MMWD at Work

MMWD’s skilled workforce operates our water system 24 hours a day, 365 days a year. Providing safe, reliable water requires a broad range of expertise, from engineers who plan and design our system, chemists who test for water quality, service crews who maintain the pipelines, biologists and ecologists who ensure the health of our watershed, responsive customer service representatives and many others. Read on to meet some of the people who help deliver your water from Tam to tap.

Gloria at workGloria, Senior Customer Service Representative

With nearly 200,000 customers in our service area, one would think it would be impossible to maintain personal connections.

Not so, however, for Gloria, a Senior Customer Service Representative who has worked at MMWD for 20 years. Gloria can tell you who is coming in to our customer service counter, when, and about how much their bill will be. When a longtime customer didn’t make it in to pay his bill due to a health concern, Gloria noticed and personally reached out. When the customer was well enough to come back into our offices, he had a bouquet of flowers ready for Gloria.

In addition to making lasting personal connections with our customers, Gloria also manages MMWD’s affordability programs, processing applications for the Service Charge Waiver Program for Low Income Customers and the Medical Disability Discount.

“This is a great place to work,” says Gloria. “I enjoy the teamwork. I like that management is flexible and willing to work with customers who may have financial problems with paying their bills. I like that we, as a district, come together to provide the community with reliable, high-quality water.”

To learn more about our discounted rate programs, visit:

 Christina, Water Conservation Specialist II


As one of MMWD's Water Conservation Specialists, Christina’s days are busy and varied. She may spend her morning at a customer’s home identifying a problem with their irrigation controller, and in the afternoon visit an elementary school to teach first graders about the water cycle and the importance of the Mt. Tamalpais watershed.

When asked what she enjoys most about her 11 years here at MMWD, Christina said, “At the end of the day, feeling like I’ve sincerely made a difference. Helping a customer find and stop a leak that may have been wasting hundreds (or even thousands) of gallons of water per day is at the top of my list.”

In addition to helping our customers find and stop leaks, our Water Conservation Specialists work behind the scenes to review landscape projects and plans to make sure they comply with the State’s Model Water Efficient Landscape Ordinance.

If it sounds like Water Conservation Specialists know a lot about a lot, you’re right. “There’s so much to know! And so much to keep learning too." says Christina. "Questions from our customers always keep me on my toes. During the same visit, I might get asked for advice on how to fix a leaky toilet; but also about state water regulations, rates, and MMWD’s water treatment process.”

MMWD's Water Conservation Specialists wear many hats, keeping the district at the forefront of advancements in conservation while helping our customers find ways to reduce their water use and their water bills.

Matt Cerkel

Matt, Park Ranger

Even after 23 years on the job, MMWD Park Ranger Matt Cerkel never knows what each day will hold. As one of six rangers tasked with protecting MMWD’s nearly 22,000 acres of watershed land, Matt functions as peace officer, wildland firefighter, EMT, search and rescue specialist, naturalist, historian and educator. Watch the video below to learn more: 

Chris Nanney

Chris, Water Quality Lab Manager


Marin Municipal Water District’s water goes through over 120,000 quality tests in a year to ensure what arrives at your home’s tap is safe to drink. Who oversees many of tests, and ultimately, the health and safety of our customers? Chris Nanney, our Water Quality Lab Manager.
During his 20 years (and counting!) at MMWD, Chris has worked his way from an entry level Chemist, to managing the lab — gaining invaluable experience along the way. 

Chris oversees all water quality field staff as they gather samples from different points in MMWD’s water distribution system.

He also manages a team of chemists that test the samples to ensure our water meets or exceeds all state and federal drinking water standards. With ever-changing regulations and improved testing technology and equipment, there is rarely a dull day in the lab. “MMWD keeps me challenged, as there is always something new for us in the lab world.” As MMWD’s resident water quality expert, Chris finds answering customer questions and troubleshooting T&O (taste and odor) concerns especially rewarding. 

With a professional like Chris working behind the scenes, our customers can rest assured their water not only tastes great, but is safe to drink, and that is an irreplaceable asset to our community.