UK water quality by postcode

Every postcode district we hold test results for, grouped by postcode area. Each report covers hardness, PFAS, lead, nitrate and more.

Try your postcode — e.g. SW1A, M1, B1

1,748 districts across 93 postcode areas.

AL — Welwyn Hatfield (10)

AL1 AL2 AL3 AL4 AL5 AL6 AL7 AL8 AL9 AL10

B — Birmingham (77)

B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 B12 B13 B14 B15 B16 B17 B18 B19 B20 B21 B23 B24 B25 B26 B27 B28 B29 B30 B31 B32 B33 B34 B35 B36 B37 B38 B40 B42 B43 B44 B45 B46 B47 B48 B49 B50 B60 B61 B62 B63 B64 B65 B66 B67 B68 B69 B70 B71 B72 B73 B74 B75 B76 B77 B78 B79 B80 B90 B91 B92 B93 B94 B95 B96 B97 B98

BA — Bath and North East Somerset (5)

BA1 BA11 BA12 BA14 BA15

BB — North Yorkshire (1)

BD — Bradford (24)

BD1 BD2 BD3 BD4 BD5 BD6 BD7 BD8 BD9 BD10 BD11 BD12 BD13 BD14 BD15 BD16 BD17 BD18 BD19 BD20 BD21 BD22 BD23 BD24

BH — New Forest (1)

BN — Arun (25)

BN1 BN2 BN3 BN5 BN6 BN7 BN8 BN9 BN10 BN11 BN12 BN13 BN14 BN15 BN16 BN17 BN18 BN20 BN21 BN22 BN41 BN42 BN43 BN44 BN45

BR — Bromley (8)

BR1 BR2 BR3 BR4 BR5 BR6 BR7 BR8

BS — Bath and North East Somerset (7)

BS14 BS25 BS27 BS31 BS32 BS37 BS40

CA — Northumberland (2)

CB — Cambridge (13)

CB1 CB2 CB3 CB5 CB6 CB7 CB8 CB9 CB10 CB21 CB23 CB24 CB25

CF — Caerphilly (36)

CF3 CF5 CF10 CF11 CF14 CF15 CF23 CF24 CF30 CF31 CF32 CF33 CF34 CF35 CF36 CF37 CF38 CF39 CF40 CF41 CF42 CF43 CF44 CF45 CF46 CF47 CF48 CF61 CF62 CF63 CF64 CF71 CF72 CF81 CF82 CF83

CH — Flintshire (5)

CH4 CH5 CH6 CH7 CH8

CM — Braintree (16)

CM3 CM5 CM6 CM7 CM8 CM9 CM14 CM15 CM16 CM17 CM18 CM19 CM20 CM21 CM22 CM23

CO — Babergh (11)

CO1 CO2 CO3 CO4 CO5 CO6 CO7 CO8 CO9 CO10 CO11

CR — Croydon (9)

CR0 CR2 CR3 CR4 CR5 CR6 CR7 CR8 CR9

CT — Dover (18)

CT2 CT3 CT4 CT7 CT8 CT9 CT10 CT11 CT12 CT13 CT14 CT15 CT16 CT17 CT18 CT19 CT20 CT21

CV — Coventry (24)

CV1 CV2 CV3 CV4 CV5 CV6 CV7 CV8 CV9 CV10 CV11 CV12 CV13 CV21 CV22 CV23 CV31 CV32 CV33 CV34 CV35 CV36 CV37 CV47

DA — Bexley (14)

DA1 DA2 DA5 DA6 DA7 DA8 DA9 DA10 DA12 DA14 DA15 DA16 DA17 DA18

DE — Amber Valley (22)

DE1 DE3 DE4 DE5 DE6 DE7 DE11 DE12 DE13 DE15 DE21 DE22 DE23 DE24 DE45 DE55 DE56 DE65 DE72 DE73 DE74 DE75

DH — County Durham (9)

DH1 DH2 DH3 DH4 DH5 DH6 DH7 DH8 DH9

DL — County Durham (17)

DL1 DL2 DL3 DL4 DL5 DL6 DL7 DL8 DL9 DL10 DL11 DL12 DL13 DL14 DL15 DL16 DL17

DN — Doncaster (30)

DN1 DN2 DN3 DN4 DN5 DN6 DN7 DN8 DN9 DN10 DN11 DN12 DN14 DN15 DN16 DN17 DN18 DN19 DN20 DN31 DN32 DN33 DN34 DN35 DN36 DN37 DN38 DN39 DN40 DN41

DY — Dudley (13)

DY1 DY2 DY3 DY5 DY6 DY7 DY8 DY9 DY10 DY11 DY12 DY13 DY14

E — Hackney (18)

E1 E2 E3 E5 E6 E7 E8 E9 E10 E11 E12 E13 E14 E15 E16 E17 E18 E20

EN — Broxbourne (11)

