Besides the spontaneous replication mentioned in the proceeding page, some other interesting models have emerged. For example, two of the local organizations involved in the original project have linked with external agencies.
Representatives of the governmental program (PROGRESA), which provides cash subsidies for families with school age children, approached the local organization CESDER in the Sierra Norte de Puebla. PROGRESA requires that participating families build sanitation facilities - usually pit latrines. However, the government officials were impressed by the success of the eco-san model and accepted a proposal for a collaborative effort entailing:
- CESDER providing education and follow-up to families.
- The local toilet seat workshop making and selling the seats.
- Families building the toilet chambers and superstructure, absorbing all costs.
- DIF subsidizing the toilet seats and providing cash subsidies after the chambers and superstructure are built.
- Espacio de Salud providing supervision as needed.
This program began in Sept, 2001 and plans to include four villages, directly impacting 3000 families within three years.
UNICEF contacted the Chiapas local organization CASFA in the fall of 2001 in order to carry out a dry sanitation program through 20 primary schools. UNICEF pays for the construction of the toilet and finances workshops carried out by CASFA. The children's parents attend the workshops which cover caring for the schools' vegetable gardens, construction and maintenance of eco-san toilets, organic agriculture, and use of natural fertilizers (including composting and urine). CASFA also provides technical assistance in design, construction, maintenance and follow-up of the school toilets. CASFA, however, feels that this short-term project (only six months) is insufficient to be sustainable, and is looking for ways to lengthen the project and expand its activities.