Passive Latrine use Monitor (PLUM)

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  • Environmental Engineer working on anaerobic systems and mobile sanitation; PhD in Env. Eng. on Resource Recovery from Waste
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Re: Passive Latrine use Monitor (PLUM)

Hi Trevor,

The PLUM was designed by a consortium of researchers but to the best of my knowledge is now being further developed, deployed, and managed by the SWEETlab at Portland state university. More information about them and their various sensor and M&E systems are here: www.pdx.edu/sweetlab/sweetsense

Best,

Sebastien
resourcesanitation.com
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  • tmsinnovation
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  • I manage the Decentralized Wastewater Management for Adaptation to Climate Change in Jordan (ACC Project) and previously coordinated the Climate-friendly sanitation services in peri-urban areas of Lusaka project in Zambia. My background is in Management, Economics and Information Systems.
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Passive Latrine use Monitor (PLUM)

Hi All

I came across this today during the Health and Hygiene 2013 conference in Chapel Hill.

I wanted to ask if anyone knows more about this "passive latrine use monitor (PLUM)" system, as the journal article has a "pay-wall" so I am not able to read the journal article?

Regards
Trevor

Accessed here: pubs.acs.org/doi/abs/10.1021/es2036702

Making sanitation count: developing and testing a device for assessing latrine use in low-income settings.
Clasen T, Fabini D, Boisson S, Taneja J, Song J, Aichinger E, Bui A, Dadashi S, Schmidt WP, Burt Z, Nelson KL.
Source: Department of Disease Control, London School of Hygiene and Tropical Medicine, London WC1E 7HT, United Kingdom.

Abstract

While efforts are underway to expand latrine coverage to an estimated 2.6 billion people who lack access to improved sanitation, there is evidence that actual use of latrines is suboptimal, limiting the potential health and environmental gains from containment of human excreta. We developed a passive latrine use monitor (PLUM) and compared its ability to measure latrine activity with structured observation. Each PLUM consisted of a passive infrared motion detector, microcontroller, data storage card, and batteries mounted in a small plastic housing that was positioned inside the latrine. During a field trial in Orissa, India, with ∼115 households, the number of latrine events measured by the PLUMs was in good agreement with that measured by trained observers during 5 h of structured observation per device per week. A significant finding was that the presence of a human observer was associated with a statistically significant increase in the number of latrine events, i.e., the users modified their behavior in response to the observer. Another advantage of the PLUM was the ability to measure activity continuously for an entire week. A shortcoming of the PLUM was the inability to separate latrine events that occurred in immediate succession, leading to possible undercounting during high-traffic periods. The PLUM is a promising technology that can provide detailed measures of latrine use to improve the understanding of sanitation behaviors and how to modify them and for assessing the intended health, livelihood, and environmental benefits of improved sanitation.

Trevor Surridge
Decentralized Wastewater Management for Adaptation to Climate Change in Jordan (ACC Project)
Project Manager

Deutsche Gesellschaft für
Internationale Zusammenarbeit (GIZ) GmbH
Ministry of Water and Irrigation, Shmeisani,
Amman
Jordan

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