Water Filtration Systems in Orange County for Installation & Repair

Hard water shows up on glassware, in kettles, and on shower doors across South Orange County. Precision Plumbing installs and repairs Water Filtration Systems in Orange County for houses and small businesses. Work starts with a test of what is actually in your supply. Call to book a visit and talk through your options. Pricing depends on the unit and the plumbing behind it.
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We've had a great experience with Precision Plumbing. Most recently, they helped us locate and repair three separate leaks under our concrete slab. They started with a free inspection and did a very thorough job diagnosing the issue, clearly explaining what was going on and what our options were. Their approach was professional, direct, and honest, no upselling, just practical solutions and clear communication. The work was handled quickly and efficiently. I felt confident in their expertise the entire time. We had also used them previously for a midnight plumbing emergency, and they were incredibly responsive and reliable, one of the only companies willing to come out at that time which is why we trusted them again for this most recent project. Martin & his team are super knowledgeable, dependable, a great value for what they provide and easy to work with. I highly recommend Precision Plumbing!!!
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darlene arriaza
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Our main water line sprung a leak and it was such a inconvenience when you don't have proper running water. After finding Precision on Google, I decided to give him a call. He was very responsive and was the first out of 3 plumbers to arrive next day in the AM. He was very easy to talk to and didn't try to up sell like the other ones. His quote was fair and I didn't feel like I was getting ripped off. I would call them back if I need any plumbing services in a heart beat!
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Mel
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Our main sewer line had been giving us issues for over a year. Slow drains, weird smells in the backyard, and finally a backup in the guest bathroom that pushed us over the edge. Got three quotes for a sewer replacement for our home in Laguna and these guys came in not the cheapest but definitely the most thorough. The tech ran a camera down the line first and walked me through exactly what we were looking at on his tablet. Turned out we had old clay pipe with two big root intrusions and a partial collapse near the cleanout. They scheduled the work for the following week and got it done in two days. Crew was respectful, kept the yard damage to a minimum, and even reseeded the section of grass they had to dig up. Haven't had a single issue since and I sleep better knowing it's handled.
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Sharon Garcia
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I’m usually very nervous to call any sort of service company. I feel like they always make me feel stupid and rip me off. My toilet was clogged and I was already embarrassed to contact anyone. When I contacted Martin, he was immediately kind and explained what he would be doing. He did the job perfectly and even left my bathroom cleaner than it was before!
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Alexis Reagan
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Really happy with the service from Precision Plumbing. I called them out for a plumbing issue at my home and they showed up quickly, which I really appreciated. The plumber was easy to talk to, explained what was going on in and got everything fixed without any hassle, no confusion, just straight to the point and got the job done right. Overall, solid experience. I’d definitely use them again if I run into any plumbing problems.
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Ricky Ly
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Was bracing for a hard sell when our 14 year old water heater started leaking. Two other plumbers basically tried to push tankless on me before they even looked at the unit. Called Precision in Mission Viejo and he came out the next morning, walked through both options, laid out the real cost difference and the gas line work tankless would need. No pressure either way. We went with a 50 gallon tank because the math made sense for our family. He pulled the permit, did the install the next day, hauled the old one out, and strapped the new one properly for earthquake code. Straightforward company.
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Bahar Ghauomi
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Slow drains in pretty much every sink and tub at the same time, which I now know is not a good sign. Called Precision on a Monday morning and they came to the house by 1pm. He camera scoped the line first, showed me a wall of grease and gunk about thirty feet out, and explained why snaking it would only buy me a few months. They hydrojeted the whole line for a fair price. Drains have been running smoothly. Saved as #1 Plumber lol.
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Diego
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Both units in my duplex were backing up and I knew it was time to get the main line looked at. A friend in Laguna had used Martin before and said to call him. He came out, scoped the line first so we could actually see what was going on in there, and then hydrojetted the whole thing. years of buildup just gone.
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viviane rosales
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These things always seem to happen on the weekend - the outlet from my water heater started leaking. I did a Google search to find a plumber that was open and found Precision Plumbing in Mission Viejo. Within an hour of my call, Martin was at my door. He diagnosed the problem and gave me some options. I chose getting a new water heater and fixing associated fittings. Martin was back out Monday morning to do the work. They were prompt, professional and friendly. They knew I had a tight schedule and they finished earlier than expected. They double checked to make sure everything was working, including replacing the pressure regulator to the house, which probably saved me from an even bigger future repair bill. I highly recommend Precision, for your local plumbing needs. Great service and fair pricing.
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Bethlehem Mitachew
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Martin helped us in the past with a clogged drain and this time with a slab leak. Again, I can't say enough good things about his team. From the start, it was clear they really know their stuff and are incredibly transparent and honest. They were thorough with the inspection and took the time to explain everything in detail. The crew that came to do the repipe was just as impressive. They were hardworking, knowledgeable, and cleaned up after themselves. It was very obvious they knew exactly what they were doing and were great at it!
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Audrey Schreck

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What Does a Water Filtration System Do?

