Northumbrian Water Water Hardness

North East England • 122 postcodes served

Slightly Hard

101

Average ppm

Minimum ppm

150

Maximum ppm

122

Postcodes Served

About Northumbrian Water

Northumbrian Water supplies water to 2.7 million people in the north east of England. The supply comes primarily from Kielder Water and other upland reservoirs, producing moderately soft water.

Hardness Distribution

Soft (13%)

Slightly Hard (55%)

Moderate (32%)

Hard (0%)

Very Hard (0%)

All Areas Served by Northumbrian Water

Postcode	Town	Hardness	PPM	Level
DH7	Durham	150 ppm	150 ppm	Moderately Hard
NE35	Boldon Colliery	150 ppm	150 ppm	Moderately Hard
NE67	Chathill	150 ppm	150 ppm	Moderately Hard
SR7	Seaham	150 ppm	150 ppm	Moderately Hard
DH6	Durham	149 ppm	149 ppm	Moderately Hard
NE34	South Shields	149 ppm	149 ppm	Moderately Hard
NE66	Alnwick	149 ppm	149 ppm	Moderately Hard
SR6	Sunderland	149 ppm	149 ppm	Moderately Hard
DH5	Houghton Le Spring	148 ppm	148 ppm	Moderately Hard
NE33	South Shields	148 ppm	148 ppm	Moderately Hard
NE65	Morpeth	148 ppm	148 ppm	Moderately Hard
SR5	Sunderland	148 ppm	148 ppm	Moderately Hard
DH4	Houghton Le Spring	147 ppm	147 ppm	Moderately Hard
NE32	Jarrow	147 ppm	147 ppm	Moderately Hard
NE64	Newbiggin By The Sea	147 ppm	147 ppm	Moderately Hard
SR4	Sunderland	147 ppm	147 ppm	Moderately Hard
DH3	Chester Le Street	146 ppm	146 ppm	Moderately Hard
NE31	Hebburn	146 ppm	146 ppm	Moderately Hard
NE63	Ashington	146 ppm	146 ppm	Moderately Hard
SR3	Sunderland	146 ppm	146 ppm	Moderately Hard
DH2	Chester Le Street	145 ppm	145 ppm	Moderately Hard
NE30	North Shields	145 ppm	145 ppm	Moderately Hard
NE62	Choppington	145 ppm	145 ppm	Moderately Hard
SR2	Sunderland	145 ppm	145 ppm	Moderately Hard
DH1	Durham	144 ppm	144 ppm	Moderately Hard
NE61	Morpeth	144 ppm	144 ppm	Moderately Hard
SR1	Sunderland	144 ppm	144 ppm	Moderately Hard
NE9	Gateshead	136 ppm	136 ppm	Moderately Hard
NE8	Gateshead	135 ppm	135 ppm	Moderately Hard
NE7	Newcastle Upon Tyne	134 ppm	134 ppm	Moderately Hard
NE6	Newcastle Upon Tyne	133 ppm	133 ppm	Moderately Hard
NE5	Newcastle Upon Tyne	132 ppm	132 ppm	Moderately Hard
NE4	Newcastle Upon Tyne	131 ppm	131 ppm	Moderately Hard
NE3	Newcastle Upon Tyne	130 ppm	130 ppm	Moderately Hard
NE2	Newcastle Upon Tyne	129 ppm	129 ppm	Moderately Hard
NE1	Newcastle Upon Tyne	128 ppm	128 ppm	Moderately Hard
DL17	Ferryhill	122 ppm	122 ppm	Moderately Hard
DL16	Spennymoor	121 ppm	121 ppm	Moderately Hard
NE29	North Shields	121 ppm	121 ppm	Moderately Hard
DL15	Crook	120 ppm	120 ppm	Slightly Hard
NE28	Wallsend	120 ppm	120 ppm	Slightly Hard
DL14	Bishop Auckland	119 ppm	119 ppm	Slightly Hard
NE27	Newcastle Upon Tyne	119 ppm	119 ppm	Slightly Hard
DL13	Bishop Auckland	118 ppm	118 ppm	Slightly Hard
NE26	Whitley Bay	118 ppm	118 ppm	Slightly Hard
DL12	Barnard Castle	117 ppm	117 ppm	Slightly Hard
NE25	Whitley Bay	117 ppm	117 ppm	Slightly Hard
DL11	Richmond	116 ppm	116 ppm	Slightly Hard
NE24	Blyth	116 ppm	116 ppm	Slightly Hard
DL10	Richmond	115 ppm	115 ppm	Slightly Hard
NE23	Cramlington	115 ppm	115 ppm	Slightly Hard
NE22	Bedlington	114 ppm	114 ppm	Slightly Hard