EN1 EN2 EN3 EN4 EN5 EN6 EN7 EN8 EN9 EN10 EN11

EX — East Devon (32)

EX1 EX2 EX3 EX4 EX5 EX6 EX7 EX8 EX9 EX10 EX11 EX12 EX14 EX15 EX16 EX17 EX18 EX19 EX20 EX21 EX22 EX23 EX24 EX31 EX32 EX33 EX34 EX35 EX36 EX37 EX38 EX39

GL — Forest of Dean (25)

GL1 GL2 GL3 GL4 GL5 GL6 GL8 GL9 GL10 GL11 GL12 GL14 GL15 GL16 GL17 GL18 GL19 GL20 GL50 GL51 GL52 GL53 GL54 GL55 GL56

GU — Guildford (28)

GU1 GU2 GU3 GU4 GU5 GU6 GU7 GU8 GU9 GU12 GU15 GU16 GU18 GU19 GU20 GU21 GU22 GU23 GU24 GU25 GU27 GU28 GU29 GU31 GU32 GU33 GU35 GU47

HA — Brent (10)

HA0 HA1 HA2 HA3 HA4 HA5 HA6 HA7 HA8 HA9

HD — Calderdale (9)

HD1 HD2 HD3 HD4 HD5 HD6 HD7 HD8 HD9

HG — North Yorkshire (5)

HG1 HG2 HG3 HG4 HG5

HP — Buckinghamshire (21)

HP1 HP2 HP3 HP4 HP5 HP8 HP9 HP11 HP12 HP13 HP14 HP15 HP16 HP17 HP18 HP19 HP20 HP21 HP22 HP23 HP27

HR — Herefordshire, County of (9)

HR1 HR2 HR3 HR4 HR5 HR6 HR7 HR8 HR9

HU — East Riding of Yorkshire (20)

HU1 HU2 HU3 HU4 HU5 HU6 HU7 HU8 HU9 HU10 HU11 HU12 HU13 HU14 HU15 HU16 HU17 HU18 HU19 HU20

HX — Calderdale (7)

HX1 HX2 HX3 HX4 HX5 HX6 HX7

IG — Redbridge (8)

IG1 IG2 IG3 IG4 IG5 IG6 IG7 IG11

IP — East Suffolk (29)

IP1 IP2 IP3 IP4 IP5 IP6 IP7 IP8 IP9 IP10 IP11 IP12 IP13 IP14 IP17 IP20 IP21 IP22 IP23 IP24 IP25 IP26 IP27 IP28 IP29 IP30 IP31 IP32 IP33

KT — Elmbridge (24)

KT1 KT2 KT3 KT4 KT5 KT6 KT7 KT8 KT9 KT10 KT11 KT12 KT13 KT14 KT15 KT16 KT17 KT18 KT19 KT20 KT21 KT22 KT23 KT24

L — Knowsley (1)

LA — North Yorkshire (3)

LD — Powys (8)

LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8

LE — Blaby (22)

LE1 LE2 LE3 LE4 LE5 LE6 LE7 LE8 LE9 LE10 LE11 LE12 LE13 LE14 LE15 LE16 LE17 LE18 LE19 LE21 LE65 LE67

LL — Gwynedd (67)

LN — East Lindsey (13)

LN1 LN2 LN3 LN4 LN5 LN6 LN7 LN8 LN9 LN10 LN11 LN12 LN13

LS — Leeds (29)

LS1 LS2 LS3 LS4 LS5 LS6 LS7 LS8 LS9 LS10 LS11 LS12 LS13 LS14 LS15 LS16 LS17 LS18 LS19 LS20 LS21 LS22 LS23 LS24 LS25 LS26 LS27 LS28 LS29

LU — Central Bedfordshire (7)

LU1 LU2 LU3 LU4 LU5 LU6 LU7

ME — Maidstone (15)

ME1 ME2 ME3 ME4 ME5 ME6 ME7 ME8 ME9 ME10 ME11 ME12 ME13 ME14 ME20

MK — Milton Keynes (22)

MK1 MK4 MK5 MK6 MK7 MK8 MK9 MK10 MK11 MK12 MK13 MK14 MK15 MK16 MK18 MK40 MK41 MK42 MK43 MK44 MK45 MK46

N — Barnet (22)

N1 N2 N3 N4 N5 N6 N7 N8 N9 N10 N11 N12 N13 N14 N15 N16 N17 N18 N19 N20 N21 N22

NE — Northumberland (59)

NE1 NE2 NE3 NE4 NE5 NE6 NE7 NE8 NE9 NE10 NE11 NE12 NE13 NE15 NE16 NE17 NE18 NE19 NE20 NE21 NE22 NE23 NE24 NE25 NE26 NE27 NE28 NE29 NE30 NE31 NE32 NE33 NE34 NE35 NE36 NE37 NE38 NE39 NE40 NE41 NE42 NE43 NE44 NE45 NE46 NE47 NE48 NE49 NE61 NE62 NE63 NE64 NE65 NE66 NE67 NE68 NE69 NE70 NE71