A filtration system treats the water coming into your house before it reaches your taps and appliances. Some units sit at one fixture, like an under-sink filter feeding a kitchen faucet. Others sit near the main line and treat everything, including showers and washing machines.
Different equipment targets different things. Carbon filters reduce chlorine taste and odor. Sediment filters catch grit and rust particles. Softeners and conditioners deal with the calcium and magnesium that leave scale behind. Reverse osmosis units strip out a wider range of dissolved material at a single tap. Which one suits you depends on your water and your plumbing layout.
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Whole-House Water Filtration Installation in Orange County

Scale builds up quietly. It coats the inside of pipes, lines the tank of a water heater, and shortens the life of dishwashers and washing machines. Much of the water reaching Mission Viejo, Lake Forest, and Laguna Niguel travels a long way before it arrives, and it picks up mineral content on the trip.
A whole-house unit treats the supply where it enters the building, so every fixture benefits rather than one sink. Sizing matters more than brand here. A unit rated below your household demand restricts flow, and one rated far above it wastes money. Precision Plumbing measures your incoming pressure and flow, checks how the main line runs, and fits the unit where servicing later does not mean cutting into finished walls. You end up with softer water at every tap and less mineral load working against your appliances. A system tied into a repipe or remodel is scheduled through our Plumbing Contractor side.

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Filtration touches the same pipework as everything else in the building. That is why one plumber sorting the whole system beats juggling several. Here is what else we take on.
Remodels stall when plumbing gets planned late. Moving a kitchen, adding a bathroom.
Water spreading across a floor turns everything else into a secondary problem.
Gurgling kitchen sinks and slow tubs give you warning before a full backup arrives. Grease, hair, soap scale.
Cable work sometimes bores through a blockage without removing much of it, so the clog comes back.
Sewage backing into a shower ranks among the worst things to walk in on. Root intrusion, cracked clay, sagging sections.
A warm patch underfoot and a water bill that jumped usually mean a line failed under the concrete.
Pinhole leaks tend to appear in groups once copper reaches a certain age. Damp drywall, ceiling stains, and gradual pressure loss.
Cold showers arrive with no notice at all. Sediment buildup, failed valves, worn elements, and rusted tanks each end the same way.
Running toilets waste water quietly and push your bill up month after month. Weak flushes, rocking bases.
Dripping taps and shower valves that never settle on a temperature wear on you daily. Swapping fixtures sounds simple.
Adding a range, a fire pit, or a pool heater needs a gas run sized for that appliance. Existing lines need pressure testing
Spotting on glassware, scale inside kettles, and stiff laundry all trace back to mineral content. Filtration and softening equipment reduces.

About Us

Precision Plumbing exists so households across South Orange County get an accurate diagnosis instead of guesswork on their plumbing. Water filtration sits alongside the repair and installation work we handle daily. The goal stays steady: test properly, explain clearly, and fit equipment that suits the building.
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Benefits Of Choosing Our Water Filtration System Installation & Repairs

Trust in this trade gets earned one visit at a time. Six things stand behind the name.
Owner Led

Martin Reagan founded Precision Plumbing and runs the work himself. The person who quotes your job is the person who does it.

01
Licensed Plumber

The business holds California license #778399. You can look that number up on the state board site before booking anything.

02
Local Knowledge

Working the same neighborhoods for years teaches you what fails in houses of a certain age. That shortens diagnosis considerably.

03
Testing First

Water gets tested, and pressure gets measured before anyone recommends equipment. Guesswork tends to produce the wrong-sized unit.

04
Years Of Experience
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Precision Plumbing

Do You Have any questions?

Don’t worry! Send your questions to us.

How A Filtration Job Usually Runs

Three steps from first call to finished install.
One: Initial Inspection

Describe what you notice, whether that is taste, scale, spotting, or a unit that stopped working. Testing tells us what the water actually carries. That result decides the equipment, not a sales sheet.

Two: Choose the Right Setup

Incoming pressure, flow rate, main line position, and available space all shape what fits. Some houses suit a whole-house unit. Others get better value from treating one fixture.

