Yorkshire Water Hardness: 150-300 ppm

Yorkshire Water Water Hardness Summary

Yorkshire Water water is hard, averaging 215 ppm as calcium carbonate, ranging from 150 to 300 ppm across 217 postcode districts in Yorkshire & Humberside.

Average hardness	215 ppm (Hard)
Hardness range	150 to 300 ppm
Classification	Hard
Districts served	217
Region	Yorkshire & Humberside

Average hardness

215 ppm (Hard)

Hardness range

150 to 300 ppm

Classification

Hard

Districts served

217

Region

Yorkshire & Humberside

About Yorkshire Water

Yorkshire Water supplies water and wastewater services to around 5 million customers across Yorkshire. The region has mixed geology — soft water from Pennine reservoirs in the west and harder groundwater in the east.

At 215 ppm on average, Yorkshire Water ranks as hard water. See how it compares across the UK in our 50 hardest water areas ranking.

Worth reading: our water softener guide compares the options for Yorkshire Water customers, and our limescale removal guide has quick fixes for kettles, taps, and boilers.

Cross-check this against Yorkshire Water's own data: Yorkshire Water water hardness report. Enter your postcode in the search tool to get the calcium and magnesium hardness level for your specific area.

Yorkshire Water vs Other UK Water Companies

Average hardness across the 15 largest UK water suppliers, hardest first. Your supplier is highlighted.

Rank	Water company	Avg ppm	Classification	Districts
1	Anglian Water	321 ppm	Very Hard	261
2	Thames Water	302 ppm	Very Hard	412
3	South East Water	297 ppm	Hard	17
4	Affinity Water	268 ppm	Hard	32
5	Southern Water	263 ppm	Hard	131
6	Portsmouth Water	261 ppm	Hard	34
7	SES Water	239 ppm	Hard	7
8	Wessex Water	231 ppm	Hard	123
9	Severn Trent Water	222 ppm	Hard	345
10	Yorkshire Water	215 ppm	Hard	217
11	Northumbrian Water	101 ppm	Slightly Hard	122
12	South West Water	80 ppm	Slightly Hard	129
13	United Utilities	77 ppm	Slightly Hard	242
14	Welsh Water (Dwr Cymru)	68 ppm	Slightly Hard	214
15	Scottish Water	54 ppm	Soft	3

Areas Served by Yorkshire Water

Every postcode district, sorted by hardness.

