Approximately 60% of the total passenger carrying coaches over Indian Railways have been installed with bio-toilets. The earlier plan to fit bio-toilets in the entire fleet of coaches by the year 2021-22 has been advanced to 2019 in the Budget 2017-18.
A list of some of the trains having coaches equipped with bio-toilets is given below:-
| Zonal Railways | Trains |
| Central | 22135/36 Nagpur-Rewa Superfast Express,
22119/20 Mumbai CSTM-Karmali Tejas Express, 12131/32 Dadar-Sai Nagar Shirdi Express. |
| East Coast | 18401/02 Puri-Okha Express,
18496/95 Bhubaneswar-Rameswaram Express, 12898/97 Bhubaneswar-Pondicherry Express. |
| East Central | 55575/76 Darbhanga-Biraul Passenger,
13241/42 Banka-Rajendra Nagar Intercity Express, 12355/56 Rajendra Nagar-Jammu Tawi Archana Express. |
| Eastern | 12343/44 Darjeeling Mail,
12377/78 Padatik Express, 12345/46 Saraighat Express. |
| North Central | 22431/32 Allahabad-Udhampur Express,
12417/18 Prayagraj Express, 11107/08 Bundelkhand Express. |
| North Eastern | 15045/46 Gorakhpur-Okha Express,
15119/20 Manduadih-Rameswaram Express, 12595/96 Gorakhpur-Anand Vihar Terminal Hamsafar Express. |
| Northeast Frontier | 15635/36 Okha-Guwahati Express,
15647/48 Lokmanya Tilak (T)-Guwahati Express, 15717/18 Guwahati-Mariani Intercity Express. |
| Northern | 14611/12 Shri Mata Vaishno Devi Katra-Ghazipur City Express,
14609/10 Hemkunt Express , 12471/72 Swaraj Express. |
| North Western | 22497/98 Shri Ganganagar-Tiruchchirappalli Humsafar Express,
14889/90 Bhagat Ki Kothi-Munabao Thar Express, 14811/12 Delhi Sarai Rohilla-Sikar Express. |
| Zonal Railways | Trains |
| South Central | 12757/58 Secunderabad-Sirpur Kaghaznagar Express,
17019/20 Hyderabad-Jaipur Express, 12721/22 Hyderabad-Nizamuddin Dakshin Express. |
| South East Central | 18241/42 Durg-Ambikapur Express,
18247/48 Bilaspur-Rewa Express, 58219/20 Bilaspur-Chirmiri Express. |
| South Eastern | 18007/08 Shalimar-Vanjapur Intercity Express,
22877/78 Howrah-Ernakulam Antyodaya Express, 22887/88 Howrah-Yesvantpur Humsafar Express. |
| Southern | 12635/36 Chennai Egmore-Madurai Vaigai Express,
12605/06 Chennai Egmore-Karaikudi Pallavan Express, 22661/62 Chennai Egmore-Rameswaram Sethu Express. |
| South Western | 16589/90 Rani Channamma Express,
12627/28 Karnataka Express, 16501/02 Ahmedabad-Yesvantpur Express. |
| West Central | 12121/22 Madhya Pradesh Sampark Kranti Express,
11449/50 Jabalpur-Shri Mata Vaishno Devi Katra Express, 12193/94 Jabalpur-Yesvantpur Express. |
| Western | 22969/70 Okha-Varanasi Express,
19573/74 Okha-Jaipur Express, 19565/66 Okha-Dehradun Uttaranchal Express. |
This information was given by the Minister of State of Railways Shri Rajen Gohain in a written reply to a question in Rajya Sabha
