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Bill

AB 990

Public water systems: emergency notification plan.

2025-2026 Regular Session Introduced by Heather Hadwick

AB 990 requires California public water systems to establish emergency notification plans for water contamination and service disruptions to protect public health.

Ordered to inactive file at the request of Senator Choi.
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Bill Summary · AB 990

Legislative bill overview

AB 990 requires California public water systems to develop and maintain emergency notification plans for water quality emergencies, contamination events, or service disruptions. The bill establishes standards for how quickly and effectively water utilities must alert customers to potential health risks or system failures.

Why is this important

Water system emergencies can pose serious public health risks, and delayed or inadequate notification can prevent residents from taking protective action. Clear notification protocols ensure vulnerable populations—including those without internet access—receive critical information through multiple channels during crises.

Potential points of contention

  • Compliance costs: Smaller water districts may face significant expenses implementing multi-channel notification systems and maintaining emergency plans
  • Notification speed standards: Disagreement over realistic timeframes for detecting contamination and notifying customers, especially for complex water systems
  • Liability concerns: Utilities may worry about legal exposure if notifications are delayed or deemed insufficient, potentially creating defensive over-notification

Compiled from official sources — confirm details with the bill’s official record.

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