Offer is redeemable against replacement filters (4 pack, 6 pack, 8 pack, 12 pack or 16 pack). Valid for a single use only.
Submit your water quality reading & receive a £5 voucher!
We want to build a picture of the quality of tap water throughout the UK.
Send us the reading from your water quality meter of unfiltered tap water in your area.
We'll provide a voucher code for £5 off your next pack of replacement filters as a thank you.
