Water in Lancaster County, Pennsylvania, is supplied primarily from surface sources and treated by the City of Lancaster public water system. This system serves over 120,000 people through nearly 50,000 connections. According to the Environmental Protection Agency (EPA), there have been zero health-based violations recorded for this system, indicating compliance with federal lead and copper rules.
What to Note Before Choosing Lead Water Treatment
When considering lead treatment equipment, it is essential to document some details ahead of time:
- The source of your water (public system or private well)
- The age and material of your home's plumbing and fixtures
- Any prior water quality testing results you may have
- Household water usage to estimate daily demand
These pieces of information help identify whether lead presence is likely and what capacity your treatment equipment should have.
If Your Home’s Plumbing Is Older or Contains Lead-Based Components
Lead detected in tap water often originates not from the public water source but from the plumbing materials in the home or distribution system. Older pipes, solder, or fixtures may release lead at low levels, independent of the water system's surface supply quality. Therefore, knowing your home’s plumbing materials and age is vital in assessing lead risk and treatment needs.
If You Compare Lancaster’s Lead Data to Neighboring Counties
The EPA’s 2025 sampling found the 90th percentile lead level in Lancaster’s water distribution system to be 0.007 mg/L. This percentile indicates that 90% of sampled tap points had lead at or below that concentration. Comparing this to other counties can provide context but should not be interpreted as your home’s water condition. Differences in sampling methodology and plumbing can affect results beyond geographic factors.
If You Notice Water Quality or Health Symptoms Attributable to Lead
Typical signs suggesting lead issues include:
- Metallic taste in water
- Staining of sinks or fixtures (not solely caused by lead)
- Health concerns linked to lead exposure
However, these symptoms alone are not definitive for lead presence, as multiple water quality factors can produce similar effects.
If You Examine the Median and Range of Lead from the Public System’s Sampling
The 90th percentile reported is a distribution-level statistic, not a direct measurement of source water. This means lead is most likely entering water through household plumbing components rather than the initial water source. Median values and ranges help understand variability but cannot specify your household’s actual lead concentration.
To resolve uncertainty, ordering an individual tap water test for lead is recommended. This test offers precise data for your home’s water and forms the basis for choosing treatment equipment.
Once you have tested your water, if lead is present, products such as the Pentair Lead in Water Filter are designed to reduce lead levels effectively. This system ships ready to configure for residential use and can help address the lead content originating from plumbing or distribution systems.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2025-09-30. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA SDWIS record for CITY OF LANCASTER (PA7360058), surface water supply, serving 120000 people: 0 health-based violations of 0 total; lead 90th percentile 0.007 mg/L