The publicly available water quality record for the Silverdale Water District 16 in Kitsap County, WA, shows that perchlorate was not detected above the reporting limit in all 27 measurements taken from 2003 to 2005 under the EPA's Unregulated Contaminant Monitoring Rule. This groundwater-sourced system, serving over 35,000 people, has no health-based violations recorded.
If You Want to Compare Kitsap County Data with Neighboring Areas
It is important to view these perchlorate monitoring results as specific to the Kitsap County public water system sampled rather than a general regional standard. Neighboring counties may have different water sources, geological characteristics, and industrial influences affecting perchlorate occurrence. Simply comparing numbers without considering these factors risks overinterpreting or misapplying the data to your household's water.
If You Are Considering the Effect of Your Household Plumbing on Perchlorate Levels
Perchlorate presence in water is generally related to source water quality rather than plumbing materials or the age of pipes. Unlike some substances which can leach from older or certain types of pipes, perchlorate originates from environmental contamination of groundwater or surface water. Therefore, plumbing does not materially affect perchlorate concentration in your tap water.
If You Want an Example of How to Read the System’s Median and Range Data
For this water system, all tested samples showed perchlorate below the 4.0 micrograms per liter reporting level, meaning no sample was detected above that value. The median and range values reported effectively represent non-detects across the monitoring period. As a homeowner, this means perchlorate was not found at measurable levels in this public supply during those tests, but this does not guarantee that every home’s water is identical since private wells or other sources may differ.
If You Need Clarification on 'Detected', 'Median', and 'Range' in This Record
- Detected: Perchlorate was not detected above the reporting threshold of 4.0 micrograms per liter in any sample. Detection means measurement by an instrument, not a safety or violation determination.
- Median: The middle value of all measurement results; here it reflects non-detects since all results were below reporting levels.
- Range: Shows the lowest to highest values measured, also indicating no detectable perchlorate in samples.
These terms describe measurements from the public water system over multiple samples and do not provide direct information about any individual household’s water without a specific test.
If You Plan to Ask About Treatment or Equipment for Perchlorate
Before seeking tailored advice, document the following about your water source and conditions:
- Whether your home receives water from the public system or a private well
- Any available recent test results specific to your home’s tap water
- Information about your water source type (groundwater, surface water, etc.)
- Awareness that region-wide data may not reflect your individual water quality
With these details, professionals can better evaluate if a perchlorate filtration option like the C-Series Perchlorate Filter system, which ships ready to configure for home water treatment, is suitable for your household needs.
What Not to Conclude from This Area's Perchlorate Data
The absence of detectable perchlorate in this public water system record does not guarantee that your household water is free from perchlorate or that no other areas nearby have measurable levels. It also does not indicate a violation or safety concern based on federal standards, as no maximum contaminant level (MCL) for perchlorate currently exists. Testing your own water remains essential for precise understanding and treatment decisions.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2003-12-30. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR1 monitoring (2001-2005) for SILVERDALE WATER DIST 16 (WA5379300), WA: 27 results across 1 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level