1. What Public Water System Measurements Indicate and What They Do Not
The water quality data available for Daviess County’s public water supply, specifically the E DAVIESS CO WATER ASSOC INC system serving over 11,900 people, comes from government-required sampling of groundwater sources and distribution lines. This data includes counts of health-based violations recorded by the EPA, but it does not measure water quality at individual taps or inside homes. For example, the system has three health-based violations on record, signifying areas where federal standards were not met systemwide. However, this does not imply that each household’s water is affected or unsafe.
Another important point is that the lead concentration figure cited, the 90th percentile at 0.00361 mg/L, reflects lead levels detected in plumbing samples from the distribution network, not the raw groundwater source. This concentration is a statistical value showing the upper range of samples; it does not directly diagnose water quality at any one home.
2. How to Read Median and Range Data: A Household Perspective
While the system data provide a snapshot, as a homeowner, you should understand the limits of its scope. Median values indicate the mid-point in a range of measurements, meaning half the tested points were higher and half lower. The range shows the span between the lowest and highest values detected. This helps identify if contamination levels can fluctuate widely within the system.
Such data can guide expectations about water quality trends in your area but cannot replace testing your own supply. Notably, a value below a federal health threshold does not guarantee all water is consistently below that level, nor does a detection above the secondary aesthetic standard imply a health risk.
3. Sample Size and Its Implications for Reliability
The Daviess County water system’s data comes from multiple samples collected at various sites, including groundwater wells and distribution points. The large number of connections—over 5,700—means sampling covers a diverse area, but the number of samples may not reflect all potential variations or transient changes.
A small or limited number of samples can lead to less precise assessments of water quality. Therefore, homeowners should be aware that system-wide data may miss localized problems affected by plumbing condition or other factors unique to their premise.
4. Fixtures and Appliances Most Sensitive to Water Quality Variations
In a household, water quality issues often become apparent first in fixtures that directly affect drinking water safety, such as kitchen faucets and ice makers. Appliances that process or dispense water, like water dispensers or coffee makers, may also show early signs of water quality fluctuations.
Because water quality can vary within plumbing, problems can arise from the home’s own pipes or fittings. Issues identified in public system data may not manifest equally at all taps. This makes awareness of where problems are most likely critical for household water safety.
5. Key Information to Document Before Seeking Treatment Solutions
Before pursuing water quality solutions, it is important to record current water conditions observed at home: taste, odor, discoloration, staining, or any unusual sediment. Also note any recent equipment failures or changes in water flow.
Having your own water test results is essential. This should include testing for contaminants of concern identified in the area’s public system data to determine if similar conditions exist in your household supply.
Final Step: The One Test That Provides Clear Answers
The definitive way to know if your home’s drinking water is safe is to conduct a comprehensive water quality test specific to your household’s supply. This test should measure contaminants of interest, including lead and any other parameters relevant to Daviess County’s public water quality history.
Once you have confirmed your water’s condition, targeted treatment options are available. For households with existing equipment that has failed, the C-Series Safe Drinking Water Filter ships ready to configure, providing an effective means to address detected safety concerns reliably and conveniently.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2023-12-31. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA SDWIS record for E DAVIESS CO WATER ASSOC INC (KY0300109), groundwater supply, serving 11997 people: 3 health-based violations of 6 total; lead 90th percentile 0.00361 mg/L