Water Filtration Systems in San Diego, CA
San Diego Water Purification Specialists Since 2006.
Installation | Repair | Maintenance
Purifying San Diego’s Tap Water
If you’re concerned about chemicals, hard minerals, or contaminants in your water, you’re not alone. San Diego’s water is some of the hardest and most heavily treated in the nation. At Carini Home Services, we specialize in whole house water filtration systems, including reverse osmosis systems, carbon-based water filters, and other advanced home water filtration systems that deliver clean, healthy water from every tap. When you are ready to upgrade from your Brita water filter to a reverse osmosis water filter or a point-of-use system that installs under your sink, we’ll help you choose the best water filtration solution for your home.
Water Filter Installation
Our whole home water filtration systems are designed to remove chlorine, sediment, VOCs, and even fluoride—providing better-tasting water for drinking, cooking, bathing, and washing clothes. These systems connect to your main water line and purify every drop that flows into your home.
We install:
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Whole house carbon filters for chlorine, odor, and chemical removal
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Add-on fluoride filters and heavy metal reduction units
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Ultraviolet (UV) light filtration to kill bacteria and viruses
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Sediment pre-filters for rust and particulate removal
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Reverse osmosis system upgrades for enhanced purification
💡 During installation, we often inspect old or corroded angle stops (also called sink shut-off valves or quarter-turn valves) to ensure long-term reliability and easy maintenance access.
Water Filter Repair, Replacement, and Maintenance
Already have a system in place? We service and maintain a wide variety of home water filters and reverse osmosis systems, whether you installed them with us or not.
Our services include:
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Filter cartridge replacement (carbon, sediment, fluoride, VOC)
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Reverse osmosis membrane replacement
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Diagnosing taste, pressure, or flow issues
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Leak repair and valve replacement
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Annual system tune-ups and sanitization
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Angle stop and shut-off valve upgrades for under-sink systems
Water Filtration System San Diego
Reverse Osmosis Systems
Under-sink RO Filter
HVAC and Plumbing
Water Softener System in San Diego
Water softener we installed for a happy customer in San Diego
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Reverse Osmosis Systems
Looking for the best drinking water system? Reverse osmosis (RO) is one of the most effective ways to remove a wide range of impurities from your water, including:
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Fluoride
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Lead
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Arsenic
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PFAS (“forever chemicals”)
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Sodium
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Pharmaceuticals
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Chlorine and chloramine
We install both under-sink reverse osmosis water filters and whole home RO systems with multi-stage filtration, pressurized tanks, and leak protection. If you’re switching from bottled water or systems like Berkey or Brita, an RO filter can be a low-maintenance upgrade that saves money and reduces plastic waste.
Water Testing in San Diego
Not sure what’s in your water? We offer free in-home water testing to help you understand exactly what you’re dealing with—whether it’s hardness, chlorine, fluoride, sediment, or contaminants like lead or PFAS.
Our licensed plumbers will:
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Test your water’s hardness level (grains per gallon)
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Check for chlorine, iron, TDS (total dissolved solids)
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Explain what each result means for your home and health
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Recommend the right water filtration or reverse osmosis system if needed
💡 Free Water Testing with any plumbing service call. Mention you would like your water tested while booking any plumbing repair and our licensed plumber will provide a complimentary tap water test. Or visit EWG to see what contaminants were found, by zip code.
Types of Water Purifiers Compared
| System Type | Removes Chemicals | Removes Fluoride | Removes Minerals | Best For |
|---|---|---|---|---|
| Whole House Carbon Filter | ✅ Yes | Optional | ❌ No | City water, chlorine taste/smell |
| Reverse Osmosis (RO) | ✅ Yes | ✅ Yes | ✅ Yes | Drinking water, health-conscious homes |
| Gravity Filters (e.g. Berkey) | ✅ Yes | ✅ Yes | ✅ Yes (partially) | Portable or countertop use |
| Pitcher Filters (e.g. Brita) | ✅ Limited | ❌ No | ❌ No | Low-cost basic filtration |
Why San Diego Homeowners Trust Carini
✔️ Licensed, experienced, and family-owned since 2006
✔️ Local knowledge of San Diego’s hard water conditions
✔️ Transparent quotes—no pushy upsells
✔️ Repairs, maintenance, and full installations
✔️ Available throughout San Diego County
How Much Do Water Filtration Systems Cost?
