use in conjunction with the Berkey charcoal filters, post Hurricane Melissa essential for pure, clean, tasty drinking water for almost any source.

Excellent quality.

Berkey is the only way to go for clean water. No others compare

you get what you pay for. the only company that has proven filters. so you could go with cheaper options but there is nothing to prove those companies are actually filtering the water. thats why these are so expensive. good quality and durability. waterflow is good. i had someone put lemons in the top of my filter so i had to remove and clean them out which was easy cleaning.

Good quality albeit pricey

Authentic Berkey filters.I received these filters a couple days ago and the only issue I encountered was due to operator error. 🤣 I misread the instructions and forgot to remove the black plugs from each end of the first filter. Water sprayed everywhere while I tried to get water to go through a capped filter!One thing I did differently...Instructions say to run water through one end and after the water runs clear, repeat this step on the opposite end of the filter and then you're done prepping the filters. After I ran water through both ends, I went back to the first end and tried it again and it was cloudy again so I ran it some more and then did the same for the other side. I flipped back and forth 3-4 times until I didn't see cloudiness.After I installed the new white filters I noticed a faster drip rate. (I was way overdue for replacing these. )Tips:1) Our black Berkey filters aren't due for replacement yet so I didn't not remove them from the upper tank because I didn't want to mess with thread integrity of the plastic screws. Also, there's no need to remove the black filters when swapping out the white filters.2) Berkey recommends scrubbing the outside of the black filters occasionally to maintain filter life. I've never done this, but using a new kitchen brush and water (no soap!) , I scrubbed the sides of the black filters and then rinsed them and the upper chamber several times.

Helps to keep out floride in water, works with Berkey

I think I paid too much.I like these filters, but why so expensive?

I am the person that usually gets generic brands for disposable things but I don't compromise when it comes about water quality. These filters are absolutely worth it. I don't own Berkley system though, I got a generic brand off Amazon but use these genuine filters because I am confident my family will get quality water. last a long time.

Immediately could taste the difference— it’s crazy how much peace of mind berkey products provide, it’s worth the expense !

Easy to install and my water has never tasted better. Got this with this new filter with the Berkey system and I’m very happy with my purchase. Side note/ side story. I have been battling a UTI for months. Two rounds of antibiotics and noting touched it. Two weeks after drinking from this filtering system it was completely gone. They were thinking it was my kidneys. I believe this helped, clean water does magic!

Excelente

I originally purchased an off brand and they didn't fit the charcoals filters soi returned them and picked up the Berkey filters. This was a replacement set so I'm used to using them. They will make water taste better and filter out most of the floride poison. I dropoed one star due to the over bloated price.

Was back ordered on Berkey's web page (several weeks) so necessitated ordering on Amazon. They were certified Berkey filters. So important to know with so many counterfeits on line. Berkey is one of the best and one of the very few filters for non potable water! Can use any water and it will filter spores, bacteria etc. Not that I WOULD TRY, but nice to know incase of total power failure, and loss of water pressure.

Great, delivered quickly and was as described. Will do business with again.

