What Does Pierce County's Perchlorate Water Record Mean Compared to Nearby Areas?
The Firgrove Mutual Inc. public water system in Pierce County, WA, serves over 36,000 people and uses surface water as its supply. Between 2001 and 2005, federal monitoring detected perchlorate presence in this system at levels up to 6.0 micrograms per liter (µg/L), with some detections around 5.5 µg/L. Neighboring counties may show different perchlorate patterns due to variations in water sources and environmental factors. However, these detections provide regional context rather than an individual household’s water condition.
What Seasonal or Multi-Year Patterns Appear in Pierce County's Perchlorate Data?
The perchlorate results come from monitoring conducted between March and July 2002. While these data represent one multi-month period, perchlorate levels can fluctuate seasonally or annually based on surface water changes, weather, and local activities. The absence of more recent data means household water may differ over time, underscoring the importance of individual water testing for current conditions.
What Household Signs Might Suggest Perchlorate Issues, and Which Symptoms Are Unrelated?
Perchlorate is a chemical that can be present in water but does not cause noticeable taste, odor, or staining. Households using water treatment equipment that struggles to keep up, especially with perchlorate, may not see visual or olfactory signs. Symptoms like unusual taste or discoloration usually point to other water issues. Knowing whether perchlorate is present requires specific water testing rather than relying on sensory clues.
How to Interpret the System’s Perchlorate Median and Range as a Homeowner?
In the Firgrove Mutual Inc. system, four out of 24 samples showed perchlorate detections above 4.0 µg/L, with a highest level of 6.0 µg/L and a median detection value of about 5.5 µg/L. These numbers come from a federal survey, not a current compliance test, and are applied system-wide rather than at any individual home. To understand your home's specific perchlorate level, a direct test of your water is necessary. This approach prevents assumptions based on area averages and ensures accurate knowledge of your water quality.
How Does the C-Series Perchlorate Filter Address This Constituent?
The C-Series Perchlorate Filter is designed to reduce perchlorate in household water. It uses a filtration process specifically targeted to remove or neutralize perchlorate compounds, helping water treatment equipment that has difficulty managing this constituent alone. This system ships ready to configure and can support your household’s water needs when existing equipment cannot fully handle perchlorate.
What You Should Not Assume from Area-Level Perchlorate Data
Data showing perchlorate detections in the Firgrove Mutual Inc. water system do not imply individual homes have the same levels or any particular water quality issue. There are no health-based violations recorded for this system, indicating no federally recognized health safety concerns from perchlorate at the system level. Since perchlorate can fluctuate seasonally and regionally, only a home-specific test can reveal your precise water condition. Using these area data responsibly means understanding their scope and limits while exploring filtration options if your equipment cannot keep up.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2002-07-26. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR1 monitoring (2001-2005) for FIRGROVE MUTUAL INC (WA5325200), WA: 24 results across 1 listed contaminants, 4 detections above the reporting level; no federal MCL