About Peninsula Irrigation Co.
Serving the San Francisco Peninsula Since 1978
Meet the experienced team behind every job, and find out why Peninsula Irrigation Co. remains the most trusted name in irrigation and landscape lighting on the San Francisco Peninsula.
A Legacy Built on Expertise and Trust
Randy Thomas and Tom Woodhams co-founded Peninsula Irrigation Co. in 1978 and developed a focus on the unique needs of the SF Peninsula, developing a solid reputation for quality, professional work and knowledgeable application of irrigation solutions. While initially focusing on irrigation systems, the company developed an additional focus on lighting systems- a natural complement to irrigation when considering the beauty of landscapes. Previously a long-time employee, Robert Porterfield now serves as owner of Peninsula Irrigation Co. Alongside he and his wife, a small team of dedicated employees continue the legacy of exceptional, personalized, cutting-edge work that has defined Peninsula Irrigation Co. for over 45 years.
California Licensed Irrigation Specialists
We are California licensed plumbers who have spent decades working exclusively in irrigation and landscape lighting; a distinction that truly matters.
A California plumbing license requires rigorous training, testing, and ongoing compliance with state standards. Applied to irrigation (a field that involves water mains, backflow prevention, pressurized pipe systems, and precise water management) that level of credential means we understand your system at a depth that a generalist cannot match. We know the materials, the methods, the failure points, and the solutions that come only from years of focused, specialized experience in this exact niche.
When you hire Peninsula Irrigation Co., you're not getting someone who handles sprinklers between landscaping jobs. You're getting a licensed specialist who has made irrigation their life's work; and that shows in every repair, every installation, and every recommendation we make.
Serving the San Francisco Peninsula for Over 45 Years
We specialize in serving homeowners across the San Francisco Peninsula, from Cupertino to Millbrae. Over 45 years, we've worked on properties of every size and type across San Mateo County; developing a detailed understanding of the Peninsula's microclimates, soil conditions, water pressure variations, and landscaping styles that informs everything we do.
Note: Service to areas outside our primary service area may be subject to an additional travel charge. Contact us to confirm coverage for your location.
Our Mission
To provide reliable, water-efficient irrigation solutions that enhance landscapes, conserve resources, and deliver exceptional service with honesty, quality, and professionalism.
What We Stand For
Everything we do at Peninsula Irrigation Co. is guided by five core principles:
Quality
We deliver dependable workmanship and lasting solutions, using materials and methods we'd trust on our own properties.
Innovation
We embrace smart technology and modern irrigation solutions to promote water efficiency and conservation — because better systems are better for our clients and better for California.
Integrity
We do what we say and stand behind our work — every time, without exception.
Customer Commitment
We prioritize responsive service and invest in long-term relationships. Many of our clients have been with us for decades, and that's something we don't take lightly.
Safety
We protect our team, our clients, and their properties on every job. No shortcuts, no exceptions.
Ready to Work With the Peninsula's Most Trusted Irrigation Team?
For over 45 years, Peninsula Irrigation Co. has been the team Peninsula homeowners turn to when they want the job done right. We bring more experience, more specialized knowledge, and more genuine care to every project than any other irrigation company in the area.
We'd love to show you the difference.