Public Water System Bacteria Information for Key West
The public water system serving Key West, Monroe County, FL, known as FKAA - Florida Keys R.O. Plants (PWS ID FL5444047), supplies groundwater to around 30,000 people through a single connection system. According to EPA’s Safe Drinking Water Information System (SDWIS) records, this system has had one health-based violation noted in its history. This means that at some point, the system did not meet a health-related regulatory standard, though this does not specify severity or current conditions.
It’s important to understand that these records represent the entire public water system and not an individual residential supply or specific home plumbing. Any individual household’s bacteria levels can only be accurately determined through direct testing of their water at the tap.
What This Data Does and Does Not Say About Your Home Water
The detection of a health-based violation alerts us that bacterial contamination was present somewhere in the system’s distribution or source water. However, it does not automatically reflect the continuous quality or safety of water delivered to every home. There may have been improvements or corrective actions following the violation. Also, bacterial presence in municipal water typically triggers treatment steps to reduce risks.
Therefore, homeowners aware of bacteria concerns should consider testing their own water to determine if bacterial contaminants exist within their household plumbing or water source beyond the system-level data. This step is especially relevant if private wells or storage tanks are involved.
Evaluating Household Water for Bacteria
To understand your home's specific water quality in relation to bacteria, comprehensive microbiological testing is necessary. Standard tests look for total coliform bacteria, E. coli, and other indicators of bacterial contamination. Only through such testing can the severity and presence of bacteria in your own water be confirmed.
How Advanced UV Disinfection Technology Can Help
One proven technology designed to address bacterial contamination effectively is ultraviolet (UV) disinfection. Units such as the C-Series Safe Well — Bacteria & Disinfection utilize UV light to disrupt the DNA of bacteria and other microorganisms, preventing them from reproducing and causing harm.
Because UV disinfection does not add chemicals to water and works without altering taste or odor, it offers a chemical-free means of improving water microbiological safety. The equipment ships ready to configure for household use, allowing flexible integration into your existing water system.
Next Steps for Key West Households
- Review EPA SDWIS public water system records for updates on local water quality.
- Consider comprehensive microbiological testing of your household water to assess bacterial levels specific to your home.
- Evaluate the use of UV disinfection technology like the C-Series Safe Well for ongoing bacteria control at the point of use.
Understanding the difference between regional water system data and your household’s unique water condition is key. By obtaining in-home testing and exploring appropriate disinfection technologies, you can take informed steps toward ensuring safe and reliable water quality for your family.
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.

