For generations, Indian households have treasured the starchy water left after boiling rice. Sipped as “mand” to soothe digestion, fed to infants for a nutritional boost, or given to the elderly for easy nourishment, this humble byproduct was revered for its richness in B vitamins, iron, zinc, magnesium, and soluble fibre. Our grandmothers knew instinctively that boiling rice leaches significant nutrients into the cooking liquid, and to discard it was to throw away health itself. Yet the 21st century presents a complication they never faced. The very water that carries beneficial vitamins now also carries a concerning passenger: inorganic arsenic, a carcinogen that rice plants absorb efficiently from the soil and groundwater of many growing regions. India, unfortunately, is not exempt.

Studies from West Bengal, Chhattisgarh, and the Gangetic plains have repeatedly found rice grain arsenic levels surpassing international safety thresholds, with one study revealing that 90 out of 120 rice varieties tested in Chhattisgarh exceeded permissible limits. Groundwater irrigation in arsenic-rich aquifers is the primary culprit, and rice has become the dominant dietary source of arsenic exposure for millions of Indians. This places the traditional practice of drinking rice water squarely in the crosshairs of modern food safety. When you boil rice, a portion of that water-soluble arsenic leaches into the cooking liquid. To consume that liquid daily—especially for children, pregnant women, or those who eat rice at every meal—is to willingly ingest a cumulative toxin linked to heart disease, diabetes, and certain cancers. The act that once delivered life-giving nutrients now delivers a low-grade poison alongside them.

This does not mean we must abandon ancestral wisdom but rather adapt it to contemporary realities. Basmati from Punjab and rice from regions with naturally low arsenic levels remain safer choices. The “parboiling” method—boiling rice in excess water, discarding that water, and finishing with fresh water—removes up to 50% of the arsenic. But this creates a dilemma: discard the water to remove the toxin, and you discard the vitamins too. Keep the water to preserve nutrition, and you preserve the arsenic. There is no perfect culinary solution that grants both safety and nutrition from the same pot.

There is, however, a beautiful way out: redirect rice water from our stomachs to our skin, hair, homes, and gardens. The compounds that make rice water nutritious internally—amino acids, inositol, B-vitamins, and minerals—are equally beneficial externally, posing no health risk when applied topically. Inositol penetrates the hair shaft to repair damage from within, surviving multiple washes and protecting against future breakage. Amino acids fill damaged cuticles, leaving hair smoother and more elastic—a secret famously harnessed by the Yao women of rural China. For the skin, rice water acts as a gentle, soothing toner; its nutrients calm inflammation, reduce redness from eczema or sunburn, and form a protective barrier that locks in moisture without clogging pores. A simple rinse after washing your face, or adding a few cups to your bath, transforms an overlooked byproduct into a luxurious skincare ritual.

Beyond beauty, the household applications are equally compelling. For laundry, strained rice water serves as a natural starch, giving cotton and linen a crisp, pressed look. Even indoor plants benefit. Rice water feeds beneficial soil bacteria while delivering trace nitrogen, phosphorus, and potassium as a mild fertilizer. It is a zero-waste cycle that honours the traditional ethic of using every part of the grain while keeping toxins safely away from your digestive tract.

A few simple rules ensure these uses remain effective. Always strain the water thoroughly to remove solid particles. For skincare and plants, use fresh rice water kept in the refrigerator for up to 24 hours. For hair, a fermented version left at room temperature for twelve to twenty-four hours is more potent due to its lower pH and increased antioxidants; its sour odour can be masked with a few drops of essential oil. And never add salt—it damages both fabrics and soil.

We are not discarding our grandmothers’ wisdom; we are refining it. She was right that rice water is too valuable to pour down the drain, but she lived in a purer world. We honour her legacy not by blind repetition, but by thoughtful adaptation. Save the water for your hair, skin, clothes, and plants. Keep every bit of its nutritional bounty. But please, for your health’s sake, do not drink it. EK