16/01/2026
If you’re affected by water supply issues, the following information may be helpful.
If you are mixed feeding (giving formula and breastfeeding), consider increasing the feeds you offer at the breast.
If you are formula feeding, pre-made formula is the safest option.
If you are using bottled water to prepare formula, always check the label before use:
✨Sodium (Na) must be under 200mg per litre
✨Sulfate (SO₄) must be under 250mg per litre
Use only still water, not sparkling, to prepare the formula. Once the water bottle is opened, follow the use-by instructions on the label, and store it in the fridge.
Edit - Always follow the usual guidance of boiling the bottled water and allowing it to cool to no less than 70°C before making up bottles.
If you are using a bottle to feed your baby, you will need to use bottled water to sterilise all feeding equipment.
If you need infant feeding support you can contact your midwife (if baby under 28 days old), your health visitor (01753) 434008 or the National Breastfeeding Helpline UK is here for you 24/7. Call 0300 100 0212 or drop them a message on social media.
[ID 1: Preparing Infant Formula During Water Supply Issues. If there are problems with the water supply, such as it being shut off or unsafe to drink, it's important to know how to safely prepare formula for your baby.]
[ID 2: Tap water supply is off or unsafe to drink. If your household water is off, or you are advised that your tap water is not safe to use, you can use boiled bottled water to prepare formula, or use ready-made formula if you prefer. Images of mum holding child, and dirty water running from tap.]
[ID 3: Using bottled water to make up formula. When using bottled water, always check the label before use: Sodium (Na) must be under 200mg per litre. Sulfate (SO4 must be under 250mg per litre. Images of infant formula, and bottled water.]
[ID 4: image of a phone of a carpet. Screen says National Breastfeeding Helpline 0300 100 0212. Along the bottom - 24-hour support wherever you are in your infant feeding journey.]