Understanding Lead in Terrebonne Parish Water: Key Facts from Public Records

Make this week's key decision about your household water lead concerns

Before deciding on treatment or filtration, check your knowledge against public data and prepare the right information to get helpful advice.

What “detected,” “median,” and “range” mean in Terrebonne Parish lead sampling records

Detected means measurement, not violation

Lead was measured in water samples from the Schriever Water Treatment Service Area in Terrebonne Parish, but no health-based violations are recorded for this public system, which serves over 116,000 people.

Median (90th percentile) shows a typical upper value in plumbing samples

The lead 90th percentile concentration in samples collected on December 31, 2025, was 0.001 mg/L. This measurement reflects lead levels found at various distribution points, including household plumbing, not the raw water source.

The range explains variability but does not imply unsafe conditions

Range data shows differences among sampled points. However, all results are well within EPA’s health-based standards for lead.

What to record before requesting treatment advice

Test your own water at the tap

Government data does not substitute for home-specific testing. A lead test from your household tap water is necessary to establish your exact concentration.

Note water source and supply context

Your water is supplied by surface water treated at a public system using multiple advanced processes, but plumbing materials affect lead presence.

Document any signs of lead presence

Write down evidence such as staining, metallic taste, or water color changes. These are practical clues relevant to lead presence in your household water.

Consequences of untreated lead in household water over years

Long-term exposure risks

While the system’s data show no violations, persistent lead in tap water over years can contribute to health risks, especially for children and pregnant women. Addressing lead presence proactively reduces potential cumulative exposure.

Impact on plumbing infrastructure

Lead can accumulate in pipes and fixtures, possibly affecting water quality and causing metallic tastes or discoloration.

Differences between public water system records and private well testing for lead

Public system data reflects distributed water, not individual homes

Monitoring captures lead levels at various distribution points and reflects water treated before reaching consumers, but does not account for inside plumbing variation.

Private well tests specify source water quality at a single point

Testing a private well establishes lead presence or absence at the water source, which differs from public system distribution data and can identify unique local conditions.

Special considerations for large households, second homes, or seasonal properties

Water use patterns affect lead levels

Homes used less frequently may experience water stagnation, increasing potential for lead leaching from plumbing.

Household size matters

Different water demand can affect flow rates and contact time with pipes, influencing lead concentrations at taps.

How lead enters the groundwater or distribution system in Terrebonne Parish

Role of plumbing materials

Lead presence is primarily linked to plumbing components such as solder, pipes, and fixtures within homes and buildings rather than the water source or treatment process.

Surface water treatment and distribution

The public system uses multiple treatment steps for surface water, effectively managing contaminants; lead detections typically arise from corrosion in distribution lines or premise plumbing.

Managing lead in your household water with a C-Series Lead in Water Filter

Once you know your home’s lead concentration, consider a C-Series Lead in Water Filter, designed to reduce lead at the tap. It ships ready to configure and can support safer water use according to your measured needs.

Where this information comes from

Source: EPA SDWIS public water system record. Sampled 2025-12-31. These figures describe the public water system's record, not the plumbing inside any individual building.

On record: EPA SDWIS record for SCHRIEVER WATER TREATMENT SERVICE AREA (LA1109002), surface water supply, serving 116460 people: 0 health-based violations of 6 total; lead 90th percentile 0.001 mg/L