Chloramine Presence in Key West's Public Water System
Residents of Key West receive water from the FKAA - Florida Keys Reverse Osmosis Plants system, which serves approximately 30,000 people using groundwater as the source. According to the EPA's Safe Drinking Water Information System (SDWIS), this system has recorded one health-based violation among its total four violations. While chlorine is commonly used in water disinfection, chloramine is also frequently applied to maintain water quality as it is more stable and longer-lasting, but it can react differently in household plumbing and usage.
The government data reflects water quality conditions for the entire system and do not specify the chloramine concentration at each residence. Variations in water treatment, distribution, and individual home systems mean that homeowners should conduct specific water testing on their supply to determine their exact chloramine exposure.
Challenges with Chloramine in Residential Water
Chloramine is a compound formed by combining chlorine and ammonia and is used as a disinfectant to limit microbial growth in water systems. However, chloramine can cause taste and odor issues, reduce the effectiveness of some plumbing fixtures, and may react with household water components differently than chlorine alone. It is distinct from chlorine and often requires specialized treatment methods for removal or reduction in home water systems.
Why Accurate Testing Is Crucial
Given that government data covers broad system averages and not individual household levels, a home water test specifically targeting chloramine is needed for precise evaluation. This test will provide the actionable data needed to select the appropriate type and capacity of treatment equipment.
Key Considerations for Selecting Water Treatment Class
When deciding on a chloramine treatment system for a residence, factors to consider include:
- Water volume and usage patterns in the household
- Levels of chloramine detected in the home’s water supply
- The treatment system's capacity and effectiveness against chloramine
- Integration with existing water systems for whole-home coverage and drinking water needs
Matching treatment capacity to demand and confirming the technology effectively addresses chloramine are important steps in securing water quality.
Technology to Manage Chloramine in Residential Water
The documented solution using carbon filtration technology is recognized for its ability to reduce chloramine. The C-Series Whole-Home + Drinking Combo System features a carbon filter designed to handle up to 32,000 grains, enabling comprehensive treatment for household water.
This system ships ready to configure, allowing homeowners to integrate it into their water supply without complex setup requirements. Carbon filtration works by adsorbing chloramine and other contaminants, improving water taste and odor while reducing potential impacts on plumbing and water use.
Next Steps for Homeowners in Key West
Homeowners concerned about chloramine should start with a water test specific to their residence to measure current chloramine levels accurately. This step provides the foundation for selecting the most appropriate treatment system class and capacity.
Understanding government water system information offers helpful context but does not replace individual water analysis. The C-Series Whole-Home + Drinking Combo System offers a proven carbon filtration approach capable of meeting the needs of households with chloramine concerns, ensuring water quality that supports both general use and drinking water.
Where this information comes from
Source: EPA SDWIS public water system record. These figures describe the public water system's record, not the plumbing inside any individual building.

