The table below compares the Big Berkey water purification system with 3 other well-known water filtration systems. On all fronts the Berkey water purification systems win hands down. Berkey Water Filters are not only the most powerful at removing contaminants, but they are also the most cost-effective. The chart below does not take into account that the Berkey Water Filters can last for more than 10 years without having to be replaced, which makes the difference with the other brands even more pronounced.
| Model | Big Berkey w/2 Elements | Aquasana Countertop Filter AQ-4000 | Brita Faucet Filter | Brita Filter Pitcher5 |
|---|---|---|---|---|
| Retail Price | £ 325 | £ 50 | £ 149 | £ 17(avg) |
| Replacement Filter Cost | £ 105/22,700 liters | £ 35/ 2000 liters | £ 45/ 6 months | £ 5.25/ 4 weeks |
| Cost/Liter | .4 p./liter | 1.7 p./liter | n/a | 3.5 p./liter |
| Replacement Filter Cost/Year1 | £ 10,60/yr. | £ 70/yr. | £ 90/yr. | £ 63/yr. |
| 1st Year Cost2 | £ 325 | £ 85 | £ 195 | £ 80 |
| 2nd Year Cost | £ 0 | £ 70 | £ 90 | £ 63 |
| 3rd Year Cost | £ 0 | £ 70 | £ 90 | £ 63 |
| 4th Year Cost | £ 0 | £ 70 | £ 90 | £ 63 |
| 5th Year Cost | £ 0 | £ 70 | £ 90 | £ 63 |
| 5 Year Total Investment | £ 325 | £ 365 | £ 554 | £ 332 |
| Aluminum | up to 95% | No | No | No |
| Copper | up to 95% | No | No | >96% |
| Iron | up to 95% | No | No | No |
| Lead | up to 95% | >99% | >99% | >98% |
| Mercury | up to 95% | >99% | No | >95% |
| Pathogenic Bacteria | > 99.99999% | No | No | No |
| Cysts | > 99.99999% | >99.99% | >99% | No |
| Parasites | > 99.99999% | >99.99% | No | No |
| E.Coli | > 99.99999% | No | No | No |
| Chlorine | BDL3 | >99% | >99% | >96% |
| MTBE | BDL3 | >99% | No | No |
| THMs | BDL3 | >99% | No | No |
| Nitrates & Nitrites | Reduced4 | No | No | No |
| VOCs | BDL3 | >99% | No | No |
| Alachor | BDL3 | >98% | >99% | No |
| Atrazine | BDL3 | >97% | >92% | No |
| Benzene | BDL3 | >99% | >98% | No |
| Lindane | BDL3 | >99% | >99% | No |
| Radon 222 | BDL3 | No | No | No |
