Key WaterFed® Terms

Amy LavinIndustry, WaterFed®, Window CleaningLeave a Comment

TDS– Total dissolved solids

Measured in parts per million and it measures the impurity level of your water. The average is 100 ppm, but varies widely.

Di– deionization

Ro– Reverse osmosis

CS– carbon sediment

Have you ever noticed WaterFed® exists in a state of abbreviations? TDS. RO. DI. CS. Let’s break them down.

TDS– Total dissolved solids. This refers to the amount of impurities that exist in the liquid being tested. In our case, it’s the tap water that comes from the client’s house. Levels of impurities range drastically from one place to the next. They are measured in ppm, or parts per million. Higher ppm equates to higher levels of impurities. We base all of our WaterFed® system’s stats off of an average 100ppm reading, which gives us a base to make estimations off of (like how many gallons of water your system can filter before a filter change is needed or how long each individual filter will work) and gives you a way to compare them apple to apples. Our pure water systems, however, are made to work for all TDS levels. It is best practice to test your waters TDS level twice before beginning a job.

Pro Tip: Rinse the top of your TDS meter with purified water before you measure and again in between your first and second TDS measurement.

RO– Reverse Osmosis. This is one of the filters you can find on a multi-stage system. The reverse osmosis filter is a semi-permeable membrane that captures anything larger than the water molecule itself. About 95% of impurities, including naturally occurring minerals, are taken out of the water with the RO filter. These impurities are flushed through a bypass line. This filter is extremely efficient, which is why multi-stage WFP systems are so much less expensive to operate.

DI– Deionization. This filter can be a stand alone system or work in tandem with the RO and CS filter in a multi-stage system. This filter made of small beads (ion exchange beads) which are partially positively charged and partially negatively charged (that’s what the 50/50 means). The charges of these beads attract any impurities and make them “stick.” Itself, DI systems will purify water and meet your or your client’s expectations. A singular DI filter is able to act as its own system because it is able to remove the smallest impurities from the water. With that said, working with a multi-stage system allows your DI filter to work with the other filters and therefore last significantly longer. In Multi-Stage, DI is the last filter and it polishes off the last 5% left behind by the RO.

CS– Carbon Sediment. These are actually two different filters but are usually grouped together. The sediment filter removes any sediment or larger impurity from the water before it heads to the other filters.

The Carbon filter is very important for multi-stage systems. This filter is common in drinking water filters because it removes foul odors, a small amount of sediment, and (most importantly for our purposes) chlorine. Of course, in a WaterFed® system it is important to take out any and all impurities for the expected results but it is especially important to remove chlorine prior to the RO filter because they are not chlorine tolerant. By removing the larger impurities and chlorine, the RO and the DI filter will thrive.

Are there any other WaterFed® terms you’d like to know? Comment Below.

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