You might notice a metallic taste or occasional discoloration in your water, concerns that often arise for households after water treatment equipment stops functioning as expected. In Delaware County, Ohio, the DEL-CO WATER COMPANY, INC. supplies water to roughly 150,000 people through 56,000 connections, drawing from surface water sources.
What EPA’s Lead Measurements Indicate and What They Do Not
EPA's public water system records for DEL-CO WATER COMPANY, INC. show a 90th percentile lead level of 0.000825 mg/L as of December 31, 2024, based on distribution system sampling. This figure represents the upper end of lead concentrations found across sampled homes, but it is critical to understand this measure applies to the water system broadly rather than any single household's water. Furthermore, EPA records show zero health-based violations for this system, indicating compliance with federal safety standards.
However, this measured number is not a definitive statement about your home's specific water quality. Plumbing materials and household fixtures affect lead levels at the tap, so testing your own water is essential to assess your situation accurately.
Understanding Aesthetic Secondary Standards Versus Health-Based Limits for Lead
Lead does not have an EPA secondary standard related to taste or appearance because even minimal concentrations can impact water aesthetics and health concerns differently. While some metals like iron or manganese can cause discoloration or taste changes, lead primarily presents a health concern rather than aesthetic issues. It is regulated based on health-based action levels rather than appearance or odor.
Therefore, a detection of lead—even at low levels—should be addressed primarily for health considerations rather than for taste or staining concerns.
Distinguishing Lead From Other Water Concerns Commonly Confused With It
Lead contamination is often mistaken for issues caused by rust, iron, or sediments from aging pipes; these causes can produce discoloration and metallic tastes as well. However, lead originates mainly from plumbing materials such as lead solder, pipes, and brass fixtures rather than from the water source itself. This differs from other contaminants that come directly from the water supply or external pollution.
Recognizing this difference is critical since treating lead requires filtration designed specifically to reduce dissolved metals at the tap, rather than general sediment or iron removal systems.
Consequences of Prolonged Exposure to Untreated Lead in Household Water
Long-term consumption of lead-containing water can contribute to elevated lead levels in the body, which is particularly concerning for children and pregnant women. It can affect neurological development and cause other adverse health outcomes. Because lead exposure accumulates over time, relying on failed or outdated water treatment equipment risks allowing low-level exposure to continue unnoticed.
Addressing this issue promptly minimizes ongoing exposure and protects household members' health over the years.
How Source Water Type and Sampling Depth Influence Lead Risk Expectations
DEL-CO WATER COMPANY's surface water source, as opposed to groundwater, typically has different risk profiles for lead contamination. Lead concentration tends to result more from plumbing materials rather than the source water itself. Sampling distribution at the tap reflects variations in household plumbing rather than the original water quality.
For properties utilizing surface water–based municipal supplies like DEL-CO, lead concerns focus primarily on in-home plumbing and the local distribution system condition rather than on well depth or source contamination commonly associated with private wells.
In summary, Delaware County’s public water system consistently meets federal lead standards at the system level, but lead presence at individual taps can vary. Identifying lead issues requires testing your own household water. When existing water treatment equipment fails to address lead, the Pentair Lead in Water Filter ships ready to configure as a documented filtration technology designed to reduce lead concentrations effectively. Taking these steps helps ensure ongoing water quality for your household despite equipment challenges.
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 DEL-CO WATER COMPANY, INC. (OH2101412), surface water supply, serving 150000 people: 0 health-based violations of 0 total; lead 90th percentile 0.000825 mg/L
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