💧 Water Filter Calculator
Find the right filter size, flow rate & capacity for your home or building
| Filter Type | Max Flow (GPM) | Cartridge Life | Best For | Change Interval |
|---|---|---|---|---|
| Sediment (5 micron) | 10–20 | 25,000–50,000 gal | Dirt, sand, rust | 3–6 months |
| Carbon Block | 0.5–10 | 10,000–50,000 gal | Chlorine, taste, VOCs | 6–12 months |
| Catalytic Carbon | 5–15 | 50,000–100,000 gal | Chloramines, H2S | 12–24 months |
| RO Membrane | 0.1–0.5 | ~75 GPD output | TDS, heavy metals, fluoride | 2–5 years |
| Water Softener Resin | 5–15 | 750,000–1M gal | Hardness (Ca, Mg) | Regenerates with salt |
| UV System | 4–15 | Lamp: 9,000 hrs | Bacteria, viruses, cysts | Annual lamp swap |
| KDF Media | 5–12 | 500,000+ gal | Heavy metals, chlorine, H2S | 5–10 years |
| Ceramic | 0.25–1 | 50,000–100,000 gal | Bacteria, protozoa, sediment | Clean & re-use; replace 1–3 yr |
| Household | Avg GPD (US) | Avg LPD (Metric) | Peak GPM Needed | Recommended Housing |
|---|---|---|---|---|
| 1 Person (studio) | 50–80 GPD | 190–300 LPD | 3–5 GPM | 10" Standard |
| 2 People | 80–150 GPD | 300–570 LPD | 4–6 GPM | 10" Standard |
| 3–4 People | 150–350 GPD | 570–1,325 LPD | 5–8 GPM | 20" Standard |
| 5–6 People | 350–500 GPD | 1,325–1,893 LPD | 7–10 GPM | Big Blue 20" |
| 7–10 People | 500–800 GPD | 1,893–3,028 LPD | 10–15 GPM | Big Blue 20" |
| Office / Light Commercial | 800–2,000 GPD | 3,028–7,571 LPD | 15–25 GPM | Commercial |
| Restaurant / Cafe | 2,000–5,000 GPD | 7,571–18,927 LPD | 20–40 GPM | Commercial |
| Daily Use (GPD) | 10K Gal Cartridge | 25K Gal Cartridge | 50K Gal Cartridge | 100K Gal Cartridge |
|---|---|---|---|---|
| 50 GPD | 200 days | 500 days (1.4 yr) | 1,000 days (2.7 yr) | 2,000 days (5.5 yr) |
| 100 GPD | 100 days | 250 days (8.3 mo) | 500 days (1.4 yr) | 1,000 days (2.7 yr) |
| 200 GPD | 50 days | 125 days (4.2 mo) | 250 days (8.3 mo) | 500 days (1.4 yr) |
| 350 GPD | 29 days | 71 days (2.4 mo) | 143 days (4.8 mo) | 286 days (9.5 mo) |
| 500 GPD | 20 days | 50 days (1.7 mo) | 100 days (3.3 mo) | 200 days (6.7 mo) |
| 1,000 GPD | 10 days | 25 days | 50 days (1.7 mo) | 100 days (3.3 mo) |
| Imperial | Metric Equivalent | Imperial | Metric Equivalent |
|---|---|---|---|
| 1 gallon (US) | 3.785 litres | 1 GPM | 3.785 LPM |
| 1 GPD | 3.785 LPD | 1 GPM | 0.0631 L/s |
| 100 gallons | 378.5 litres | 10 GPM | 37.85 LPM |
| 1,000 gallons | 3,785 litres | 1 cubic foot | 7.48 gallons |
Improve the quality of water it is possible by means of advanced filter systems. Such filters remove dirt and give great-tasting plastic-free hydration. The Berkey Water Filter removes PFAS, heavy metals, chlorine and other chemicals from water and at the same time leave in it useful minerals that the body needs.
By means of those systems families, travelers and off-grid families can rule their hydration. They deliver consistently good result without require electricity so they are really versatile. USA Berkey Filters also offer lifetime warranty for almost all Berkey products.
How to Choose a Good Water Filter
Culligan ZeroWater is other way filter water. Its advanced 5-stage technology uses ion-exchange screening to remove 99.9% of the total settled solids from tap water. After that stays almost nothing except very pure delicious water.
ZeroWater filters are usable in pot or in home dispenser and no permanent installation needed. Those filters even can filter out fluoride. Some folks use ZeroWater dispensers and pots together.
Also systems of reverse osmosis are very popular. Reverse osmosis system with remineralization can make remarkable difference. Usually such systems carry one or several sediment filters and filters from activated carbon.
The initial treatment by means of activated carbon captures and remove chlorine, VOCs and trihalomethanes. During the reverse osmosis tap water is pushed under pressure through semipermeable skin. That skin blocks any particles or dirt that is bigger than water molecules.
By means of that process it is possible to filter even very tiny causes for instance viruses and bacteria. The AquaTru Carafe Countertop Water Purifier are compact 4-stage reverse osmosis system. It removes 84 dirts including fluoride lead and forever chemicals.
Even so some folks reckon that reverse osmosis systems waste much water and cost a lot to take care.
Aquasana whole house water filters provide healthy delicious water from every tap in the house. You tested them and they reduce lead and chlorine. For more particular needs Hydroviv offer customized water filters that target arsenic, lead and PFAS.
The installation is easy and usually last 15 minutes or less. If water carries dangerous chemicals or germs matter to choose filter that removes them. Folks that receives water from rainwater collection system or private well should test their water at least once yearly about dangerous chemicals and germs.