NE21	Blaydon On Tyne	113 ppm	113 ppm	Slightly Hard
NE20	Newcastle Upon Tyne	112 ppm	112 ppm	Slightly Hard
TS29	Trimdon Station	103 ppm	103 ppm	Slightly Hard
TS28	Wingate	102 ppm	102 ppm	Slightly Hard
TS27	Hartlepool	101 ppm	101 ppm	Slightly Hard
TS26	Hartlepool	100 ppm	100 ppm	Slightly Hard
TS25	Hartlepool	99 ppm	99 ppm	Slightly Hard
TS24	Hartlepool	98 ppm	98 ppm	Slightly Hard
TS23	Billingham	97 ppm	97 ppm	Slightly Hard
TS22	Billingham	96 ppm	96 ppm	Slightly Hard
TS21	Stockton On Tees	95 ppm	95 ppm	Slightly Hard
TS20	Stockton On Tees	94 ppm	94 ppm	Slightly Hard
NE19	Newcastle Upon Tyne	88 ppm	88 ppm	Slightly Hard
NE18	Newcastle Upon Tyne	87 ppm	87 ppm	Slightly Hard
NE17	Newcastle Upon Tyne	86 ppm	86 ppm	Slightly Hard
NE49	Haltwhistle	86 ppm	86 ppm	Slightly Hard
NE16	Newcastle Upon Tyne	85 ppm	85 ppm	Slightly Hard
NE48	Hexham	85 ppm	85 ppm	Slightly Hard
NE15	Newcastle Upon Tyne	84 ppm	84 ppm	Slightly Hard
NE47	Hexham	84 ppm	84 ppm	Slightly Hard
NE46	Hexham	83 ppm	83 ppm	Slightly Hard
DL9	Catterick Garrison	82 ppm	82 ppm	Slightly Hard
NE13	Newcastle Upon Tyne	82 ppm	82 ppm	Slightly Hard
NE45	Corbridge	82 ppm	82 ppm	Slightly Hard
DL8	Bedale	81 ppm	81 ppm	Slightly Hard
NE12	Newcastle Upon Tyne	81 ppm	81 ppm	Slightly Hard
NE44	Riding Mill	81 ppm	81 ppm	Slightly Hard
DL7	Northallerton	80 ppm	80 ppm	Slightly Hard
NE11	Gateshead	80 ppm	80 ppm	Slightly Hard
NE43	Stocksfield	80 ppm	80 ppm	Slightly Hard
DL6	Northallerton	79 ppm	79 ppm	Slightly Hard
NE10	Gateshead	79 ppm	79 ppm	Slightly Hard
NE42	Prudhoe	79 ppm	79 ppm	Slightly Hard
DL5	Newton Aycliffe	78 ppm	78 ppm	Slightly Hard
NE41	Wylam	78 ppm	78 ppm	Slightly Hard
DL4	Shildon	77 ppm	77 ppm	Slightly Hard
NE40	Ryton	77 ppm	77 ppm	Slightly Hard
DL3	Darlington	76 ppm	76 ppm	Slightly Hard
NE71	Wooler	76 ppm	76 ppm	Slightly Hard
DL2	Darlington	75 ppm	75 ppm	Slightly Hard
NE70	Belford	75 ppm	75 ppm	Slightly Hard
DL1	Darlington	74 ppm	74 ppm	Slightly Hard
TS19	Stockton On Tees	70 ppm	70 ppm	Slightly Hard
TS18	Stockton On Tees	69 ppm	69 ppm	Slightly Hard
TS17	Stockton On Tees	68 ppm	68 ppm	Slightly Hard
TS16	Stockton On Tees	67 ppm	67 ppm	Slightly Hard
TS15	Yarm	66 ppm	66 ppm	Slightly Hard
TS14	Guisborough	65 ppm	65 ppm	Slightly Hard
TS13	Saltburn By The Sea	64 ppm	64 ppm	Slightly Hard
TS12	Saltburn By The Sea	63 ppm	63 ppm	Slightly Hard
TS11	Redcar	62 ppm	62 ppm	Slightly Hard
TS9	Middlesbrough	62 ppm	62 ppm	Slightly Hard
TS10	Redcar	61 ppm	61 ppm	Slightly Hard
TS8	Middlesbrough	61 ppm	61 ppm	Slightly Hard
TS7	Middlesbrough	60 ppm	60 ppm	Soft
TS6	Middlesbrough	59 ppm	59 ppm	Soft
TS5	Middlesbrough	58 ppm	58 ppm	Soft
TS4	Middlesbrough	57 ppm	57 ppm	Soft
TS3	Middlesbrough	56 ppm	56 ppm	Soft
TS2	Middlesbrough	55 ppm	55 ppm	Soft
TS1	Middlesbrough	54 ppm	54 ppm	Soft
NE39	Rowlands Gill	53 ppm	53 ppm	Soft
NE38	Washington	52 ppm	52 ppm	Soft
DH9	Stanley	51 ppm	51 ppm	Soft
NE37	Washington	51 ppm	51 ppm	Soft
NE69	Bamburgh	51 ppm	51 ppm	Soft
DH8	Consett	50 ppm	50 ppm	Soft
NE36	East Boldon	50 ppm	50 ppm	Soft
NE68	Seahouses	50 ppm	50 ppm	Soft
SR8	Peterlee	50 ppm	50 ppm	Soft

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