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Overall, 80% of respondents reported using the PointONE™ filter within the previous day, and 64% of respondents reported treating water with the filter at least daily. When asked ‘what do you think of the filter?’ 91% of respondents reported that it was ‘very good.’ When asked if they perceived a change in the family's health, all but one respondent (98%) reported an improvement in health. Over half of respondents (54%) reported that filters had blocked or had reduced flow in the past, and 81% of those who estimated the frequency of flow blockage reported that it happened once a month or less. Most respondents (94%) reported that they used a container other than the clean storage container to collect source water before treating, and 71% of respondents demonstrated the full, correct backwashing procedure (using a clean syringe with filtered water to backwash the filter 3–4 times in the correct direction). Seven filters (14%) had observable cracks or damage to the filter casing, and one filter had a leak in the tubing on the inlet end (Table 2).

Table 2

Sawyer PointONE™ filter household user survey results (n = 50)

  n%
Last used filter (n = 49) Today or yesterday 39 80% 
Within the past week 18% 
>One month ago 2% 
How often filter water (n = 47) >Once a day 12 26% 
Once a day 18 38% 
2–3 times per week 15 32% 
Once a week or less 4% 
Respondent impression of filter (n = 44) Very good 40 91% 
Standard 7% 
Bad 2% 
Change in family health since started using filter (n = 48) Better 47 98% 
No Change 2% 
Filter has ever blocked up in the past (n = 48) Yes 22 46% 
No 26 54% 
How often has the filter flow been reduced or blocked (n = 42) Never 26 62% 
Once a day 2% 
Once a week 5% 
Once a month 14% 
Every six months or less 17% 
Container used to collect water (n = 50) Different container 47 94% 
Same container 6% 
Observation of backwash procedure (n = 49) Correct 35 71% 
Incorrect 14 29% 
Observed cracks in filter casing (n = 50) Yes 14% 
No 43 86% 
  n%
Last used filter (n = 49) Today or yesterday 39 80% 
Within the past week 18% 
>One month ago 2% 
How often filter water (n = 47) >Once a day 12 26% 
Once a day 18 38% 
2–3 times per week 15 32% 
Once a week or less 4% 
Respondent impression of filter (n = 44) Very good 40 91% 
Standard 7% 
Bad 2% 
Change in family health since started using filter (n = 48) Better 47 98% 
No Change 2% 
Filter has ever blocked up in the past (n = 48) Yes 22 46% 
No 26 54% 
How often has the filter flow been reduced or blocked (n = 42) Never 26 62% 
Once a day 2% 
Once a week 5% 
Once a month 14% 
Every six months or less 17% 
Container used to collect water (n = 50) Different container 47 94% 
Same container 6% 
Observation of backwash procedure (n = 49) Correct 35 71% 
Incorrect 14 29% 
Observed cracks in filter casing (n = 50) Yes 14% 
No 43 86% 

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