The cost of a water filtration system in San Diego depends on a few different things. Such as your home’s size, existing plumbing, current water quality and goals, and whether you’re filtering all the water in your home or just the drinking water at one sink.
Here’s a general breakdown:
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Whole House Water Filters: $1,500–$9,000+
These systems connect to your main water line and treat all incoming water. Prices vary based on the number of filtration stages (carbon, fluoride, UV, etc.), flow rate, brand, and whether installation requires plumbing upgrades or permits. -
Reverse Osmosis Systems: $600–$1,200+
Designed for under-sink or point-of-use applications, RO systems remove up to 99% of contaminants. Costs depend on tank size, number of filtration stages, filter lifespan, and whether an alkaline remineralizer is included. -
Filter Replacements and Service: $100–$400+
Ongoing maintenance includes replacing carbon blocks, RO membranes, sediment pre-filters, and UV bulbs—typically every 6 to 24 months, depending on usage and water quality. -
Financing Available:
We offer flexible monthly financing options to make clean water affordable for every household.
💡 Ask about current water filtration rebates available in San Diego! Programs may cover part of the cost of approved water-saving and purification systems.
Water Purifier Systems
Evince Insight
The Evince Insight with Nuvia Scale Shield is a water filtration system that does not use salt. The Insight reverses the polarity of calcium carbonate so it does not bond to plumbing, fixtures and appliances. It also uses carbon go remove contaminants.
Additional Information
- Utilizes a precision programmed backwash cycle (ppbc)
- Clean, great tasting water – upholds the highest levels of environmental responsibility
- Reduces exposure to chemicals
- Economically improves the quality of water
- Extends the life of pipes by inhibiting scale build up
- Eliminates the need for harsh soaps, which contain unhealthy and damaging chemicals
- Adds no chemicals to the environment
- Improves the efficiency and longevity of water using appliances
- Reduces and removes chlorine and chloramines, resulting in better tasting, smelling and healthier water
Evince Elevate
The Evince Elevate is a water softening system which uses salt to remove hard water and industrial grade carbon to remove contaminants.
Additional Information
- Dynamic regeneration, a green technology, saves both salt, and water waste
- Economically improves the quality of water
- Reduces exposure to chemicals
- Improves the efficiency and longevity of water using appliances
- Extends the life of pipes by inhibiting scale build up
- Eliminates the need for harsh soaps, which contain unhealthy and damaging chemicals
Evince Elite
The Evince Elite uses salt to remove calcium carbonate, which protects plumbing, fixtures and water bearing appliances.
Additional Information
- Dynamic regeneration, a green technology, saves both salt, and water waste
- Economically improves the quality of water
- Improves the efficiency and longevity of water using appliances
- Extends the life of pipes by inhibiting scale build up
- Eliminates the need for harsh soaps, which contain unhealthy and damaging chemicals
Nuvia Thermo Guard
Nuvia Thermo Guard is a point-of-use tankless water heater filtration system for the reduction of sediment and limescale build-up. This system utilizes a proprietary filtration and media blend, protecting water heaters and extends longevity.
Mitigating scale build-up extends the life of both traditional and tankless water heaters. Left untreated, scale build-up results in significant damage, costly repairs, and higher energy costs. Just 1mm of scale on a heating coil can raise energy costs by 15%! Most, if not all, water heater manufacturers require scale-inhibition treatment in hard water areas or their warranty may be voided. When it fails, the high cost of replacement falls on the consumer alone!
