28
LU
LL
LL
CH
CW
SY
SA
LD
CF
HR
CM
OX
BS
GL
SN
SP
BA
TA
EX
PL
TQ
TR
DT
BH
SO
PO
PO
GU
BN
TN
RH
RG
SL
HP
AL
CT
ME
DA
KT
SG
MK
NN
PE
NR
IP
CB
CO
LE
WR
TF
WV
WS
ST
SK
DE
B
CV
DY
NG
LN
S
DN
YO
HG
NE
CA
LA
DL
DH
PR
L WN
BL
WA
M
OL
BB
BD
LS
WF
HX
HD
HU
TS
FY
SR
NP
SS
RM
Hard Water Regions in the UK
London area postcodes
BR
CR
E
EC
EN
HA
IG
N
NW
SE
SM
SW
TW
UB
W
WC
WD
Soft to
moderately soft
0 - 100mg/l as
calcium carbonate
equivalent
LU
LL
LL
CH
CW
SY
SA
LD
CF
HR
CM
OX
BS
GL
SN
SP
BA
TA
EX
PL
TQ
TR
DT
BH
SO
PO
PO
GU
BN
TN
RH
RG
SL
HP
AL
CT
ME
DA
KT
SG
MK
NN
PE
NR
IP
CB
CO
LE
WR
TF
WV
WS
ST
SK
DE
B
CV
DY
HG
LN
S
DN
YO
HG
NE
CA
LA
DL
DH
PR
L WN
BL
WA
M
OL
BB
BD
LS
WF
HX
HD
HU
TS
FY
SR
NP
SS
RM
Slightly hard to
moderately hard
100 - 200mg/l as
calcium carbonate
equivalent
LU
LL
LL
CH
CW
SY
SA
LD
CF
HR
CM
OX
BS
GL
SN
SP
BA
TA
EX
PL
TQ
TR
DT
BH
SO
PO
PO
GU
BN
TN
RH
RG
SL
HP
AL
CT
ME
DA
KT
SG
MK
NN
PE
NR
IP
CB
CO
LE
WR
TF
WV
WS
ST
SK
DE
B
CV
DY
HG
LN
S
DN
YO
HG
NE
CA
LA
DL
DH
PR
L WN
BL
WA
M
OL
BB
BD
LS
WF
HX
HD
HU
TS
FY
SR
NP
SS
RM
Hard to very hard
Above 200mg/l as
calcium carbonate
equivalent
LU
LL
LL
CH
CW
SY
SA
LD
CF
HR
CM
OX
BS
GL
SN
SP
BA
TA
EX
PL
TQ
TR
DT
BH
SO
PO
PO
GU
BN
TN
RH
RG
SL
HP
AL
CT
ME
DA
KT
SG
MK
NN
PE
NR
IP
CB
CO
LE
WR
TF
WV
WS
ST
SK
DE
B
CV
DY
HG
LN
S
DN
YO
HG
NE
CA
LA
DL
DH
PR
L WN
BL
WA
M
OL
BB
BD
LS
WF
HX
HD
HU
TS
FY
SR
NP
SS
RM
