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  • Verified reviews icon12
    Verified well and pump services reviews

Top-Rated Well and pump technicians in Pasadena - Updated Nov 2026

Avatar for Bob & Marc Plumbing Heating & Air
Bob & Marc Plumbing Heating & Air
4.5(
104
)
Well Pump - Install or ReplaceWell Pump - Repair or Service

Serving Pasadena, CA and surrounding areas

In business since 1989

"Two service Techs, Daniel and Kevin, came by the same day i called regarding a clogged sewer line. They were very pleasant and personable which put me immediately at ease. They performed an inspection and showed me a live video feed of my sewer line, indicating where the roots were growing in that caused the clogging. 
They recommended hydrojetting due to the size of sewer, and scheduled a visit the following day.  The next day the same techs came by and cleaned out the sewer line via hydrojetting. Afterwards they did another video inspection and showed me their results. They were professional, communicative, clean, and very pleasant to deal with.
"
Recommended by89%of homeowners
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Wells and Pumps FAQs, answered by experts

No. Well pump replacement is not recommended as a DIY project, particularly if you have a deep well and a submersible pump. Plumbing and electricity are best left to the pros, especially when something like your well pump includes both. Even when troubleshooting your pump, it pays to have a partner standing by for your assistance and safety.

Every 1-2 years to ensure optimal performance and prolong lifespan.

You should check water pressure twice a year to ensure there aren’t any irregularities and that it isn’t too high. It’s also smart to check it any time you notice symptoms of high water pressure (like banging pipes, inconsistent water flow, and leaky fixtures). Similarly, if you live in an area that’s prone to water pressure fluctuations due to municipal supply changes, elevation, or seasonal temperature shifts, check it more frequently. You can buy an affordable water pressure gauge and check the water pressure yourself.

How do you set your well’s pressure tank? All you need to do is first drain the tank of water and find the pressure switch. Remove the switch cover and adjust the switch with a wrench—clockwise to increase water pressure, and counter-clockwise to reduce it. Each complete turn of the nut on the switch should equal 2.5 psi. Once this is done, replace the switch cover. All that’s left is to adjust the pressure of the tank itself using an air compressor and a tire gauge to support the new setting.

The average three to four-bedroom home typically uses a well pump rated for 8 to 12 gallons per minute (GPM). To find the most accurate size for your specific needs, a common rule of thumb is to count the number of water fixtures and appliances in your home and aim for that number in GPM. This calculation allows for about one gallon of water per minute per fixture. Because estimating the correct size can be challenging, it's best to have a professional technician make the final determination. A professional can ensure your pump provides sufficient water for your home, especially during peak usage hours.

The Pasadena, CA homeowners’ guide to well and pump services

From average costs to expert advice, get all the answers you need to get your job done.