Katie, thanks for your questions, you have some good ones!
1. We did latrines in one (La Perla) of the three villages (if I said we did them in 3, that was a mistake, sorry). The people that still need latrines are mostly new homes since we did our project and also some in other areas that were missed by other organizations that built t...
Katie, thanks for your questions, you have some good ones!
1. We did latrines in one (La Perla) of the three villages (if I said we did them in 3, that was a mistake, sorry). The people that still need latrines are mostly new homes since we did our project and also some in other areas that were missed by other organizations that built them there. There are a few that had latrines in decent shape so opted not to join in on the program, but since that time (4 years) their latrines have filled up. If people have existing infrastructure in good shape, then we will be looking to convert these to double pits and reuse any materials we can.
These are all single pit VIP latrines though, unfortunately, so they will fill up at some point - ours are not in that boat yet, but they will eventually. In general, we have a lot of old single pits out there that need to be converted to doubles somehow. We are trying to come up with some strategies (especially strategies that decrease dependency on EP or other NGOs, Nicaragua has a long history of NGOs (us included) creating dependencies) and we will be experimenting with some in another area in 2014 to see if we can find something that works (looking at some incentives to encourage people to get started on the conversion and then giving an incentive once they do, details still being worked out) - if so, we will roll it out in the other areas like here as well. So, although the latrines we did in the one community are in decent shape, they are not really sustainable (built before we switched over to the new design).
Although we have seen some families in some areas build their own latrines without EP or other NGO intervention, they have been few. And, in this area, we haven't seen any one do that, unfortunately...
As for M&E on latrines, we don't have anything really good specific to double pits yet (just creating some new metrics now), but as for latrines in general, we are collecting data on overall coverage in the areas we are working and doing random sample household surveys to check in on the condition of the latrines. In a survey last year, about 75% of the latrines were still functioning (single pits filling up is the most common problem). We just did a survey in this area this year, but I don't have all the data yet. We did also test the waste when the first families started to change back to the first pit. We did find some coliforms, prompting us to modify the design slightly to be a little deeper and to have our staff be more insistent on the drying material that the families are to be using.
2. The shells are the superstructure, we call it the "caseta" here in Nicaragua. When I said "both pits can be reused as one fills", I see that can be confusing, I meant that both pits are candidates to be reused, although not to be used at the same time. One fills, then the second is used, then the first one is emptied and used, etc.
We don't use a door to seal, the latrine slab is what is sealed. I haven't heard of problems with people not sealing the slab after moving it, but then again, we've only been doing double pits for 5 years and there have only been a few families that have gone back to the first pit so far. For the most part, people seem to be doing it, but we have fairly good follow-up in our areas from our educational team and helps encourage that. The threat of the smell and contamination seems to help encourage compliance as well.
3. We do have data from the regional health clinics and the trend was downward on diarrheal disease in all of our areas until about 2-3 years ago when they changed the methodology for data collection, so the data is no longer comparable. We didn't collect data from areas where we didn't work until recently (i.e. a control as you suggest), but since the data is no longer comparable, we haven't been able to show anything. I think we are moving away from health data since it has been unreliable (they might be changing the data collection methodology again on us) and looking directly at water quality test results as a proxy indicator.
4. I apologize for the lack of data on the water system design. The current water sources are multiple; there are several wells, and a couple of existing water systems that dry up during the summer. Especially one of the water systems was built by an NGO that has no experience with water and it just doesn't work. The design of the new system plans on using a drilled well/borehole with an electric pump. We did a well pumping test on it ourselves (well, another NGO did it for us) and it had excellent production (54gpm). The water quality test was done by the municipal gov't and also came out well. Each household is planned to receive a spigot and a water meter. There are a few households that technically cannot be reached with the system and the municipality has planned a few well projects for them (not included in this proposal here).
The school uses the well that is planned to be pumped from at the current time, the well is about 20 meters from the school, just outside the fence. The school has existing latrines from when the school was built. These are quite old and need to be replaced.
I hope that answers all your questions, let me know if you have any doubts... Saludos, Rob