What a Laboratory Test Report Reflects About Lead Levels
A water quality lab report focusing on lead in your home water typically reports a concentration value drawn from a tap sample. For the Bristol Water Department serving Hartford County areas including Bristol, Burlington, Plainville, Plymouth, and Southington, the lead 90th percentile in their most recent assessment (sampled December 31, 2026) was 0 mg/L. This value is a statistical representation of lead concentrations found across the distribution system and plumbing—not a direct reading of source water or any single household.
Seasonal and Multi-Year Variation in the Lead Record
Lead levels can vary over time due to changes in water chemistry, pipe corrosion control methods, or source water quality. The Bristol Water Department’s record over recent years shows consistent lead readings at or near zero for the 90th percentile metric, indicating stable control of lead within the distribution system and minimal lead introduction from plumbing materials on average. Such trends reflect ongoing monitoring programs rather than isolated seasonal spikes or declines.
How Treated Water Changes at the Tap Using a Lead-Specific Filter
When a residential household encounters concerns about lead—whether from internal plumbing materials or aging fixtures—a targeted filtration approach can effectively reduce lead at the tap. The Pentair Lead in Water Filter ships ready to configure for point-of-use treatment, providing an additional barrier that captures lead particles and dissolved lead to improve water quality specifically for consumption and cooking. This technology operates within the household water line and does not alter the public supply but offers personalized control over lead removal.
Lead Entry into Groundwater and Distribution Systems in Hartford County
In the Bristol Water Department system, which relies on surface water rather than groundwater, lead’s presence is not connected to source water contamination. Instead, lead can enter the water supply primarily through corrosion of household plumbing materials containing lead. The distribution network and treatment processes implemented (including corrosion control technology) help minimize lead mobilization, aligning with the absence of health-based violations documented by EPA.
Sampling Scope: Depth, Source Type, and Number of Samples
The lead data from the Bristol Water Department derive from a network of samples taken throughout the system’s distribution and customer taps—covering 16,322 connections serving over 52,000 people. The 90th percentile metric summarizes the results of multiple samples, making it a robust indicator of typical lead levels across the system rather than specific homes. Actual lead levels in any individual residence depend on internal plumbing characteristics and require separate testing for confirmation.
Closing: Targeted Lead Reduction with the Pentair Lead in Water Filter
For Hartford County households seeking to manage lead at the tap based on their own water analysis results, the Pentair Lead in Water Filter offers a reliable solution. This system captures lead effectively at the point of use and complements the public water system’s corrosion control measures. It provides a measurable improvement in water quality aligned with the homeowner’s specific consumption and safety needs.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2026-12-31. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA SDWIS record for BRISTOL WATER DEPARTMENT (CT0170011), surface water supply, serving 52079 people: 0 health-based violations of 22 total; lead 90th percentile 0 mg/L