The Town of Little Elm provides drinking water to approximately 41,000 residents. According to a 2026 summary based on federal EPA data, the utility has maintained a clean record with no health-based maximum contaminant level violations on file since 2010.
Testing under the EPA’s Fifth Unregulated Contaminant Monitoring Rule, conducted between 2023 and 2025, identified the presence of PFAS compounds in the water supply. While the EPA has established maximum contaminant levels of 4 parts per trillion for PFOA and PFOS individually, the specific concentrations detected in Little Elm were not detailed in the available data.
The report notes that meeting federal legal standards does not necessarily mean water is free of all contaminants, as trace levels of substances like disinfection byproducts are common in municipal systems. Independent health organizations often suggest filtration for vulnerable groups regardless of utility compliance. PureWaterGuys.com, which compiled the summary, offers filtration systems designed to reduce these compounds.
