WaterWater Hardness in Southall
Greater London, London • 11 postcode districts
Hard
The average water hardness in Southall is 287 ppm, classified as hard. Southall is served by Thames Water, covering 11 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 Southall
| Postcode | Water Company | Hardness | PPM | Level |
|---|---|---|---|---|
| UB11 | Thames Water | 314 ppm | Very Hard | |
| UB10 | Thames Water | 313 ppm | Very Hard | |
| UB9 | Thames Water | 285 ppm | Hard | |
| UB8 | Thames Water | 284 ppm | Hard | |
| UB7 | Thames Water | 283 ppm | Hard | |
| UB6 | Thames Water | 282 ppm | Hard | |
| UB5 | Thames Water | 281 ppm | Hard | |
| UB4 | Thames Water | 280 ppm | Hard | |
| UB3 | Thames Water | 279 ppm | Hard | |
| UB2 | Thames Water | 278 ppm | Hard | |
| UB1 | Thames Water | 277 ppm | Hard |
Water Companies Serving Southall
Get Water Hardness Updates
Be notified when your water company reports changes to hardness levels.