Understanding A Boil Water Notice/Advisory

A boil water advisory was issued for parts of Dean WSC on Tuesday, November 11, 2025 due to a water main break that lowered water pressure and resulted in water outages for some homes and businesses between Spur 364 and County Road 1140.  Once the main was repaired, a special water sample was collected and taken to the Northeast Texas Public Health District Laboratory (NETHEALTH).  The NETHEALTH Regional Laboratory is certified by the Texas Commission on Environmental Quality (TCEQ) and provides water testing services to ensure safe and clean drinking water across East Texas.
On 11/12/25 at approximately 11:20AM, our office received a call from the NETHEALTH laboratory, confirming the system's water was free of harmful microbials.  The boil water advisory was lifted (aka: rescinded) at that time.

According to the Texas Commission on Environmental Quality (TCEQ), there are certain conditions, even in the absence of a laboratory-confirmed microbial contaminant, that necessitates the issue of a boil water notice.  Per the TCEQ's authority, Dean WSC must issue a boil water notice, though no public health threat is yet confirmed, whenever the following conditions occur:

Additional Conditions

  • Any event where conditions at a PWS are such that public health protection is compromised or potentially compromised [30 TAC 290.46(q)  ]
    • Low pressure (i.e., below 20 pounds per square inch)
    • Water outages
    • Disinfectant residual levels below the required minimum (i.e., 0.2 mg/L free and 0.5 mg/L total)
    • Line breaks or repairs (construction)
    • Storage problems
    • Well problems
    • Mechanical equipment problems
    • Power outages
    • Treatment facility problems
    • Natural disasters