Hard water may be one of the reason,
But if its severe hairfall I recommend you to go for Blood Test that specially include CBC,Vit D,Iron,Thyroid.
By this you will figureout the nutritional deficiencies & consult a doctor with your reports to get adequate supplementation.
Because body has to be treated internally rather than externally
Most important have a healthy diet & sleep
Hope you recover soon 😇
Please don't fall into traps of Hair Gummies, Adivasi etc Hairoils, Minoxidil & finastride
Hope this reaches everyone who is facing severe hairfall.
Everything is temporary nothing is permanent, Good times Ahead 👍