Product Info
What are you drinking?
Check the water quality in your area Go

Water Analysis: Filtered / Unfiltered, NYC

To evaluate the performance of Amiad Filtration on New York City municipal water, we collected samples of (1) unfiltered water and (2) after filtration through an Amiad twin parallel SAF4500 using our extrafine "EF" screen (rated 25 microns absolute).  Samples were sent to Spectrex Corporation (www.spectrex.com) in Redwood City, CA, for structural particle analysis.  Particle sizes are stratified by integer micron size.

The samples were collected from the domestic water supply, before and after Amiad, at an 835-unit residential building at 37th Street / 11th Avenue, New York City.

Spectrex Codes B268A (unfiltered), B268D (filtered)

Summary: 
Total Suspended Solids, unfiltered: 1.43 ppm
Total Suspended Solids, filtered: 0.19 ppm
Overall reduction of TSS 1 - 22 microns in size: 87%

Note that particle filtration is statistical, not absolute.  Reduction increases from about 30% of particles smaller than 5 microns up to near total reduction (with statistical deviation) above 12 microns. 

View the analytical reports from Spectrex:     UNFILTERED     FILTERED 
 
   Micron size         Total counts/cc,            Total counts/cc,
                                    UNFILTERED                          FILTERED                      Reduction %

1
11,400
7230
37%
2
5819
4131
29%
3
2123
1619
24%
4
1145
837
27%
5
620
335
46%
6
405
140
65%
7
358
112
69%
8
167
167
0%
9
215
56
74%
10
143
28
80%
11
48
0
100%
12
119
56
53%
13
48
0
100%
14
72
0
100%
15
0
28
0%
16
24
0
100%
17
250
0
100%
22
250
0
100%
23+
0
0
 

 

 

Information Center

Information about water quality and related topics.  Media articles and environmental perspectives. Water Quality Reports from around the US.

Featured Case Study

Yankee Stadium

All water is filtered at the new Yankee Stadium. Eight Amiad® SAF6000 filters in parallel for 2000+ gpm.

filteredISbetter™

Is your building filtered?


Order your products, 
learn about the program,
enroll your building.