Interpreting Lead Measurements from Salt Lake County's Public Water System
When considering lead in your household water, the critical information comes from official sampling data collected by your local water system, the Granger-Hunter Improvement District, which serves Salt Lake County. Government records document a lead 90th percentile level of 0.0019 mg/L as of the most recent sampling date. This value reflects the upper bound of lead concentrations measured across many customer taps, emphasizing it is a distribution and plumbing-based measurement rather than the raw source water lead content.
Importantly, this measured concentration does not indicate a violation or unsafe condition. It is well below the EPA’s action level established to protect public health. Also, the system has no health-based violations on record, indicating compliance with federal standards. However, because lead primarily enters water through household plumbing materials rather than the water source, your home's lead level may differ from this statistical figure.
Implications for Larger or Seasonal Households
If your home accommodates more residents or serves as a secondary or seasonal property, water usage patterns can influence the extent to which lead accumulates in plumbing. Lower water flow or intermittent use may increase contact time between water and lead-containing materials, potentially raising lead levels at the tap. This variability means that measurements from public water systems provide a general background but cannot predict conditions unique to your household’s usage or plumbing.
Additional Considerations for Commercial or Industrial Operators
Operators of businesses or industrial facilities have expanded concerns and regulatory requirements regarding lead concentrations in water. These entities must consider water volume, potential exposure to workers or sensitive processes, and may need more frequent or specialized testing beyond household sampling protocols. Residential households generally focus on personal family safety and aesthetic factors, while commercial users face additional compliance and operational impacts.
Clarifying Terminology: 'Detected,' 'Median,' and 'Range' in Sampling Records
The public water system record reports the "detected" lead concentrations, referring simply to the presence of measurable lead rather than a violation. The 90th percentile is a statistical measure indicating that 90% of samples were at or below 0.0019 mg/L; it does not represent an average or median. The overall range of measurements provides context on variability across all tested locations. Recognizing these terms helps interpret the data properly without overestimating risk.
Effects of Water Treated by the Fleck Lead in Water Filter at the Tap
For households seeking to reduce lead exposure regardless of the water system’s compliance status, the Fleck Lead in Water Filter offers a technology designed to reduce lead concentrations at the point of use. This system ships ready to configure for home plumbing and operates by targeting lead particles and reducing their presence in tap water. With treated water, users can expect lowered lead levels consistent with performance claims documented for this equipment, contributing to added peace of mind.
In summary, Salt Lake County's public water system data shows lead levels well within federal health-based standards, which offers reassurance but does not guarantee your home's water matches these figures. Evaluating your specific household water through testing and considering a treatment device like the Fleck Lead in Water Filter can help manage personal exposure effectively.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2025-12-31. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA SDWIS record for GRANGER-HUNTER IMPROVEMENT DISTRICT (UTAH18007), surface water supply, serving 121083 people: 0 health-based violations of 3 total; lead 90th percentile 0.0019 mg/L