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Classification of katrines - strictly from the park textbook spm

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The user is asking about "katrines" from "Park's textbook SPM" - this refers to catrines or more likely katrine - actually, in Park's Textbook of Preventive and Social Medicine (PSM/SPM), this likely refers to "catrines" or possibly "latrines" - let me search for it.
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The user means latrines from Park's Textbook. Now let me read the relevant block to get the full classification.
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Now let me read the full block starting from where the latrine classification section begins (around line 400 to get the classification overview first):
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I can see the classification. Let me also read a bit earlier to get the full classification header:
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I now have the complete classification. Here is the full Classification of Latrines strictly from Park's Textbook of Preventive and Social Medicine:

Classification of Latrines

(Park's Textbook of Preventive and Social Medicine, p. 859)

I. Unsewered Areas

1. Service Type Latrines (Conservancy System)
  • Nightsoil is collected from pail or bucket type latrines by human agency, and later disposed of by burying or composting.
2. Non-service Type (Sanitary Latrines)
  • (a) Bore hole latrine
  • (b) Dug well or pit latrine
  • (c) Water-seal type of latrines:
    • (i) P.R.A.I. type
    • (ii) R.C.A. type
    • (iii) Sulabh Shauchalaya
  • (d) Septic tank
  • (e) Aqua privy
3. Latrines Suitable for Camps and Temporary Use
  • (a) Shallow trench latrine
  • (b) Deep trench latrine
  • (c) Pit latrine
  • (d) Bore hole latrine

II. Sewered Areas

1. Water-carriage system and sewage treatment
  • (a) Primary treatment
    • Screening
    • Removal of grit
    • Plain sedimentation
  • (b) Secondary treatment
    • Trickling filters
    • Activated sludge process
  • (c) Other methods
    • (i) Sea outfall
    • (ii) River outfall
    • (iii) Sewage farming
    • (iv) Oxidation ponds
Key note on sanitary latrines: A sanitary latrine must meet four criteria - excreta must not contaminate ground or surface water, not pollute the soil, not be accessible to flies/rodents/animals, and not create nuisance due to odour or appearance.
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