- Arsenic naturally occurs in the ground as Arsenic 3. In order to be filtered out, it must be converted to Arsenic 5 by oxidizing it with ozone or oxygen. Arsenic 5 can then be substantially removed with filtration.
- An ECOsmarte system will reduce the arsenic level, but will not remove it all. If the arsenic level is borderline, the ECOsmarte system alone might be sufficient to keep the level within the approved safe range without the need to add an arsenic system.
- A dedicated arsenic system will remove about 80% of the arsenic.
- A reverse osmosis system will remove 100%.
- If your water test results show the arsenic level to be 10 parts (0.01) or above, which is the approved EPA tolerance level for safety, ECOsmarte will include an additional tank with a special arsenic-removing media as a part of your complete system for an additional cost of about $700.
- Arsenic treatment is expensive. A full system normally costs around $1600. Once every one to fifteen years, depending on the amount of arsenic and the volume of water used, the arsenic media must be replaced, at a cost of about $1200 each time. The media itself is nearly $800, plus gravel, a new basket and riser, shipping, and labor. If water usage is high and the arsenic level is high, it might be necessary to re-bed the tank every year or two; if the levels are low, then less often.