Postcode	Town	Hardness	PPM	Level
BD10	Bradford	300	300 ppm	Hard
S12	Sheffield	300	300 ppm	Hard
LS9	Leeds	299	299 ppm	Hard
S11	Sheffield	299	299 ppm	Hard
LS8	Leeds	298	298 ppm	Hard
S10	Sheffield	298	298 ppm	Hard
LS7	Leeds	297	297 ppm	Hard
LS6	Leeds	296	296 ppm	Hard
LS5	Leeds	295	295 ppm	Hard
LS4	Leeds	294	294 ppm	Hard
LS3	Leeds	293	293 ppm	Hard
LS2	Leeds	292	292 ppm	Hard
LS1	Leeds	291	291 ppm	Hard
HD9	Holmfirth	280	280 ppm	Hard
S9	Sheffield	280	280 ppm	Hard
YO8	Selby	280	280 ppm	Hard
HD8	Huddersfield	279	279 ppm	Hard
S8	Sheffield	279	279 ppm	Hard
YO7	Thirsk	279	279 ppm	Hard
HD7	Huddersfield	278	278 ppm	Hard
S7	Sheffield	278	278 ppm	Hard
YO43	York	278	278 ppm	Hard
HD6	Brighouse	277	277 ppm	Hard
S6	Sheffield	277	277 ppm	Hard
YO42	York	277	277 ppm	Hard
HD5	Huddersfield	276	276 ppm	Hard
S5	Sheffield	276	276 ppm	Hard
YO41	York	276	276 ppm	Hard
HD4	Huddersfield	275	275 ppm	Hard
S4	Sheffield	275	275 ppm	Hard
HD3	Huddersfield	274	274 ppm	Hard
S3	Sheffield	274	274 ppm	Hard
HD2	Huddersfield	273	273 ppm	Hard
S2	Sheffield	273	273 ppm	Hard
YO1	York	273	273 ppm	Hard
HD1	Huddersfield	272	272 ppm	Hard
S1	Sheffield	272	272 ppm	Hard
HU20	Cottingham	267	267 ppm	Hard
DN41	Grimsby	265	265 ppm	Hard
DN40	Immingham	264	264 ppm	Hard
S45	Chesterfield	251	251 ppm	Hard
S44	Chesterfield	250	250 ppm	Hard
S43	Chesterfield	249	249 ppm	Hard
S42	Chesterfield	248	248 ppm	Hard
S41	Chesterfield	247	247 ppm	Hard
S40	Chesterfield	246	246 ppm	Hard
YO32	York	244	244 ppm	Hard
HU19	Withernsea	243	243 ppm	Hard
YO31	York	243	243 ppm	Hard
HU18	Hornsea	242	242 ppm	Hard
YO30	York	242	242 ppm	Hard
HU17	Beverley	241	241 ppm	Hard
DN39	Ulceby	240	240 ppm	Hard
HU16	Cottingham	240	240 ppm	Hard
BD9	Bradford	239	239 ppm	Hard
DN38	Barnetby	239	239 ppm	Hard
HU15	Brough	239	239 ppm	Hard
BD8	Bradford	238	238 ppm	Hard
DN37	Grimsby	238	238 ppm	Hard
HU14	North Ferriby	238	238 ppm	Hard
BD7	Bradford	237	237 ppm	Hard
DN36	Grimsby	237	237 ppm	Hard
HU13	Hessle	237	237 ppm	Hard
HU9	Hull	237	237 ppm	Hard
BD6	Bradford	236	236 ppm	Hard
DN35	Cleethorpes	236	236 ppm	Hard
HU12	Hull	236	236 ppm	Hard
HU8	Hull	236	236 ppm	Hard
BD5	Bradford	235	235 ppm	Hard
DN34	Grimsby	235	235 ppm	Hard
HU11	Hull	235	235 ppm	Hard
HU7	Hull	235	235 ppm	Hard
BD4	Bradford	234	234 ppm	Hard
DN33	Grimsby	234	234 ppm	Hard
HU10	Hull	234	234 ppm	Hard
HU6	Hull	234	234 ppm	Hard
BD3	Bradford	233	233 ppm	Hard
DN32	Grimsby	233	233 ppm	Hard
HU5	Hull	233	233 ppm	Hard
BD2	Bradford	232	232 ppm	Hard
DN31	Grimsby	232	232 ppm	Hard
HU4	Hull	232	232 ppm	Hard
BD1	Bradford	231	231 ppm	Hard
HU3	Hull	231	231 ppm	Hard
HU2	Hull	230	230 ppm	Hard
HU1	Hull	229	229 ppm	Hard
S81	Worksop	228	228 ppm	Hard
S80	Worksop	227	227 ppm	Hard
HG5	Knaresborough	224	224 ppm	Hard
HG4	Ripon	223	223 ppm	Hard
HG3	Harrogate	222	222 ppm	Hard
WF9	Pontefract	222	222 ppm	Hard
HG2	Harrogate	221	221 ppm	Hard
WF8	Pontefract	221	221 ppm	Hard
HG1	Harrogate	220	220 ppm	Hard
WF7	Pontefract	220	220 ppm	Hard
S36	Sheffield	219	219 ppm	Hard
WF6	Normanton	219	219 ppm	Hard
S35	Sheffield	218	218 ppm	Hard
WF5	Ossett	218	218 ppm	Hard
WF4	Wakefield	217	217 ppm	Hard
S33	Hope Valley	216	216 ppm	Hard
WF3	Wakefield	216	216 ppm	Hard
S32	Hope Valley	215	215 ppm	Hard
WF2	Wakefield	215	215 ppm	Hard
YO26	York	215	215 ppm	Hard
WF1	Wakefield	214	214 ppm	Hard
YO25	Driffield	214	214 ppm	Hard
YO24	York	213	213 ppm	Hard
YO23	York	212	212 ppm	Hard
YO22	Whitby	211	211 ppm	Hard
YO21	Whitby	210	210 ppm	Hard
LS29	Ilkley	208	208 ppm	Hard
LS28	Pudsey	207	207 ppm	Hard
LS27	Leeds	206	206 ppm	Hard
LS26	Leeds	205	205 ppm	Hard
LS25	Leeds	204	204 ppm	Hard
LS24	Tadcaster	203	203 ppm	Hard
LS23	Wetherby	202	202 ppm	Hard
LS22	Wetherby	201	201 ppm	Hard