NG — Gedling (29)

NG1 NG2 NG3 NG4 NG5 NG6 NG7 NG8 NG9 NG10 NG11 NG12 NG13 NG14 NG15 NG16 NG17 NG18 NG19 NG20 NG21 NG22 NG23 NG24 NG25 NG31 NG32 NG33 NG34

NN — North Northamptonshire (16)

NN1 NN2 NN3 NN4 NN5 NN6 NN7 NN8 NN9 NN10 NN14 NN15 NN16 NN17 NN18 NN29

NP — Monmouthshire (18)

NP4 NP7 NP8 NP10 NP11 NP12 NP13 NP15 NP16 NP18 NP19 NP20 NP22 NP23 NP24 NP25 NP26 NP44

NR — Broadland (33)

NR1 NR2 NR3 NR4 NR5 NR6 NR7 NR8 NR9 NR10 NR11 NR12 NR13 NR14 NR15 NR16 NR17 NR18 NR19 NR20 NR21 NR22 NR23 NR24 NR25 NR26 NR27 NR28 NR29 NR30 NR32 NR34 NR35

NW — Barnet (11)

NW1 NW2 NW3 NW4 NW5 NW6 NW7 NW8 NW9 NW10 NW11

OX — Cherwell (24)

OX1 OX2 OX3 OX4 OX5 OX7 OX9 OX10 OX11 OX12 OX13 OX14 OX15 OX16 OX17 OX25 OX26 OX27 OX28 OX29 OX33 OX39 OX44 OX49

PE — Fenland (36)

PE1 PE2 PE3 PE4 PE5 PE6 PE7 PE8 PE9 PE10 PE11 PE12 PE13 PE14 PE15 PE16 PE19 PE20 PE21 PE22 PE23 PE24 PE25 PE26 PE27 PE28 PE29 PE30 PE31 PE32 PE33 PE34 PE35 PE36 PE37 PE38

PL — Cornwall (35)

PL1 PL2 PL3 PL4 PL5 PL6 PL7 PL8 PL9 PL10 PL11 PL12 PL13 PL14 PL15 PL16 PL17 PL18 PL19 PL20 PL21 PL22 PL23 PL24 PL25 PL26 PL27 PL28 PL29 PL30 PL31 PL32 PL33 PL34 PL35

PO — Isle of Wight (34)

PO1 PO2 PO3 PO4 PO5 PO6 PO7 PO8 PO9 PO10 PO11 PO12 PO13 PO14 PO15 PO16 PO17 PO18 PO19 PO20 PO21 PO22 PO30 PO31 PO32 PO33 PO34 PO35 PO36 PO37 PO38 PO39 PO40 PO41

RG — Reading (25)

RG1 RG2 RG4 RG5 RG6 RG8 RG9 RG10 RG12 RG14 RG17 RG18 RG19 RG20 RG21 RG24 RG25 RG26 RG28 RG30 RG31 RG40 RG41 RG42 RG45

RH — Mole Valley (14)

RH1 RH2 RH3 RH4 RH5 RH7 RH8 RH9 RH12 RH13 RH14 RH15 RH17 RH20

RM — Havering (15)

RM1 RM2 RM3 RM4 RM5 RM6 RM7 RM8 RM9 RM10 RM11 RM12 RM13 RM14 RM15

S — Sheffield (43)

S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S17 S18 S20 S21 S25 S26 S32 S33 S35 S36 S42 S43 S44 S45 S60 S61 S62 S63 S64 S65 S66 S70 S71 S72 S73 S74 S75 S80 S81

SA — Carmarthenshire (51)

SA1 SA2 SA3 SA4 SA5 SA6 SA7 SA8 SA9 SA10 SA11 SA12 SA13 SA14 SA15 SA16 SA17 SA18 SA19 SA20 SA31 SA32 SA33 SA34 SA35 SA36 SA37 SA38 SA39 SA40 SA41 SA42 SA43 SA44 SA45 SA46 SA47 SA48 SA61 SA62 SA63 SA64 SA65 SA66 SA67 SA68 SA69 SA70 SA71 SA72 SA73

SE — Lambeth (28)

SE1 SE2 SE3 SE4 SE5 SE6 SE7 SE8 SE9 SE10 SE11 SE12 SE13 SE14 SE15 SE16 SE17 SE18 SE19 SE20 SE21 SE22 SE23 SE24 SE25 SE26 SE27 SE28

SG — Central Bedfordshire (18)

