The river is sacred to Sikhism because Guru Nanak attained enlightenment here.
The riverbed was teeming with hyacinth and silt and was on the verge of dying when Singh took the initiative to clean it up.
To treat the water, Singh used a low-cost underground sewage model called the Seechewal Model that treats the stored sewage water in a natural way by using it for agriculture and irrigation purposes.
The Centre has already approached Singh to implement this model in the cleaning of River Ganga as well.
Besides saving the river, Singh has also played an important role in establishing schools, technical centres, degree colleges that have been instrumental in eradicating poverty, superstition and atrocities against women.