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Application: This system should be employed as a whole house application where low to moderate ferrous (dissolved) iron, manganese, or hydrogen sulfide contamination is known or expected. This filter will also remove ferric iron through mechanical filtration, although a sediment filter may be a more cost effective choice. This filter is most effective where iron contamination level is less than 3 ppm (and no greater than 5 ppm) or the hydrogen sulfide level is less than about 2 ppm. While the filter will indeed remove these contaminants when these levels are exceeded, the filter life expectancy may be shortened significantly, and contaminant removal may be incomplete. If a combination of iron, manganese, and hydrogen sulfide are present, you must consider the "iron equivallent" level when determining if this filter will work effectively in your circumstance (see below). Best contaminant removal rates are achieved where the pH is 7.0 or higher, although satisfactory contaminant removal can generally be achieved at lower pH levels (6.8 to 6.9) under most conditions. This filter is not recommended where pH levels are less than 6.8.
The life of the filter depends on the contamination level ("iron equivalent") and amount of water consumed on a daily basis. You can get a good idea of how long a filter will last in your case by using the chart below.
"Iron Equivalent" is calculated as follows: (Iron level) + (2 x Manganese level) + (3 x Hydrogen sulfide level)
If your level of Hydrogen sulfide is unknown (it is hard to accurately test for) and you have a noticeable "rotten egg" odor, assume a Hydrogen sulfide level of 0.5 ppm. If the rotten egg odor is severe, assume a level of 1.0 ppm.
Example: Test results are 0.8 ppm iron, 0.2 ppm manganese, and you have a rotten egg smell in your water.
Iron Equivalent = (0.8) + ( 2 x 0.2) + (3 x 0.5) = 2.7
Approximate Life of Filter Cartridge
| Iron Equivalent Level in Water |
Total Gallons
Water Used |
250 GPD
(four people) |
125 GPD
(two people) |
75 GPD
(one person) |
| |
|
|
|
|
| 5 ppm |
16,000 gal |
64 days |
128 days |
256 days |
| 4 ppm |
20,000 gal |
80 days |
160 days |
320 days |
| 3 ppm |
26,000 gal |
104 days |
208 days |
416 days |
| 2 ppm |
40,000 gal |
160 days |
320 days |
640 days |
| 1 ppm |
80,000 gal |
320 days |
640 days |
1280 days |
| 0.5 ppm |
160,000 gal |
640 days |
1280 days |
n/a |
| *Test results provided by cartridge manufacturer (for WH5+ model with carbon post-filter) |
What types of contaminants are you dealing with?
| Problem |
Likely Cause |
| rusty red or brown staining of fixtures or laundry and/or your water has a metallic taste |
excess iron |
| black staining of fixtures or laundry |
excess manganese |
| rotten egg smell from water |
Hydrogen sulfide (H2S) |
How it Works: Soluble iron (ferrous) and manganese are oxidized and precipitated by contact with higher oxides of manganese on the greensand granules. The hydrogen sulfide is reduced by oxidation to an insoluble sulfur precipitate. The precipitates are then filtered. Ferric iron is removed by mechnical filtration.
| Specifications & Operating Conditions: |
| Housing Material
| Polypropylene |
| Location of Manufacture
| USA |
| Maximum Recommended Flow Rate
| 7 Gallons Per Minute (27 LPM) |
| Recommended Operating Temp. Range:
| 40-100°F (4.4 to 37°C) |
| Recommended pH level:
| 7.0 or higher |
| Maximum Recommended "Iron Equivalent":
| 5 ppm (mg/l) - see above |
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Drinking Water Filters
AquasanaCanada.com, P.O. Box 14004, RPO Mimico, Toronto, ON M8V 4A2