SG1 SG2 SG3 SG4 SG5 SG6 SG7 SG8 SG9 SG10 SG11 SG12 SG13 SG14 SG15 SG16 SG17 SG18

SK — High Peak (2)

SL — Buckinghamshire (10)

SL0 SL1 SL2 SL3 SL4 SL5 SL6 SL7 SL8 SL9

SM — Sutton (7)

SM1 SM2 SM3 SM4 SM5 SM6 SM7

SN — Swindon (15)

SN1 SN2 SN3 SN4 SN5 SN7 SN8 SN9 SN10 SN11 SN12 SN13 SN15 SN25 SN26

SO — Eastleigh (24)

SO14 SO15 SO16 SO17 SO18 SO19 SO20 SO21 SO22 SO23 SO24 SO25 SO30 SO31 SO32 SO40 SO41 SO42 SO43 SO45 SO50 SO51 SO52 SO53

SP — Wiltshire (8)

SP1 SP2 SP3 SP4 SP6 SP9 SP10 SP11

SR — Sunderland (8)

SR1 SR2 SR3 SR4 SR5 SR6 SR7 SR8

ST — Stafford (21)

ST1 ST2 ST3 ST4 ST5 ST6 ST7 ST8 ST9 ST10 ST11 ST12 ST13 ST14 ST15 ST16 ST17 ST18 ST19 ST20 ST21

SW — Wandsworth (27)

SW1A SW1E SW1H SW1P SW1V SW1W SW1X SW1Y SW2 SW3 SW4 SW5 SW6 SW7 SW8 SW9 SW10 SW11 SW12 SW13 SW14 SW15 SW16 SW17 SW18 SW19 SW20

SY — Powys (23)

SY1 SY2 SY3 SY4 SY5 SY6 SY7 SY8 SY9 SY10 SY11 SY12 SY15 SY16 SY17 SY18 SY19 SY20 SY21 SY22 SY23 SY24 SY25

TA — Mid Devon (5)

TA3 TA4 TA11 TA21 TA22

TD — Northumberland (3)

TF — Shropshire (12)

TF1 TF2 TF3 TF4 TF5 TF6 TF7 TF8 TF10 TF11 TF12 TF13

TN — Hastings (17)

TN13 TN14 TN15 TN16 TN25 TN26 TN28 TN29 TN31 TN32 TN33 TN34 TN35 TN36 TN37 TN38 TN40

TQ — South Hams (12)

TQ1 TQ2 TQ3 TQ5 TQ6 TQ7 TQ9 TQ10 TQ11 TQ12 TQ13 TQ14

TR — Cornwall (27)

TR1 TR2 TR3 TR4 TR5 TR6 TR7 TR8 TR9 TR10 TR11 TR12 TR13 TR14 TR15 TR16 TR17 TR18 TR19 TR20 TR21 TR22 TR23 TR24 TR25 TR26 TR27

TS — Middlesbrough (28)

TS1 TS2 TS3 TS4 TS5 TS6 TS7 TS8 TS9 TS10 TS11 TS12 TS13 TS14 TS15 TS16 TS17 TS18 TS19 TS20 TS21 TS22 TS23 TS25 TS26 TS27 TS28 TS29

TW — Hounslow (20)

TW1 TW2 TW3 TW4 TW5 TW6 TW7 TW8 TW9 TW10 TW11 TW12 TW13 TW14 TW15 TW16 TW17 TW18 TW19 TW20

UB — Ealing (12)

UB1 UB2 UB3 UB4 UB5 UB6 UB7 UB8 UB9 UB10 UB11 UB18

W — Ealing (13)

W2 W3 W4 W5 W6 W7 W8 W9 W10 W11 W12 W13 W14

WD — Hertsmere (11)

WD3 WD4 WD5 WD6 WD7 WD17 WD18 WD19 WD23 WD24 WD25

WF — Kirklees (17)

WF1 WF2 WF3 WF4 WF5 WF6 WF7 WF8 WF9 WF10 WF11 WF12 WF13 WF14 WF15 WF16 WF17

WR — Worcester (15)

WR1 WR2 WR3 WR4 WR5 WR6 WR7 WR8 WR9 WR10 WR11 WR12 WR13 WR14 WR15

WS — Cannock Chase (15)

WS1 WS2 WS3 WS4 WS5 WS6 WS7 WS8 WS9 WS10 WS11 WS12 WS13 WS14 WS15

WV — Shropshire (16)

WV1 WV2 WV3 WV4 WV5 WV6 WV7 WV8 WV9 WV10 WV11 WV12 WV13 WV14 WV15 WV16

YO — North Yorkshire (29)

YO1 YO7 YO8 YO10 YO11 YO12 YO13 YO14 YO15 YO16 YO17 YO18 YO19 YO21 YO22 YO23 YO24 YO25 YO26 YO30 YO31 YO32 YO41 YO42 YO43 YO51 YO60 YO61 YO62