Calcasieu Parish residents receive their water primarily from groundwater sources managed by the LAKE CHARLES CITY OF WATER DIVISION (system LA1019029). This system serves nearly 80,000 people through over 34,000 connections, ensuring water is delivered from the aquifer to household taps. Perchlorate has been monitored in this area, with 18 samples taken during a federal 2002-2003 occurrence survey. None showed perchlorate levels above the laboratory reporting threshold of 4.0 micrograms per liter (µg/L), and there have been no health-based violations recorded.
If You Follow a Regular Maintenance Rhythm for Using Perchlorate Water Filtration
The Fleck Perchlorate Filter system is designed to help households manage perchlorate in their water supply effectively, especially when existing equipment no longer keeps pace. Maintaining this equipment involves periodically configuring and replacing the filter media according to usage and water quality. This rhythm depends on your household’s water consumption and current perchlorate loads; proactive maintenance ensures the system continues to reduce perchlorate efficiently without interruption.
If You Receive a Certified Laboratory Test Result for Perchlorate in Your Household Water
Certified laboratory tests for perchlorate report concentrations in micrograms per liter (µg/L). A typical test result includes the detected level if above the method reporting limit or a non-detect if below it. In Calcasieu Parish, government-collected data found no samples exceeding 4.0 µg/L during a federal occurrence study, but individual household water can vary. Homeowners considering their own water should obtain a current laboratory test specific to their well or connection to understand their water’s perchlorate concentration accurately.
If You Are Distinguishing Perchlorate from Other Water Constituents with Similar Concerns
Perchlorate is often confused with nitrate or total dissolved solids (TDS) because all can influence water quality and household water treatment needs. However, perchlorate is a persistent anion often linked to industrial or agricultural sources and specifically affects thyroid function at high levels. Unlike nitrate or TDS, perchlorate does not contribute to taste or staining issues commonly addressed by water softening. Therefore, targeting perchlorate requires filtration specialized for that ion rather than general water conditioning.
If You Want to Understand How Perchlorate Enters the Groundwater or Distribution System in This Region
In Calcasieu Parish, perchlorate can enter the groundwater through industrial processes, use of certain fertilizers, or past activities involving rocket propellants and pyrotechnics. Although the public water system draws from groundwater sources, regular monitoring under federal programs has not identified perchlorate levels above laboratory reporting thresholds. Nonetheless, localized events or private wells could show different concentrations. Understanding the local geology and land use can help homeowners evaluate the risk of perchlorate presence in their own water supply.
If You Wonder Why Aesthetic Secondary Standards Differ from Health-Based Limits for Perchlorate
Aesthetic secondary standards relate to water properties affecting taste, color, or staining but do not indicate health risks. Perchlorate has no federally established maximum contaminant level (MCL) for health-based drinking water regulation, although it is monitored because of potential health concerns at higher concentrations. The absence of an MCL means no regulatory limit applies, but some guidelines and filtration options exist to manage perchlorate if detected or if household equipment needs support to maintain water quality.
This information strictly reflects the public water system record for Calcasieu Parish’s LAKE CHARLES CITY OF WATER DIVISION according to EPA data and federal monitoring programs. For more detailed data and updates, visiting official EPA resources is recommended.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2003-12-02. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR1 monitoring (2001-2005) for LAKE CHARLES CITY OF WATER DIVISION (LA1019029), LA: 18 results across 1 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level
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