DN22	Retford	200	200 ppm	Hard
LS21	Otley	200	200 ppm	Hard
DN21	Gainsborough	199	199 ppm	Hard
LS20	Leeds	199	199 ppm	Hard
S75	Barnsley	199	199 ppm	Hard
WF17	Batley	199	199 ppm	Hard
DN20	Brigg	198	198 ppm	Hard
S74	Barnsley	198	198 ppm	Hard
WF16	Heckmondwike	198	198 ppm	Hard
S73	Barnsley	197	197 ppm	Hard
WF15	Liversedge	197	197 ppm	Hard
S72	Barnsley	196	196 ppm	Hard
WF14	Mirfield	196	196 ppm	Hard
S71	Barnsley	195	195 ppm	Hard
WF13	Dewsbury	195	195 ppm	Hard
S70	Barnsley	194	194 ppm	Hard
WF12	Dewsbury	194	194 ppm	Hard
WF11	Knottingley	193	193 ppm	Hard
WF10	Castleford	192	192 ppm	Hard
YO62	York	192	192 ppm	Hard
YO61	York	191	191 ppm	Hard
YO60	York	190	190 ppm	Hard
BD24	Settle	186	186 ppm	Hard
S26	Sheffield	186	186 ppm	Hard
BD23	Skipton	185	185 ppm	Hard
S25	Sheffield	185	185 ppm	Hard
YO19	York	185	185 ppm	Hard
BD22	Keighley	184	184 ppm	Hard
YO18	Pickering	184	184 ppm	Hard
BD21	Keighley	183	183 ppm	Hard
HX7	Hebden Bridge	183	183 ppm	Hard
YO17	Malton	183	183 ppm	Hard
BD20	Keighley	182	182 ppm	Hard
HX6	Sowerby Bridge	182	182 ppm	Hard
YO16	Bridlington	182	182 ppm	Hard
HX5	Elland	181	181 ppm	Hard
S21	Sheffield	181	181 ppm	Hard
YO15	Bridlington	181	181 ppm	Hard
DN9	Doncaster	180	180 ppm	Moderately Hard
HX4	Halifax	180	180 ppm	Moderately Hard
S20	Sheffield	180	180 ppm	Moderately Hard
YO14	Filey	180	180 ppm	Moderately Hard
DN8	Doncaster	179	179 ppm	Moderately Hard
HX3	Halifax	179	179 ppm	Moderately Hard
YO13	Scarborough	179	179 ppm	Moderately Hard
DN7	Doncaster	178	178 ppm	Moderately Hard
HX2	Halifax	178	178 ppm	Moderately Hard
YO12	Scarborough	178	178 ppm	Moderately Hard
DN6	Doncaster	177	177 ppm	Moderately Hard
HX1	Halifax	177	177 ppm	Moderately Hard
YO11	Scarborough	177	177 ppm	Moderately Hard
DN5	Doncaster	176	176 ppm	Moderately Hard
YO10	York	176	176 ppm	Moderately Hard
DN4	Doncaster	175	175 ppm	Moderately Hard
LS19	Leeds	175	175 ppm	Moderately Hard
DN19	Barrow Upon Humber	174	174 ppm	Moderately Hard
DN3	Doncaster	174	174 ppm	Moderately Hard
LS18	Leeds	174	174 ppm	Moderately Hard
DN18	Barton Upon Humber	173	173 ppm	Moderately Hard
DN2	Doncaster	173	173 ppm	Moderately Hard
LS17	Leeds	173	173 ppm	Moderately Hard
DN1	Doncaster	172	172 ppm	Moderately Hard
DN17	Scunthorpe	172	172 ppm	Moderately Hard
LS16	Leeds	172	172 ppm	Moderately Hard
DN16	Scunthorpe	171	171 ppm	Moderately Hard
LS15	Leeds	171	171 ppm	Moderately Hard
DN15	Scunthorpe	170	170 ppm	Moderately Hard
LS14	Leeds	170	170 ppm	Moderately Hard
DN14	Goole	169	169 ppm	Moderately Hard
LS13	Leeds	169	169 ppm	Moderately Hard
LS12	Leeds	168	168 ppm	Moderately Hard
DN12	Doncaster	167	167 ppm	Moderately Hard
LS11	Leeds	167	167 ppm	Moderately Hard
S66	Rotherham	167	167 ppm	Moderately Hard
DN11	Doncaster	166	166 ppm	Moderately Hard
LS10	Leeds	166	166 ppm	Moderately Hard
S65	Rotherham	166	166 ppm	Moderately Hard
DN10	Doncaster	165	165 ppm	Moderately Hard
S64	Mexborough	165	165 ppm	Moderately Hard
S63	Rotherham	164	164 ppm	Moderately Hard
S62	Rotherham	163	163 ppm	Moderately Hard
S61	Rotherham	162	162 ppm	Moderately Hard
S60	Rotherham	161	161 ppm	Moderately Hard
BD19	Cleckheaton	158	158 ppm	Moderately Hard
YO51	York	158	158 ppm	Moderately Hard
BD18	Shipley	157	157 ppm	Moderately Hard
BD17	Shipley	156	156 ppm	Moderately Hard
BD16	Bingley	155	155 ppm	Moderately Hard
S18	Dronfield	155	155 ppm	Moderately Hard
BD15	Bradford	154	154 ppm	Moderately Hard
S17	Sheffield	154	154 ppm	Moderately Hard
BD14	Bradford	153	153 ppm	Moderately Hard
BD13	Bradford	152	152 ppm	Moderately Hard
BD12	Bradford	151	151 ppm	Moderately Hard
S14	Sheffield	151	151 ppm	Moderately Hard
BD11	Bradford	150	150 ppm	Moderately Hard
S13	Sheffield	150	150 ppm	Moderately Hard

