Reverse Osmosis Systems

Reverse Osmosis is a basic and natural filtration water purification method. Osmosis is a process that occurs in nature on a continuous basis and is the easiest and most cost effective method for water purification in home and business. Because of production and storage capacity limitations it is typically used as a potable source. In addition, and due to its purity, RO water is an aggressive absorbent and must be channeled and dispensed through a dedicated system.

More so than any other basic water purification device or filtration unit, R/O does make a noticeable and measurable difference in the home. Unless advertised as such, most bottled water available today has been purified by this method. Typical home installations include a dedicated faucet on the kitchen sink and hook up to the fridge for cold water dispensing and ice-making.

Most R/O systems will eliminate at least 85% of impurities and are not selective. Total Dissolved Solids is the basic measurement of water purity, and for example, if given a source water of 475 ppm TDS, the residential R/O System will provide for a reading of below 50 ppm TDS.

Residential R/O's are nearly maintenance free. While there are no moving parts, filters do need to be changed, usually on an annual basis. While the R/O membrane needs to be changed every 3 years. There are circumstances where these changes need to take place more often: 1) Lack of an Ion Exchange System/Pre-treatment and 2) Consumption/Usage.

Microline Reverse Osmosis

We proudly offer the Microline TFC 335 System, which is manufactured in the USA. Features which separate the system from others include the patented manifold plate which directs the flow of water through each of the filtration steps, thus eliminating the need for individual connections. In addition, the system provides for less waste than others. When the holding tank is full, the automatic shut-off device is triggered and signals the system to automatically cease production until more supply is needed.

Other Features include:

  • Replacement filters are readily available to the public
  • Replacement filters are non-proprietary and modestly priced
  • T.F.C.: Thin Film Membrane provides for higher capacity/faster fill-age
  • Prefilter is sediment and carbon to aid in Chlorine removal, (City Water Applications) and prolonging life of the R/O memebrane.

To learn more about the Microline TFC-335:


There are typically (2) location options when installing the R/O system. When space and access is available the best choice is on a basement wall in the mechanical room below or nearly below the kitchen. This provides for easy filter changes, and is less space intrusive than the under-sink location. The basic installation includes provides for sink and fridge dispensing. Other locations can include rest room sinks, recreation room icemakers/bar sinks, and even the garage to provide for a spot free wash rinse.

Factors that limit installation and performance are run length and pitch of the feed line, drain availability, space, and access to inner walls. At time of estimate, we always look for the best available space that would be the least intrusive, provide good access, and will allow the system to perform to its potential.

Performance Options

  • Faucets (TFC 335 comes with a chrome faucet, alternative faucets are available at an cost.)
  • Production Pumps (Used to boost production upwards of the 50 GPD capacity of the TFC 335.)
  • Demand Pumps (Used to boost pressure at point of dispensing, some refrigerators/ice makers require more pressure than what is available from the pressurized tank bladder.)
  • Larger Capacity Storage Tanks: The TFC 335 comes equipped with a 2 gallon tank, which provides for a little more than a gallon of water. If additional availability is required, we also offer 4 & 10 gallon tanks.

Healthy Solutions For Your Water

Specializing in water conditioning and filtration systems, Coastal Valley Water Company in Valparaiso, Indiana is your trusted source for healthy water. Unlike other water conditioning companies, we're locally owned and operated, and stay up-to-date on the latest industry trends and technological advancements with filtration systems. We're enhancing the quality and safety of your water, 1 glass at a time.

Phone: (219) 476-1135