drinking contaminated water but also through inhaling vapors during activities like showering or dishwashing. The compounds monitored here, such as 1,1-dichloroethane and MTBE, can enter the air inside your home when hot water is used. This means that controlling VOCs in household water can reduce potential inhalation exposure as well as ingestion.
What a Certified Laboratory Test for VOCs Reports and How to Read It
A certified laboratory test for volatile organic compounds in water reports concentrations as micrograms per liter (µg/L), which is roughly equivalent to parts per billion (ppb). Each VOC has a specific reporting level— the minimum concentration reliably measured. For example, the reporting level for 1,1-dichloroethane is 0.03 µg/L and for MTBE it is 5.0 µg/L. Any measurement below these levels is reported as 'not detected.' It’s important to understand that detection means the instrument measured the compound; it does not imply any health violation or that the concentration is unsafe.
How to Compare This Area's VOC Records with a Neighboring County's Without Overreading
Comparisons between Silver Bow County's VOC measurements and neighboring areas should be approached cautiously. Each public water system differs in source type, treatment, and industrial activity impact. The absence of VOC detections in Butte Silverbow’s system reflects its specific water source and treatment practices but cannot guarantee the same for a neighboring county. Careful examination of official test reports and local water source data is necessary before drawing conclusions about relative water quality.
How Sample Depth, Well Depth or Source Type Changes What a Reader Should Expect
In Butte Silverbow’s case, surface water is the supply source, which generally leads to a different VOC profile than groundwater wells. VOC presence often varies with source type: shallower or surface sources may be more susceptible to industrial or urban solvent compounds, while deep wells could have a different contamination pattern. Sampling depth affects VOC detection because some compounds degrade or volatilize at different rates, so test results depend on where and how samples are taken.
How Seasonal or Multi-Year Variation Shows in the Record (Dates and Ranges Given)
The EPA's monitoring spanned roughly from 2001 through 2014 with detailed VOC assessments between 2013 and 2015. During that period, all twelve samples for each VOC showed concentrations below reporting levels, indicating no measurable VOC presence at those times. Seasonal or yearly fluctuations often influence VOC levels due to changes in source water conditions or regional chemical usage; however, this system's records show stable nondetects across multiple years.
Maintenance Rhythm of the Documented Technology in Plain Terms
Households experiencing failure of existing VOC filtration can consider equipment that ships ready to configure, designed specifically for volatile organic compounds and industrial chemical removal. The C-Series VOCs & Industrial Chemicals Filter uses targeted activated carbon and other media to adsorb solvent compounds effectively. Maintenance involves routine filter media replacement on a schedule aligned with household water use and contaminant load, typically every 6 to 12 months, to maintain optimal chemical removal performance.
To clarify your household's VOC water condition, ordering a certified laboratory VOC test from your tap water is essential. This single, comprehensive test measures concentrations for volatile organics including those federally monitored and others relevant locally. A result showing no detected VOCs or concentrations below reporting levels would confirm your water matches the system-wide record and indicate no additional treatment steps for VOCs might be necessary. Conversely, detections above reporting levels would guide appropriate filter selection and maintenance schedules for your safe water management.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2014-04-28. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR3 monitoring (2013-2015) for Butte Silverbow Water Department (MT0000170), MT: 84 results across 7 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level