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Reading Your Water System's Median and Range Values

Median lead level reflects plumbing influences, not source concentration

The 90th percentile lead concentration reported for New Orleans Algiers Water Works in Orleans Parish is 0.0071 mg/L, measured on 2025-12-31. This figure indicates what was found in the distribution system, including household plumbing—not directly the source water.

Multiple treatment methods are in use in the system

The water system applies a series of treatment processes coded 200|240|380|423|500|680|740. These codes represent different steps designed to address water quality, but the specifics are system-level information rather than individual water conditions.

Seasonal and Multi-Year Variation in the Record

Data includes results from various years and conditions

The EPA record includes health-based violations spanning a range of dates, indicating some variability in water quality challenges over time within the system. This variation means household water conditions can also vary but require specific testing to confirm.

Sampling dates affect interpretation

The lead measurement was sampled at a distribution point on a specific date (2025-12-31). Seasonal factors and system maintenance can cause fluctuations, so up-to-date testing at a home’s tap provides the most accurate current condition.

Influence of Source Type and Sampling Depth

Water supplied comes from surface water sources

The water system serving Orleans Parish obtains supply from surface water. This influences the types of potential constituents but does not specify individual home water chemistry.

Sampling focus is on distribution, not source water

Reported lead levels reflect water in the distribution system or plumbing, not untreated source water. This distinction is important to understand what the public data tells you about potential household water quality issues.

Plumbing Materials and Age Impact Water Quality Separately

Lead levels can be influenced by plumbing components

The 0.0071 mg/L lead value is affected by plumbing materials and internal corrosion, not just the treatment system. Older plumbing or certain materials may increase lead presence at the tap.

System-wide data cannot specify individual plumbing impacts

Because the EPA data is aggregated, the effect of a specific household’s plumbing on water quality requires a direct in-home test to determine actual exposure levels.

Commercial and Industrial Operators Have Additional Considerations

Higher volume use may require detailed monitoring

Commercial and industrial water users must often track additional water quality parameters and operate to different standards, reflecting their operational scale and regulatory requirements.

Household needs center on daily consumption and safety

Residential households typically focus on safe, palatable drinking water and managing total daily water demand, without the broader compliance factors faced by commercial operations.

Adjustments for Large Households or Multiple Residences

Increased water demand affects equipment sizing

Homes with many residents or multiple seasonal households require treatment systems able to handle greater volumes and potentially varying water use patterns throughout the year.

Treatment equipment with sufficient capacity is essential

Choosing a system like the Fleck Whole-Home + Drinking Combo System, rated at 32,000 grains capacity, ensures the treatment can keep pace with higher water consumption typical in larger or seasonal households.

Summary: Matching Treatment to Measured Demand

Orleans Parish residents using water from the New Orleans Algiers Water Works system have access to public data that shows some health-based challenges at the system level, including the presence of lead influenced by plumbing. Understanding these figures helps guide decisions but individual tap testing is necessary for precise household water quality information.

For households finding existing equipment unable to meet their whole-home drinking water needs, the Fleck Whole-Home + Drinking Combo System ships ready to configure and offers documented capacity to manage substantial water loads while addressing common water quality concerns reflected in the local system data.

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 NEW ORLEANS ALGIERS WATER WORKS (LA1071001), surface water supply, serving 52785 people: 7 health-based violations of 9 total; lead 90th percentile 0.0071 mg/L