Pentair Whole-Home + Drinking Combo System

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What does a certified lab test report for your home's drinking water, and how should you read it?

A certified laboratory test provides detailed measurements of specific substances in your water sample, such as metals or contaminants. Results include concentrations typically reported in milligrams per liter (mg/L) or parts per billion (ppb). For example, lead concentrations are reported to show how much lead is present in the sample taken from your home's water source or plumbing.

It's important to understand that these results reflect only the specific sample tested. This means that even if testing shows a low lead level one day, it does not guarantee that water quality is consistent at all times or locations in your home. A certified test helps identify current water quality conditions but must be interpreted carefully, preferably with expert guidance.

How do public water system records differ from private well testing in what they establish?

Public water system records like those from the St. Bernard Parish Waterworks cover water quality measurements collected and averaged over a large number of homes and connections—18,607 in this case. These records describe the overall system's water, not any individual household's water condition.

The St. Bernard Parish Waterworks uses surface water as its source and maintains treatment processes indicated by codes 200, 348, 360, 401, 403, 560, and 600. The system has three documented EPA health-based violations out of seven total. However, these violations are at the system level and do not necessarily reflect water quality at a specific tap.

By contrast, private well testing examines water from a single well and provides specific information for the household using that well. Public records serve as general background but not a substitute for personal water testing.

What additional water quality questions might commercial or industrial operators ask that a household usually does not?

Commercial or industrial water users often require information beyond basic health-based assessments. They may inquire about water hardness, total dissolved solids, and specific chemical or biological constituents that affect manufacturing processes or equipment longevity.

Households typically focus on safety and taste concerns for drinking and everyday use, while commercial operators need detailed data to comply with regulations or optimize operations. Such concerns may include continuous monitoring results and testing under different operational conditions, which are less commonly required for residential use.

How does water treated by the Pentair Whole-Home + Drinking Combo System differ at the tap?

Once water passes through the Pentair System, it undergoes combined filtration and treatment designed for whole-home and drinking water applications. This process can reduce or remove certain contaminants and improve water taste and clarity throughout the entire household plumbing system.

The system has a grain capacity of 32,000, indicating its ability to handle significant treatment capacity before maintenance is needed. Treated water from this system aims to enhance the quality of water that residents consume and use daily, delivering consistent performance across all faucets.

What should you write down before seeking water treatment advice?

• The date and results of any recent certified laboratory water test you have conducted.
• Information from your local public water system, such as violations or treatment methods reported by St. Bernard Parish Waterworks.
• Details about your home's plumbing type and any known water quality issues like taste, staining, or odors noticed.
• Your household’s water usage patterns and any sensitive health conditions that might be affected by water quality.

What does the measured water quality range mean against federal standards, and what does it not mean?

Federal standards set health-based maximum contaminant levels for substances in public water systems, aiming to protect the general population. The St. Bernard Parish Waterworks record shows three health-based violations, indicating some instances where the water system exceeded these limits. However, compliance is complex and based on multiple factors including timing and location of samples.

Importantly, detection of a substance or an aesthetic secondary standard being exceeded does not automatically mean that water is unsafe or in violation for your specific home. For example, chloride or total dissolved solids levels might affect taste or cause staining but are not health violations.

What should you NOT conclude from area data alone?

You should not assume your home’s water quality precisely matches the public water system’s average data or violations. Individual tap water can vary due to plumbing materials, water age in pipes, or local conditions. Also, a detection in the system does not mean your water is unsafe.

Personal testing through a certified laboratory is essential to understand your own water quality. Considering a solution like the Pentair Whole-Home + Drinking Combo System can help address general concerns once you have a clear understanding of your water's characteristics.

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 ST BERNARD PARISH WATERWORKS (LA1087001), surface water supply, serving 44783 people: 3 health-based violations of 7 total; lead 90th percentile 0.0024 mg/L