Water Quality and Safety

The City's drinking water comes from the North Texas Municipal Water District (NTMWD). Lake Lavon is the main water source for the district. Additional water supplies are available from Lake Texoma on the Red River and Lake Cooper in east Texas.

Water quality is regulated by the State of Texas. The City of Allen is rated as a Superior Water system, the highest level possible.
  1. Sampling & Testing
  2. Storage Tank Maintenance
  3. Cross Connection Prevention

The City's water supply is sampled monthly, per state and federal requirements. Utility staff take more than ninety water samples each month to ensure the citizens of Allen always have a safe, potable water supply.

Monitors measure chlorine levels 24 hours a day. Pump station operators can change chlorination levels based on the results. Water samples are collected throughout the City and taken to NTMWD for bacteriological testing.

Questions about Water Quality and Testing

In 2018, annual chlorine maintenance by the North Texas Municipal Water District prompted numerous questions about Allen's water quality and testing process. Please see our Question and Answer page to find more information about this state-approved system maintenance