Water hardness

SG19 Sandy

Harder than the UK average. Expect visible limescale on kettles and taps.

At 337 ppm, Sandy sits among the UK's hardest water areas — compare it against the softest areas.

Very Hard 337 ppm East Of England Anglian Water

Your reading

337

parts per million

Soft

Moderate

Hard

Very hard

0100200300400+

What this means for your home

Based on 337 ppm in Sandy (very hard water).

Heavy limescale requiring frequent descaling
Blocked showerheads and reduced water flow
Substantially higher energy bills from boiler scale
Dry, itchy skin and lifeless hair
White crusty deposits on taps and surfaces
Reduced lifespan of washing machines and dishwashers

Heat loss

12%

Heavy scaling

Softener salt

£19–33

per year

Worth it?

Yes

at 337 ppm

Suggested for very hard water

Whole-house water softener

Best long-term protection for boilers and pipes.

From £600 installed

Shower head filter

A simple first step for limescale on tiles and glass.

From £25

Filter jug or under-sink

Improves taste and reduces kettle scale.

From £20

Softening

Should you soften the water in Sandy?

A verdict and running-cost estimate based on SG19's 337 ppm reading, for a typical 4-person household.

Softener recommended

Water is hard to very hard, so appliance, scale and soap savings typically pay back a softener within a few years.

Recommended size

24k

grain capacity, regenerates ~every 7.9 days

Salt running cost

£19–33

per year (~69 kg salt)

Limescale

12%

est. heater efficiency loss. Heavy scaling

Soap saving

High

Large saving: many homes cut soap, shampoo and detergent use by up to half.

Appliance impact at 337 ppm: significant: elements fur up, expect earlier failures. Sized for a 4-person home; regenerates roughly every 8 days (estimate). Figures are conservative estimates and vary with household size and usage.

Recommended

Products for Sandy

Popular choices for households dealing with very 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

Quick win for skin and hair in hard water areas. Reduces chlorine and limescale, fits standard shower hoses in minutes, no tools needed. Cartridge lasts around 6 months.

View on Amazon

BRITA Marella Water Filter Jug

From ~£20

UK's best-selling filter jug. Reduces limescale, chlorine, and metals for better-tasting tap water. Quick first step alongside a softener.

View on Amazon

Water quality details

Hardness data for SG19

Sourced from Anglian Water's published water-quality reports and public records.

Hardness measurements

Parts per million (ppm CaCO₃)	337
Degrees Clark (°Clark)	23.6
Degrees French (°fH)	33.7
Degrees German (°dH)	18.9
Calcium (mg/L Ca²⁺)	135

Supplier and area

Water supplier Anglian Water

Region East Of England

County Hertfordshire

Hardness band Very Hard

UK average 207 ppm

Visit Anglian Water page

Official source

Anglian Water Services Ltd water-hardness report

Read the hard water explainer then use the linked postcode checker to confirm if you are in a hard water area; the region averages very hard.

Nearby

Other areas near Sandy

FAQ

Common questions about SG19

What is the water hardness in SG19 Sandy?

The water in SG19 Sandy has a hardness level of 337 ppm (parts per million) calcium carbonate, classified as very hard. This is 130 ppm above the UK national average of 207 ppm.

Which water company supplies SG19?

SG19 Sandy is supplied by Anglian Water. Anglian Water serves the East Of England region.

Is the water in SG19 safe to drink?

Yes. Very Hard water at 337 ppm is safe to drink. Water hardness affects taste and can cause limescale, but it is not a health risk. In fact, hard water contains beneficial minerals like calcium and magnesium.

How can I reduce water hardness in SG19?

For very hard water at 337 ppm, a whole-house water softener is the most effective solution. You can also use a jug filter for drinking water, descaling products for appliances, and a shower filter for better skin and hair.

What does 337 ppm water hardness mean?

337 ppm means there are 337 parts per million of calcium carbonate dissolved in the water. This is equivalent to 23.6 Clark degrees, 18.9 German degrees, or 33.7 French degrees. Water above 180 ppm is generally considered hard.

What size water softener do I need in SG19?

For a typical 4-person home at 337 ppm, a 24,000 grain softener is a sensible size. It would regenerate roughly every 7.9 days. Larger households or higher daily use need a bigger unit. These figures are conservative estimates.

How much does it cost to run a water softener in SG19?

At 337 ppm, expect to use about 69 kg of salt a year, costing roughly £19–£33/year. Water is hard to very hard, so appliance, scale and soap savings typically pay back a softener within a few years.

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