Choosing a Water Treatment System

Water Testing

Water testing is highly recommended.  Can you imagine your doctor attempting to give you a diagnosis without first giving you a physical exam?

Water systems must also be diagnosed before determing the treatment method.  The system you require depends on what’s in your water. This is why our customers often refer to us at their “water doctor”.

Testing Your Water

Model: DFTK

Safety Zone Water Systems provides professional water treatment testing kits.  Our kits test for water hardness, Iron, pH, Chlorine and total dissolved solids. They are ideal for water treatment professionals.

deluxe water analysis field test kit
Professional Water Testing Kit

Request to Purchase a Test Kit

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Determining the Quality of Your Water


Only 0.3 ppm free chlorine is needed for proper disinfection. Typically 2 to 4 ppm of total Chlorine is found in municipal water. Excessive chlorine levels should be avoided.


Testing for pH is important. This is because low pH, or Acidic water, can cause corrosion to occur, which may result in pin holes in copper pipes and the corrosion may Lead for plumbing fixtures into your water.

Water Hardness

7 grains of water hardness is considered “hard” water. Scale may form however, at moderate levels of hardness. For this reason a water softener is recommended at 3 PPM of hardness or more.

Hydrogen Sulfide

If you smell rotten egg orders with well water you have Hydrogen Sulfide, and a Sulfur filter is recommended. If you smell “rotten egg” odors with city water, this odor may be coming from your water heater (particularly if new).


Total Dissolved Solids is the sum total of all solids, which are dissolved. These dissolved solids may include Lead, Mercury, Zinc and other heavy metals, Arsenic, Fluoride, Nitrates and other impurities. The TDS of bottled water produced by reverse osmosis is typically below 10 PPM. The lower the TDS, the better since harmful impurities are part of TDS.


If you suspect your well water is not safe, testing for bacteria is highly recommended. You can take a water sample to a local lab or purchase a bacteria test kit. This test takes two days to get results, however. If you are on well water, look for slime in toilets and see if there is a film on the water in the water tank, back of a toilet. This scum may be a sign bacteria is present.


0.3 PPM of Clearwater Iron will cause staining.


The MCL* for Nitrates is 10 PPM.


The MCL* for Arsenic is 10 PPB.


300 picocuries per liter (in drinking water)

*MCL: the maximum content level, as regulated by the EPA

Selecting Your System

Once your water has been tested, and your water quality is determined, you can select your system.  Besides determining the objectives you wish to accomplish to improve the quality of your water, selecting your system depends on where you get your water, whether from a municipality or community water supply, or if you get your water from a private well.  In some circumstances, if you’re unable to implement a whole-house water treatment system, we offer under-sink drinking water filters.

City Water Systems
well water treatment systems
Well Water Systems
Under-Sink Drinking Water Systems