Emergency Preparedness

What MMWD is doing to prepare for a PG&E Public Safety Power Shutoff 

During fire season, PG&E may begin proactively turning off power in designated areas when there is a high risk of a wildfire. PG&E will determine which areas and customers are affected based on several factors, including weather conditions such as Red Flag Warnings, high winds, and dry conditions.

While customers in high fire-threat areas are more likely to be affected, PG&E is asking all of its customers to be prepared, and to plan ahead and have supplies to last for several days, in the event of a Public Safety Power Shutoff (PSPS).

If there is a PSPS event in Marin, MMWD asks all customers to suspend irrigation and restrict water use to indoors only for the duration of the power shutoff. We rely on electricity to power our treatment plants and to  distribute water. We have emergency generators ready to ensure your water service is not interrupted. By curtailing water use during a shutoff, you can help ensure more water is available for essential uses such as firefighting.

To learn more about how your power supply may be affected by PG&E's power shutoffs, please visit PG&E's website at pge.com or call 1-800-743-5000.

To learn more about how Marin Water is preparing for PG&E's power shutoffs, and what you can do to prepare your home and family, click on the Fact Sheet to the right. 
Or this link for a PDF

Download the PG&E Public Safety Power Shutoff Fact Sheet

Fact Sheet PSPS 2020 FV

Draft Wildfire Resilience Plan 2020

The Marin Municipal Water District’s core mission is explicitly focused on natural resource management, sustainability, and water supply reliability. Implicit in this mission statement is a guiding principle that water reliability is a fundamental element of the community; supporting the economy, ecology, and landscapes that make Marin a unique and desirable place to live.

As the community we serve contends with potential natural disasters, the district recognizes we have a responsibility and role to play; we have a duty to protect the community we serve by preparing for and mitigating against wildfire. District staff developed this Wildfire Resilience Plan (WRP) to summarize existing district programs and operations related to wildfire preparedness, identify data gaps, and develop recommended actions that will lead to a more wildfire resilient and reliable water system that protects communities throughout the service area.

To learn more, click on Draft Wildfire Resilience Plan 2020. The final Plan will be a living document; updated periodically to address changing conditions and the evolution of wildfire resiliency best practices.

Got Water?

MMWD has invested heavily in facility upgrades and employee training to help ensure our water is there when needed most. There are also some simple steps you can take on your end to be ready in an emergency. (Download this information as a printable brochure in English or Spanish.)

Store an Emergency Supply

One of the easiest yet most essential steps you can take to prepare for an earthquake or other disaster is to set aside an emergency water supply.
  • Store a five-to-seven day supply of water for each person in your household. Plan for one gallon per person per day, for drinking and sanitation. Store extra water for pets and family members with special needs.
  • Tap water from MMWD can be safely stored in well-sanitized, food-grade containers such as plastic soda bottles. Avoid used milk or juice jugs and containers that will decompose or break. Seal tightly, then label and store in an easily accessible, dark, cool, dry area away from solvents and chemicals. Replace every six months. You also can purchase commercially bottled or packaged water for long-term storage.
  • Don't forget your other emergency supplies and necessities. Get a complete list at ready.gov.

Know How to Turn Off Your Water

In the event of an earthquake or an unexpected winter freeze, you may need to turn off your water to prevent damage to your property from broken pipes.
  • Prepare in advance by locating the water main leading into your house and attach a label to it for quick identification (so that you can find it even in the dark). Turn clockwise to shut off.
  • If you can't turn the water off at the main leading into your house, shut off water at the main meter box (usually by the street), which controls the water flow to the entire property. To shut off, turn valve arrow toward the street.
  • If you can't turn off the water yourself, call MMWD's emergency line at 415-945-1500 and we will send someone to turn it off for you.

Identify Other Sources of Water

If a disaster catches you without a stored supply of clean water, you can use the water in your pipes, water heater, and ice cube trays. If you're not certain about the purity of the water, filter and disinfect as described below.
  • To use the water in your pipes, let air into the plumbing by turning on the faucet in your home at the highest level. A small amount of water will trickle out. Then obtain water from the lowest faucet in the home.
  • To use the water in your water heater, close the intake valve and cut off the heater's gas or electricity supply. Open the drain at the bottom of the tank and collect the water in a clean container. You may need to turn on a hot-water faucet in the house to allow air into the tank to start the flow of water. Be sure to refill the tank before turning the gas or electricity back on.
  • Consider using water from the toilet tank or perhaps a pool or other outdoor water source for washing and cleaning purposes.

Purify Water for Drinking

In an emergency, it's possible available water sources may require additional treatment to be safe to drink.
  • If water is cloudy, filter through clean cloth or paper towels before disinfecting.
  • Disinfect water by bringing it to a rolling boil for one minute. Let the water cool before drinking. Boiled water will taste better if you put oxygen back into it by pouring the water back and forth between two clean containers. 
  • If you are not able to boil water, add regular household bleach (5.25% sodium hypochlorite; do not use scented, "ultra," or "color safe"). Use eight drops per gallon for clear water or 16 drops for cloudy. Mix thoroughly and let stand for 30 minutes. A slight chlorine odor should be detectable. If not, repeat the dosage and let stand an additional 15 minutes. The potency of bleach diminishes with time, so keep a sealed bottle and an eyedropper with your emergency kit.

Stay Informed When Disaster Strikes

Tune your radio to your community's emergency radio station or one of these commercial emergency broadcast stations:
  • KCBS: 740 AM
  • KGO: 810 AM
We encourage you to sign up to receive emergency alerts on your cell phone through the County of Marin's emergency notification system
TENS alert

Want to Do More to Prepare


For emergency preparedness information and training opportunities, visit: