WaterIs Croydon Water Hard or Soft?
Hard at 297 ppm • Greater London, London
The average water hardness in Croydon is 297 ppm, classified as hard. Croydon is served by South East Water, covering 9 postcode districts across Greater London in the London region.
Hardness varies across the area — see the table below for a breakdown by postcode district.
Water Hardness by Postcode in Croydon
| Postcode | Water Company | Hardness | PPM | Level |
|---|---|---|---|---|
| CR9 | South East Water | 301 ppm | Very Hard | |
| CR8 | South East Water | 300 ppm | Hard | |
| CR7 | South East Water | 299 ppm | Hard | |
| CR6 | South East Water | 298 ppm | Hard | |
| CR5 | South East Water | 297 ppm | Hard | |
| CR4 | South East Water | 296 ppm | Hard | |
| CR3 | South East Water | 295 ppm | Hard | |
| CR2 | South East Water | 294 ppm | Hard | |
| CR0 | South East Water | 292 ppm | Hard |
Water Companies Serving Croydon
Water Hardness Guides
Recommended Products for Croydon
Popular choices for households dealing with hard water in this area.
Water2Buy W2B200 Water Softener
From ~£400Best-value whole-house ion-exchange softener for UK homes. Eliminates limescale from pipes, boilers, and appliances. Digital metered regeneration — low salt use. 7-year warranty.
View on AmazonPhilips AWP1775 Shower Filter
From ~£30Quick win for skin and hair in hard water areas. Reduces chlorine and limescale — fits standard shower hoses in minutes, no tools needed. Cartridge lasts ~6 months.
View on AmazonBRITA Marella Water Filter Jug
From ~£20UK's best-selling filter jug. Reduces limescale, chlorine, and metals for better-tasting tap water. Quick first step alongside a softener.
View on AmazonGet Water Hardness Updates
Be notified when your water company reports changes to hardness levels.