I had to replace my barely used PF-2 fluoride filters in my Royal Berkey because I allowed them to dry out completely through a use hiatus. It is frustrating that this particular MAJOR CAVEAT is not mentioned more clearly for the consumers, and I'm sure that many Berkey owners end up resuming the use of the dried out filters unknowingly. I only found out that PF-2 filters MUST be discarded after it's been allowed to dry out after I contacted a Berkey support. On a further web search, if you're not actively using the PF-2 filters, you need to remove them and store it in the refrigerator (not freezer) for only short term to prevent them drying out and to discourage pathogen growth on the media. You must flush them before resuming use before re-install. If PF-2 filters have ever been activated/primed/wet, the clock starts ticking and you must keep the medias wet and replace them after 1 year or 1,000 gallons filtering, whichever comes first. Many Berkey users buy the costly system not only for daily water filtering, but to use for emergency survival backup system, so this is quite disappointing.The filter setup is cumbersome and must be followed very carefully. Because of so many recent negative reviews for Berkey as a whole, I actually ended up trying another water filter instead of buying replacement PF-2 filters. However, that ended up being a failed experiment, so I proceeded to order the replacement PF-2 filters. I purged the fluoride filters for total of 6 minutes each (2 minutes x3 changing the flow direction) instead of the recommended 20 seconds x2 past water running clear (using a strong thumb pressure on top of the faucet against the purging button for complete water seal with water spraying everywhere occasionally!), and made sure to turn the filters exactly 8 full revolutions. There was some resistance to tightening at 6 1/2 revolutions, so I was actually afraid of puncturing the internal filter media screen while following the install instruction for the full 8 turns because the Berkey rep pointed out that's causative to many reported problems. I may have been overzealous in my purging effort, but my PF-2 filtered water tested at 59 ppm for TDS and the water stayed absolutely clear. Without the PF-2 filters installed (double filtered with Filtrete Maximum), the Berkey water tests at 79 ppm.Berkey really should've improved the filter design to make it more fool-proof since its introduction a long years ago. Also, many reports of the main black filter manufacturing defects (forums & reviews) should prompt you to run a red dye (must be non-organic) test as soon as you receive your system so that you may return/exchange a defective element. If the black elements are not functioning properly, it'll drastically shorten the PF-2 filters service duration.When I initially contacted Berkey with my concerns over many of the critical reviews, including one in particular which stated that PF-2 removes flourosilicates only, the Berkey agent disagreed and shared a recent lab result done on 2/18/2018 by an NELAC ISO accredited lab.----Accumulated Volume, Influent Water FluorideConcentration in mg/L, Influent Water pH, TDS inmg/L, Effluent Fluoride Concentration in mg/L, Fluoride % Reduction.Start, 3.82, 6.46, 327, 0.10, 97.45 gallons, 3.82, 6.46, 327, 0.06, 98.425 gallons, 3.75, 6.48, 320, 0.07, 98.150 gallons, 3.79, 6.52, 318, 0.07, 98.275 gallons, 3.80, 6.51, 310, 0.07, 98.2100 gallons, 3.80, 6.52, 312, 0.11, 97.1----Your water PH level should be between 5-7 (closer to 5 the better, my PH is near 7), or the efficiency of the media will decline. Berkey also states that the PF-2 media will remove any types of inorganic fluoride salts soluble in water(sodium fluoride, sodicum fluorosilicate & calcium fluoride) along with fluorosilicic acid (aka hydro-fluosilicic acid). It also removes arsenic V and pre-oxidized arsenic III along with other residual heavy metal ions.There are many reviews concerning aluminum detection/suspension, but Berkey uses aluminum oxide (Al2O3) which is a safe non-toxic bio-compatible ceramic (corundum as in rubies and sapphires), different from the toxic aluminum metal. Lab testing can result in a false positive by counting the separated pure aluminum ion from the oxygen component. The use of activated alumina is one of three EPA and WQA recommended methods for removing fluoride, the other two being Bone char carbon (cheaper and not as effective) and reverse osmosis. Appropriated purged, installed, and maintained PF-2 filters most likely will not result in cloudy particulate in filtered water unless due to unexpected manufacturing defect. Be sure to order yours from a trusted reseller source to avoid counterfeit/used filters. The water temperature rises during the activation so you should definitely notice warm cloudy water during the initial filter purging procedure.I am taking a star off for the aforementioned issues and for the persistent deficit in manufacturing desig...

