Clean, great-tasting drinking water starts with a professionally installed reverse osmosis system. National Water Service provides expert RO system installation, service, and maintenance across Maryland, Washington DC, and Northern Virginia.
A reverse osmosis water system is one of the most effective water filtration technologies available for improving drinking water quality. It works by forcing water through a semi-permeable membrane that removes dissolved contaminants, impurities, and unwanted minerals.
Reverse osmosis systems are commonly installed under the sink or as part of a dedicated drinking water system and are ideal for both well water and city water applications.
A properly installed RO system can help reduce:
Lead and heavy metals
Chlorine and chloramine
PFAS and man-made contaminants
Nitrates and arsenic
Unpleasant taste and odors
A reverse osmosis water system is an excellent solution if you:
Want cleaner, better-tasting drinking water
Have concerns about contaminants in well or city water
Notice unpleasant taste, odor, or cloudiness
Want bottled-water quality at your tap
Have children, elderly family members, or health concerns
Many homeowners pair a reverse osmosis system with whole-house filtration or UV water treatment for complete protection.
Homeowners with private wells use well water filtration systems combat all water impurities to make it suitable for use.
Reverse osmosis systems are effective for both water sources, but they serve different purposes:
Removes dissolved solids and metals
Improves taste and odor
Often paired with UV water treatment for bacteria protection
Excellent final-stage drinking water solution
Reduces chlorine and chemical byproducts
Improves taste and clarity
Protects against aging municipal infrastructure
Consistent, high-quality drinking water
Find out more Well Water vs City Water here. Not sure what’s in your water? Start with a professional water test.
At National Water Service, our mission is to give you clean, safe, great-tasting water — backed by over 47 years of trusted experience.
We analyze your water to determine what contaminants are present and whether reverse osmosis is the best solution.
We recommend a non-proprietary reverse osmosis system sized correctly for your needs — no locked-in parts or filters.
Our certified technicians install your RO system cleanly and efficiently, ensuring optimal performance.
We provide filter replacements, membrane service, and system inspections to keep your RO system performing at its best.
Under-sink reverse osmosis systems
Basement reverse osmosis systems
Tankless reverse osmosis systems
Residential drinking water RO systems
Commercial reverse osmosis systems
RO systems for well water applications
RO systems paired with water softeners or UV treatment
All systems are non-proprietary, allowing long-term service flexibility.
The cost of a reverse osmosis water system depends on:
Water quality and contamination level
System size and capacity
Installation requirements
Whether pre-filtration or post-treatment is needed
While RO systems require periodic filter and membrane replacement, they are a cost-effective alternative to bottled water and provide long-term health and convenience benefits.
Reverse osmosis systems remove dissolved solids, heavy metals, chlorine, PFAS, nitrates, and many chemical contaminants.
Yes. RO systems are commonly used with well water and often paired with UV disinfection for complete protection.
Filters are typically replaced every 6–12 months, while membranes last several years depending on water quality. For more information visit our Maintenance Service.
Modern RO systems are designed to minimize waste while maximizing filtration efficiency.
Professional installation ensures proper performance, prevents leaks, and protects your plumbing system.
The installation cost of a reverse osmosis system varies based on an under-the-sink unit, a whole-home unit, and the current state of your pipes, plumbing, etc. National Water Service offers free quotes to help determine what the cost would be to install a new reverse osmosis system in your home.
With over 47+ years of experience in water repair and management, we are proud to offer dedicated Water Techs & Master Plumbers to homes and businesses. Get affordable pricing, competitive quotes, and quality materials that last.
