Pages with the most categories

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1. SOLUX e.V. ‎(13 categories)
2. Sandec - Department Water and Sanitation in Developing Countries ‎(12 categories)
3. BushProof ‎(10 categories)
4. SODIS Foundation ‎(5 categories)
5. Human-powered emptying and transport ‎(5 categories)
6. Ingenieure ohne Grenzen e.V. ‎(5 categories)
7. Surface disposal ‎(5 categories)
8. Irrigation ‎(5 categories)
9. Soak pit ‎(5 categories)
10. Water disposal/Groundwater (GW) recharge ‎(5 categories)
11. Land application of sludge ‎(5 categories)
12. Dry toilet ‎(4 categories)
13. Pour flush toilet ‎(4 categories)
14. Unplanted drying beds ‎(3 categories)
15. Floating plant (Macrophyte) pond ‎(3 categories)
16. Co-composting ‎(3 categories)
17. Upflow anaerobic sludge blanket reactor (UASB) ‎(3 categories)
18. Sewer discharge station (SDS) ‎(3 categories)
19. Aquaculture ponds ‎(3 categories)
20. Composting chamber ‎(3 categories)
21. Fossa Alterna ‎(3 categories)
22. Solar water disinfection in Ecuador ‎(3 categories)
23. Activated sludge ‎(3 categories)
24. Free-water surface constructed wetland ‎(3 categories)
25. Bio-sand filter project in Kenya ‎(3 categories)
26. Solar water disinfection in Uzbekistan ‎(3 categories)
27. Aerated pond ‎(3 categories)
28. Horizontal subsurface flow constructed wetland ‎(3 categories)
29. Single Pit ‎(3 categories)
30. Double ventilated improved pit (VIP) ‎(3 categories)
31. Motorized emptying and transport ‎(3 categories)
32. Vertical flow constructed wetland ‎(3 categories)
33. Anaerobic biogas reactor ‎(3 categories)
34. Single Ventilated Improved Pit ‎(3 categories)
35. Planted drying beds ‎(3 categories)
36. Transfer station (Underground holding tank) ‎(3 categories)
37. Waste stabilization ponds (WSP) ‎(3 categories)
38. Application of compost/EcoHumus ‎(3 categories)
39. Trickling filter ‎(3 categories)
40. Sedimentation/Thickening ponds ‎(3 categories)
41. Kiva Microfunds ‎(3 categories)
42. Twin Pits for Pour Flush ‎(3 categories)
43. Fill and cover/Arborloo ‎(3 categories)
44. Cistern Flush Toilet ‎(2 categories)
45. Septic tank ‎(2 categories)
46. Leach field ‎(2 categories)
47. Waterless system with alternating pits ‎(2 categories)
48. Urinal ‎(2 categories)
49. Bio-sand filter ‎(2 categories)
50. Conventional gravity sewer ‎(2 categories)

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