Products for Yorkshire Water Customers

Popular choices for households on hard water.

Splendid Twin Tank Water Softener

From ~£400

Twin-tank electric softener sized for 1 to 7 bedroom homes. Removes limescale from pipes, boilers, and appliances and delivers continuous soft water, with metered regeneration to keep salt use low.

View on Amazon

Philips Shower Filter

From ~£30

A quick, affordable upgrade. Reduces chlorine and limescale at the showerhead, fits any standard UK shower hose in minutes. Protects skin and hair from hard water damage.

View on Amazon

Common questions about Yorkshire Water water hardness

How do I check Yorkshire Water hardness by postcode?

Enter your postcode in the checker on the WaterHard.uk homepage, or find your district in the table above. Yorkshire Water serves 217 postcode districts across Yorkshire & Humberside, ranging from 150 to 300 ppm.

Is there a Yorkshire Water hardness checker or map?

Yorkshire Water publishes water quality data by postcode, but it can be scattered across PDF reports. WaterHard.uk compiles it into the searchable table above so you can find your district's reading in one place.

How hard is Yorkshire Water water in my area?

It depends on your exact postcode. Yorkshire Water supplies range from 150 ppm to 300 ppm, averaging 215 ppm (hard) across 217 postcode districts in Yorkshire & Humberside. Use the table above to find your specific district.

Do I need a water softener with Yorkshire Water?

At 215 ppm (hard), many households on Yorkshire Water notice limescale in kettles and showerheads within weeks. A shower filter is the cheapest first step; a whole-house softener gives the most complete protection. See our water softener guide for a full comparison.

Yorkshire Water Hardness

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