Three: Fit and Test the Unit

Installation includes shut-offs and clearance for future servicing. We pressure-check connections before we finish, and you'll hear how to look after the unit.

Water Filtration System Repair in Orange County

Water tasted the way it did before the unit went in. Pressure dropped throughout the house. A softener cycling at odd hours. Signs like these point to the equipment rather than the supply. A clogged cartridge chokes flow to every fixture downstream. A failed control valve sends untreated water straight past the media. Resin beds wear out, bypass valves stick, and drain lines block.
Our approach starts with testing rather than parts swapping. We check pressure on either side of the unit, inspect the valve and the media, and review whether the original sizing suited the house. Sometimes a seal and a cartridge sort it out. Sometimes the unit has reached the end of its service life, and you deserve to hear that plainly rather than pay twice.

Water Filter Replacement in Orange County

The cartridge in your housing might already be months past due. Filters give no warning when they fill up. They pass more of what they used to catch, and flow tapers off gradually enough that most people stop noticing. Taste tends to creep back first, usually in coffee or drinking water.
Getting the right part matters, and that trips up plenty of people buying online. Micron ratings, thread types, and housing depths all vary between systems. Precision Plumbing identifies what yours takes, fits the replacement, flushes the line, and checks for leaks under pressure. We can note down the interval your unit needs too, so the next change lands on schedule. Water goes back to tasting the way you paid for it.

Under-Sink Filter Installation in Orange County

An under-sink filter treats water at one fixture, usually the kitchen tap. That focus is the point. Treating drinking and cooking water costs far less than treating a whole building, which suits households mainly concerned with taste. Reverse osmosis units add a drain connection and a small storage tank to the job.
Cabinets rarely hold as much room as they appear to. Our plumbers tie into the cold supply, mount the housing at a height you can reach for future cartridge changes, and keep shut-off valves accessible. Connections get pressure-checked before we finish. Better-tasting water arrives at the tap you use most, and the counter stays clear of jugs and pitchers. Seized angle stops found during the fit are replaced under Faucet & Fixture Installation.

Leaking Water Filter Repair in Orange County

A damp cabinet floor, a swollen kickboard, or a stain spreading under the sink all point in the same direction. Filter housings sit on soft seals, and those seals harden with age. Leaks come from a handful of places: the housing O-ring, the head threads, a cracked body, a failed supply connector, or a blocked drain line backing up.
Each cause calls for a different fix, so tightening things and hoping rarely settles it. Locating the actual source comes first, then the repair matches what failed. Precision Plumbing holds California license #778399, and the leak detection work we do elsewhere in the house applies under a sink too. Particle board swells fast once it gets wet, and it rarely returns to shape. Send the model and install date through Contact Us and we will bring the right cartridge.

Book A Water Test Visit

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Contact Us

Reach Precision Plumbing on +1 949-235-1188 or email Mrtnreagan@cox.net to arrange a visit. We will test your supply, look at the plumbing, and lay out what suits your household.

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Filtration Questions People Ask

How much does a filtration system cost?
Cost splits between the equipment and the plumbing work behind it. An under-sink filter sits at the low end. A whole-house softener or a reverse osmosis setup costs more, and running new pipe or adding a drain line adds to that. You get a figure after we see the space and test the water.
Those two do different jobs. Softeners target calcium and magnesium, which cause scale and spotting. Filters target taste, odor, sediment, and chlorine. A water test shows which problem you actually have, and some households benefit from both.
The interval depends on the cartridge type, your water quality, and how much water passes through. Manufacturers publish a rating, often in months or gallons. Falling pressure and returning taste both suggest a change is overdue.
Filtration equipment does not raise pressure, and a clogged unit can lower it. If pressure dropped after installation, the cartridge or the sizing is the likely cause. Pressure problems that predate the unit usually trace back to the regulator or the supply line.
No single unit handles every contaminant. Each technology targets a specific range, which is why the test matters. Combining equipment covers more, though sizing and cost both climb as you add stages.

Areas Where We Take Calls

South Orange County shares much of its water infrastructure, but housing varies widely across it. Older Mission Viejo and Lake Forest tracts run different pipes from newer construction in Ladera Ranch or parts of Irvine, and that changes how filtration equipment gets fitted. Trabuco Canyon lots sit further out with longer service runs. Laguna Niguel and Aliso Viejo fall an easy drive from the shop. Knowing the neighborhood tells us something useful about the plumbing before we arrive. Everything else we cover sits on precisionplumbingoc.com.

Areas We Serve