1. Plinth level toilet with temporary superstructure
This is one of the simplest designs and it is best suited where space is a constraint. It is quite easy to empty filled pits, can be constructed within a day and cost investment is definitely on the lower side. The total cost of construction comes to about Rs. 1500. Superstructure can be made from locally available materials such as banana leaves, bamboo sticks and gunny bags. It can be a simple solution for sanitation around festival places and during emergencies. Estimated cost of 1 toilet: Rs. 1500.
2. Toilet only model with hollow bricks
The superstructure here is made of hollow bricks. This model is suitable for all purposes, it is comparatively low cost and is most suitable where space is limited. Estimated cost of 1 toilet: Rs. 5500.
3. Toilet attached bathroom (w/ hollow bricks and no roof)
A multi-functional low cost structure, this toilet and bathroom design accommodates provision for water storage, bathing and washing facilities inside the toilet. Additionally, using water waste for kitchen garden is possible and most importantly it provides privacy for ablution, especially keeping in mind women and adolescent girls. Estimated cost of 1 toilet: Rs. 7257.
4. Toilet only model (w/ concrete rings pit and roof)
It is a low cost design, especially suited for small areas, and provides privacy and safeguards during rainy season. Estimated cost of 1 toilet: Rs. 6875.
5. Twin pit – Pour flush latrine
Slightly larger space may be needed to construct this toilet but the cost is still low. Having two pits is certainly an advantage as when the first pit gets filled up, the flow of excreta has to be diverted to the second pit. In this design, two leach pits are connected to one single pour-flush toilet. Twin-pit toilets have a high convenience – when emptying one pit, people use second pit. Estimated cost of 1 toilet: Rs. 7257.
6. ECO-SAN toilets
This toilet design might be costly but prevents contamination of water sources and soil. Unlike other designs, emptying pits is not a requirement. This design is great in the areas where water logging and scarcity is a concern. It is most effective in coastal and rock areas, as it promotes soil fertility and crop production. In India, these designs are notably used in Tamil Nadu where the Tamil Nadu State Government provides subsidies. Estimated cost of 1 toilet: Rs. 10,747.
7. Bio-gas linked toilets
This design offers support to convert waste matter to Bio-gas, a non-conventional energy source. The fuel generated can be used as local source for electricity, heat and light. Also, the waste can be composted to Bio-manure which increases productivity and catalyses soil conservation. In 2012, UNICEF chose two districts in West Bengal to pilot this kind of design in India and approximately 19,000 Kg of methane gas that was produced from waste alone each day was converted to produce biogas. UNICEF successfully piloted this program with a local NGO – Ramakrishna Mission Lokashiksha Parishad to implement this program at Medinipur district. Look at the Banka bio-loo model. Estimated cost of 1 toilet: Rs. 21, 167
8. Child friendly toilets
These toilets encourage proper hygiene habits from childhood and provide privacy for children. One can make it to look interesting with beautiful caricatures of pets and animals on the wall. Children are not scared to use these kinds of toilets. All of them possess accessible and easy provisions for Anal cleaning and hand washing facilities. As these are constructed adjacent to the community toilets, and maintenance is certainly easier. Estimated cost of 1 toilet: Rs. 18,000 – Rs. 22,000.
9. School sanitary comple
School Sanxitation is a tool for promoting better sanitation and water management for children. It aids in improving the school environment and privacy for school children is certainly ensured. This complex promotes proper hygiene behaviours from childhood. Operation and maintenance is taken care by school children and separate facilities are provided for urination and defecation. Estimated cost of 1 toilet: Rs. 50,000.
10. Anganwadi Toilets
Created under the ‘Integrated Child Development Centres (ICDS) scheme’ the anganwadi toilets are believed to be a platform for behaviour change for the children by promoting hygiene behaviours from childhood. Child friendly door with a provision for opening from inside and outside of the toilet is available. Displays of pet animal pictures inside the wall create a friendly environment and hence children don’t fear using it. Smallest toilet pan with 14 inches can be used and to maintain one foot height of water stori ng tub. Water tub should be easy to access for children for cleaning and washing. Kerala, Himachal Pradesh and Tamil Nadu are among the states that have cleanest Anganwadi toilets.
Cost estimates from Gramalaya’s ‘Toilet Technology guide for low cost toilets’. Pics courtesy: Wikipedia, Gramalaya and India Water Portal. Thanks to Gramalaya, India Water Portal and WTO for information on toilet design.
Originally published at http://www.thealternative.in/