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Reviews > Water Treatment > Filters > Sawyer S3 Select Water Purifier > Test Report by Kurt PapkeSawyer S3 Water Purifier
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Name: | Kurt Papke |
Age: | 68 |
Gender: | Male |
Height: | 6' 4" (193 cm) |
Weight: | 220 lb (100 kg) |
Email address: | kwpapke at gmail dot com |
City, State, Country: | Tucson, Arizona USA |
Manufacturer |
Sawyer Products, Inc. |
Model |
S3 Select Water Purifier |
Year of manufacture |
2021 |
MSRP |
US $79.99 |
Manufacturer website |
https://www.sawyer.com |
Weight |
0.625 lbs (280 g) Measured weight: 0.604 lbs (274 g) |
Contaminants Removed |
Heavy metals, viruses, bacteria, protozoa, chemicals,
pesticides |
Volume purified/fill |
20 oz (591 ml) |
Dimensions |
8.5 x 14 x 3 in Measured: 14.2 x 2.6 x 2.6 in (36 cm x 6.5 cm x 6.5 cm) I'm not sure how Sawyer came up with 8.5 inch height in their specifications, because it doesn't fit with any measured dimensions |
Longevity |
400 uses = 62.5 gallons (237 L) |
The design and construction seem to be high quality - inspecting the components I didn't see any weak points in the design, nor any manufacturing flaws. All the components fit together well, and the screw on/off fittings did not require any struggling to get them to connect or loosen.
The system has a fair amount of heft to it - this is not an
ultralight system. The bottle has a very soft rubber, or
"gummy" feel. The softness should make it easy to move
the dirty water around in the foam purifier, but I wonder if
it will be susceptible to punctures or tears from sharp
objects. The bottle is also tall and thin, making it
easy to get my hands around it to squeeze the dirty water
through the foam, but especially with the Micro Squeeze filter
attached to the top it could be tippy. That said, with
the cap on it is a closed system so it's not like water will
escape if it falls over.
Date |
Location |
Water Quality |
Water Quantity |
Weather |
October 15-17, 2021 |
Chiricahua Mountains, Arizona |
Clear |
3 qt (3 l) |
Sunny, lows around 40 F (4 C), highs
around 70 F (21 C) |
December 3-5, 2021 |
Aravaipa Canyon, Arizona |
Clear |
2 qt (2 l) |
Sunny, lows around 40 F (4 C), highs around 65 F (18 C) |
3 day car camping and day hiking trip. There was no potable water near our campsite, so I used a combination of water I brought with me and purified water from Turkey Creek. The following collage shows the Sawyer S3 in action:
It was tough for me to get all the water out of the foam. It might make sense to store water in the squeeze bottle to drink from directly or refill other bottles along the trail. This would get some utility from the weighty bottle with soaked foam.
As can be seen from the photo at left, there is no shortage of water in Aravaipa Canyon. Our campsite was right along the creek, so for anything that required hot water I simply scooped up fresh unfiltered water from the creek and boiled it. As a result I used only the 2 bottles that I carried in, and refilled them both once with the S3.
I did not backflush the filter before departing, and did not bring the syringe to do so with me. I chose poorly. From the outset it required enormous effort to get water through the filter. I didn't time it, but I'd estimate it took me at least a half-hour to fill two water bottles.
One thing I learned during this experience is that it does not pay to squeeze really, really hard. My hands got very tired, and it seemed like I was getting water leakage as I had a drip that was not coming from the filter output.
Note to self: before departing on all trips, backflush the filter at home. If more than a couple of bottles of water will be treated, bring the backflush system along.
It would be helpful if Sawyer supplied a carrying bag for all
the compnents that need to be carried out in the
backcountry. Bottle + filter + backflush gear = lots of
parts that are easy to misplace or leave behind at the use
site.
When I arrived home, I backwashed the filter and a lot of
black gunk came out. After several syringes of backwash,
I put the filter back on the (full) bottle and the flow was
back to normal.
Date |
Location |
Water Quality |
Water Quantity |
Weather |
January 19, 2022 |
Hieroglyphic Trail, Superstition
Mountains, Arizona |
Clear |
1 qt (1 l) |
Sunny, around 60 F (16 C) |
January 21, 2022 February 8, 2022 |
Romero pools, Santa Catalina Mountains,
Arizona |
Clear |
1 qt (1 l) each hike |
Sunny, around 70 F (21 C) |
Since I drank directly from the system during the last two hikes, the downside of not getting a full quart/liter of drinking water out of the system became more of an issue.
Bottom line on this device: due to the bulkiness, weight,
effort required for filtering, and inability to extract the
entire capacity of the bottle, I will only use this on future
hikes when I truly need the purifying capabilities, i.e. if I
expect that my water may be contaminated with heavy metals,
etc. I do occasionally hike in such areas, like the
Grand Canyon where the water sources can be contaminated from
mining. For this specific purpose, the S3 purifier will
stay in my kit for the foreseeable future. On hikes
where I do not expect such severe water challenges, this
device will remain at home.