Additional Information
Features
- Protects Tankless Water Heaters
- Single Cartridge, Two-Stage Water Filtration
- Meets Tankless OEM Warranty Specifications
- Designed for All Gas or Electric Water Heaters
- High-Flow Rates up to 40 GPM
- 5 Micron Sediment Filter
- For Residential Use
- Easy Installation
2-Stage Filtration Process
Stage 1 | NW-Sediment Filtration
Stage 2 | NW-Scale Reduction Filtration
Nuvia Clarity 2100 QC
Premium grade filters, superior technologies, extensive testing, quality-control, and being backed by one of the industry’s most comprehensive warranties, all contribute to Nuvia’s unrelenting dedication to delivering delicious drinking water!
Unobtrusive and high-tech, the Nuvia Clarity 2100 QC is a compact point-of-use system and an ideal choice for clean, high-quality drinking water. The durable, ultra-slim system utilizes an advanced membrane that removes impurities as small as an atom, delivering clean, safe, and delicious water.
Additional Information
4-STAGE FILTRATION PROCESS
Stage 1 | NW-Sediment Filtration
Stage 2 | NW-Activated Pre-Carbon Filtration
Stage 3 | NW-Reverse Osmosis (RO) Filtration
Stage 4 | NW-Activated Post-Carbon Filtration
Nuvia Summit™
A healthy lifestyle requires attention to every detail. That’s why at Nuvia Water, details matter. With the introduction of the Nuvia Summit, we support your health-conscious lifestyle through the provision of clean, antioxidant-rich, high pH water.
The Nuvia Summit Alkaline Filter will alkalize and vitalize your drinking water. The filter enhances water by adding essential alkaline minerals and substantially increasing the pH value resulting in superior hydration.
Additional Information
- Alkaline filtration
- Increased oxygen & hydrogen content
- Innovative quick change (QC) twist-and-lock filter design
- Quick connect fittings
- Durable low-maintenance, reliable design
Areas We Provide Water Treatment Services
If you live in San Diego County, chances are your home is affected by very hard water—often exceeding 16 grains per gallon. That level of mineral content can damage your plumbing, water heater, and appliances over time, especially in older homes or coastal areas with aging infrastructure.
At Carini, we specialize in water filtration system installations in:
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Coastal neighborhoods like La Jolla, Del Mar, and Coronado, where high-value homes need protection from scale buildup on fixtures, tile, and luxury appliances.
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Historic communities such as Mission Hills, North Park, and Hillcrest, where aging copper and galvanized pipes are especially vulnerable to corrosion from hard water.
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North County cities like Oceanside, Encinitas, and Carlsbad, where water quality can vary greatly depending on the municipal source.
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East County neighborhoods including El Cajon, La Mesa, and Lakeside, where extremely hard water is common and whole-home filtration systems are often recommended.
Wherever you live in San Diego County, we can test your water, identify what’s in it, and help you choose the best water filter or reverse osmosis system for your home.
Additional Water Treatment
We also install and maintain water softener systems, including salt-free and salt-based systems, to help eliminate hard minerals like calcium and magnesium. If you’re looking for soft water system installation, visit our water softener page to learn more and compare options. Interested in raising the pH of your drinking water? Water alkalizers can be added to your filtration system to restore beneficial minerals and increase alkalinity after reverse osmosis or heavy filtration. Alkalized water may support better hydration and neutralize acidity, making it a popular choice for health-conscious homeowners.
Call Carini Home Services Today
Your tap water may look clear, but it can still contain chlorine, sediment, hard minerals, and harmful contaminants. With a professionally installed water purification system, you’ll enjoy better-tasting water, protect your plumbing, and support your family’s health—every time you turn on the tap.
Whether you’re looking for a reverse osmosis system, a whole house water filter, or a full home water purification setup, Carini Home Services delivers expert installation, reliable service, and real results you can taste.
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