I ordered through Amazon Prime (I believe delivered by Amazon Warehouse). Arrived fast. 1 brown "rubber" rings was MIA.While not essential (I used the black filter screw/nut(?) instead. Easy to misstep and turn past the "8 rotations" (read manual for why it is a no-no) vs the one w/ the brown ring (feat of strength if you wanted more than 8 turns).I think I popped the screen w/ 8th rotation going into 9/10 as I tried to secure the filters.Sigh. Water ran super milky afterward, I disassembled and flushed again (no idea if that was because I popped the screen). Now things appear working okay.This is my 3rd purchase of this item after a long hiatus (I had a local spring water delivery service). Despite devotion in pregnancy/baby years to distilled water, my kid developed terrible dental fluorosis (so many sources for fluoride, including canned soups, tea, bread - as in the water from baking, etc.). The kid (now a teen) has never been studied for skeletal fluorosis but has an unusual amount of stiffness/joint pain. Anyhow, if I was suspicious about drinking fluoride in pregnancy, the discoloration of my kids teeth (and presumably, his future bone health) resulted in a quest to find ways to remove fluoride from routine consumption - which I soon learned was quite difficult! Always needing a special filter to remove fluoride and many times are unavailable w/ whatever filter system you want to use or cost a lot/add to install complications. Of all the filter systems, Berkey has been the most overall practical if you want the option to remove fluoride and I no longer consider any other choices.There is a trade off - the filters are in the bottom tank and that means you will have less water available for immediate use - this can be an issue the smaller size of your Berkey. Remember to keep track of use, you wont notice if this filter no longer works, as you could from taste on the black filters. These filters will need to be replaced more often.Bonus - how often do you find an affordable filtration that can remove fluoride and chloramines (two of the hardest things to remove from your tap water!!!!!! Thank you Berkey!(On the subject of fluoride - consumption is unnecessary to prevent cavities and why warning labels exist on toothpaste. Yes, there is a folly in distilled water as an exclusive source. As with any water that removes minerals, its important to find alternatives sources - especially in North America were our water's mineral content can be severely lacking in the water supply.This is a benefit of the Berkey is that minerals will remain, and removals are targeted, for example, this filter counters fluoride salt ions.)

Supremely reliable and long-lasting. I will change out my Berkey Blacks every 6,000 gallons (or 6 years), and I change out the PF-2's every year. Can't beat it. In Texas we fluoridate our municipal water. These post filters do an excellent job at removing fluoride and it's varying derivatives. Also, due to the agriculture surrounding every municipality, arsenic is a big concern. The PF-2's remove fluoride and any potential arsenic from the water without having to wait 24 hours for water to adequately flow. Previously, I owned Pro-Pur filters. The first Pro-Pur ceramic filters I owned were dual domed and contained a weird filter core. The water took HOURS to filter through. I eventually got the pair working, until 6 months later the core came of the filters and settled in the bottom drinking water tank. I then changed them out for a pair of the newer Pro-Pur G2.0. Worked great but the filtering time for every Pro-Pur filter is AWFUL! I made the change to Berkey and it's been AMAZING!

We've had our Berkey for over a year. The fluoride filters are the main reason we purchased a Berkey. They are only good for six months. I tested my water twice to verify this. Our water comes from a well and is naturally fluoridated at about .9 ppm (parts per million). I tested a filter by purchasing a kit through 3M (about $20) after seven months of use and the water tested at 0.79 ppm. I replaced the filter and tested after about a month and the water came back to 0.06 ppm. Hardly any fluoride! I am curious to test my water again at the five month mark but not sure I want to spend an additional $20. I think I will just stick to the manufacturer's recommendation of changing out ever six months. Overall, this is the way to go if you want to remove fluoride from your drinking water.After seeing multiple reviews state that their water tested so high for fluoride I would be curious to ask when they tested their water. They might have misunderstood the directions and be using their filters after six months. The black filters can be used indefinitely, but the fluoride filters lose effectiveness after six months of use. Another possibility is the ph of their tap water. I think the ph of your water can affect the effectiveness. I am not a scientist but have read that the filters work better with slightly acidic water (pH range of 5.5 - 6.5 and generally don't work well if the water is neutral (pH = 7) or more alkaline (higher pH). So if you want to be sure that your filter will work to filter out fluoride you could test the ph of your tap water first.