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Home>Water Filters by Contaminant>Cysts (Cryptosporidium and Giardia) Disinfection


Cysts (Cryptosporidium and Giardia) Disinfection


What are Cryptosporidium and Giardia Cysts?

Giardia and Cryptosporidium are widespread intestinal parasites that cause diarrheal illnesses in people. They are not bacteria or viruses, but protozoa with complex life cycles, which exist in a cyst form, very much like a microscopic egg. Giardia cysts are extremely small; they are 10 times smaller than the smallest object that can be seen with the naked eye, and Cryptospordium oocysts are even smaller. See more information on cysts below.

Cysts (Cryptosporidium and Giardia) Disinfection (Total Products: 9)

Culligan D-250A Undersink Replacement Filter Culligan D-250A Under Sink Water Filter Set
0.5 Micron, 9.75" x 2.4" x 2.4"
(Culligan Label)
Culligan D-250A Undersink Replacement Filter

Culligan D-30 Water Filter Replacement Culligan D-30A Under Sink Replacement Water Filter
0.5 Micron, 9.75" x 2.4" x 2.4"
Culligan D-30 Water Filter Replacement

Culligan D-40 Replacement Water Filter Culligan D-40A Under Sink Replacement Water Filter
0.5 Micron, 9.75" x 2.4" x 2.4"
Culligan D-40 Replacement Water Filter

Pentek MG-10MCB Microguard Water Filters Pentek MG-10MCB Microguard Membrane Water Filters
10.233" L x 2.875" W; Only Fits 3G Housings; Cyst & Bacteria Reduction; 0.15 Micron Absolute
Pentek MG-10MCB Microguard Water Filters

Pentek Fibredyne CFB-PB10 Water Filter Pentek Fibredyne CFB-PB10 Lead & Cyst Reduction Filters (12 Filters/Case)
9-3/4 L x 2-7/8 W; 0.5 Micron; Chlorine, Lead, Cyst Reduction; Sold in Case Quantities of 12
Sold in Case Quantities Only.
One Case Includes 12 CFB-PB10 Filters.
Pentek Fibredyne CFB-PB10 Water Filter

Crystal Quest Undersink Triple Fluoride PLUS Water Filter System Crystal Quest Undersink Replaceable Triple Fluoride Water Filter System
15" x 16"
Special Order. No Returns. Approx 7-10 day lead time for making/testing product.
Crystal Quest Undersink Triple Fluoride PLUS Water Filter System

PuroTwist 4000 Reverse Osmosis System PuroTwist 4000 Reverse Osmosis Water Filtration System
4-Stage RO; 50 Gallons Per Day; Air Gap
PuroTwist 4000 Reverse Osmosis System

Pentek RO-3500 Reverse Osmosis System Pentek RO-3500 Reverse Osmosis System
3-Stage RO System; Filters and Faucet Included
Pentek RO-3500 Reverse Osmosis System

Pentek UVBB-120-1 UltraViolet System Pentek UVBB-120-1 120V UltraViolet Water Filtration System
29" L X 7" W; 120 v AC/ 60 Hz; 15 GPM Flow Rate; 1.5" Inlet/Outlet
Includes wrench, UV Lamp, mounting bracket
Pentek UVBB-120-1 UltraViolet System


What health problems are caused by Cysts (Cryptosporidium and Giardia)?

When even a few cysts are consumed, they enter the small intestine, where they excyst, or "hatch," and can multiply into millions of protozoa. Giardiasis and cryptosporidiosis are flu-like illnesses with symptoms involving persistent diarrhea, nausea, abdominal cramps, weight loss and sometimes dehydration.

How do we get Cysts (Cryptosporidium and Giardia)?

Cysts and oocysts are commonly transmitted from the environment to humans through inadequately or improperly treated drinking water. Most surface water sources either contain or are vulnerable to Giardia cyst and Cryptosporidium oocyst contamination at one time or another. Since some people are carriers, cysts and oocysts may enter the water through treated and untreated sewage discharges. Of particular concern are those animals that live in or near the water, since they are likely to deposit cysts and oocysts directly into drinking water supplies. Livestock are notorious carriers of Cryptosporidium, while beavers have been identified as a carrier of Giardia. Once in the water, both protozoan cysts remain capable of infecting a host for many months, especially in colder water where they are more resistant to natural die-off. Since many animals are carriers of cysts and oocysts, you should never drink untreated water from even the clearest looking stream or river. Giardia has became famous as the "backpacker's disease" because so many unsuspecting hikers and backpackers often became ill after drinking water directly from clear, mountain streams. You should also avoid untreated spring water--no matter how clean it looks--because cysts, oocysts, bacteria and viruses may contaminate the spring supply at any time.

The recommended method of treatment is a Reverse Osmosis System or other point-of-use water filter capable of removing particles less than one micron in diameter.