Government data from the EPA’s Safe Drinking Water Information System (SDWIS) for the Huntington District public water system, serving Cabell County, WV, reports a lead 90th percentile concentration of 0.001 mg/L as of December 31, 2024. This figure reflects the distribution of lead at consumers' taps, influenced by plumbing and service lines, not just the source water. The system draws entirely from surface water sources.
Water Source Type and Its Impact on Lead Expectations
Surface water sources, such as rivers or lakes used by the Huntington District system, typically do not contain high lead levels naturally. Lead presence in tap water often arises from corrosion of household plumbing, service pipes, or lead-containing fixtures. Because this system relies on surface water, the expectation is for minimal lead content in source water; however, lead can enter water between the treatment plant and the household faucet. This distinction highlights the importance of understanding where lead might originate when considering treatment options.
Understanding Seasonal and Multi-Year Sampling Records
The 90th percentile lead value reported is based on sampling conducted at various points within the distribution system, representing statistical distribution rather than a fixed number. Variations can occur year-to-year or seasonally due to changes in water chemistry, treatment practices, or pipe conditions. The December 2024 result shows a low 90th percentile lead concentration, but fluctuations over multiple years should be examined alongside this data to understand trends and potential risk periods.
Matching Treatment Capacity to Household Water Use
Selecting the right class of lead treatment for a residence depends significantly on the household’s daily water consumption. Lead treatment systems like the C-Series Lead in Water Filter ship ready to configure and are designed to reduce lead content at the point of use. To ensure adequate capacity, consider your household's typical daily volume of water used for drinking and cooking. Higher volume need means choosing a treatment option rated for larger throughput without frequent filter changes.
Interpreting Certified Laboratory Reports for Lead in Water
A certified lab test for lead reports concentration usually in mg/L or parts per billion (ppb). A single sample value provides a snapshot of lead at the moment and location sampled. The EPA’s 90th percentile measure aggregates multiple samples across the system to indicate the concentration level below which 90% of samples fall. For a in-home test, comparing your lab result to this 90th percentile can help establish whether your household’s lead concentration aligns with or diverges from the system-wide distribution.
Clarifying Terms: Detected, Median, and Range in Lead Sampling
In government records, detected means lead was measurable, but does not imply a violation or unsafe condition. The median is the middle value from all samples, showing typical concentration. The range includes minimum and maximum detected values, outlining variability within the system. Understanding these terms clarifies that a detection does not necessarily indicate a health risk but informs the need for testing and possibly treatment.
Conclusions and Limits of Area Data for Individual Homes
The filtering and treatment choices for your home should be based on your own water testing, not solely on regional or system-level data. The reported 0.001 mg/L 90th percentile in Huntington’s system reflects overall distribution sampling, not the lead level in any specific residence. Using a certified laboratory to obtain your own lead concentration, then comparing to this system baseline, is recommended before deciding which treatment capacity and technology best fit your household.
For homes choosing point-of-use reduction of lead, the C-Series Lead in Water Filter offers a documented method to reduce lead at the tap. It ships ready to configure, providing flexibility in matching treatment to your household’s needs once you have precise test results.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2024-12-31. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA SDWIS record for WVAWC - HUNTINGTON DIST (WV3300608), surface water supply, serving 98647 people: 1 health-based violations of 3 total; lead 90th percentile 0.001 mg/L