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Change in Well Water Taste or Smell? Well Water Testing

Uncategorized | February 02, 2026

Sudden Change in Taste or Smell? What Type of Well Water Testing Should Langley Homeowners Do

If your well water suddenly tastes different or develops an unusual smell, it’s not something to brush off. For many Langley homeowners, a change in taste or odour is often the first sign that something in the groundwater, or the well system itself, has changed.

At EDS Pumps & Water Treatment, we regularly help homeowners across Langley and the Fraser Valley pinpoint the cause of these changes and determine exactly what should be tested before the issue turns into a bigger problem.

Learn more about water testing at EDS Pumps & Water Treatment here.

Well Water Testing - EDS Pumps and Water Treatment


Why Well Water Taste and Smell Can Change Suddenly

Private wells are directly influenced by the surrounding environment. Unlike municipal water systems, well water can shift quickly due to seasonal conditions, nearby activity, or changes within the well itself.

Common causes include changing groundwater levels, heavy rainfall or snowmelt, aging well components, agricultural runoff, or increased water demand in the home. Even if your water has been consistent for years, a sudden change often means something new has entered the system.


Rotten Egg Smell in Well Water? Test for Sulphur

A strong rotten egg smell is one of the most common well water complaints in Langley.

This odour is usually linked to hydrogen sulphide gas or sulphur-reducing bacteria, which can develop in the well, plumbing, or hot water tank.

While sulphur is not typically a serious health risk, it can make water unpleasant to use, corrode plumbing components, and indicate bacterial activity. Testing helps identify the source so the correct treatment, such as filtration or disinfection, can be recommended.

Sulphur in Well Water


Metallic Taste or Staining? Test for Iron and Manganese

A metallic taste or visible staining is often caused by naturally occurring minerals in groundwater, particularly iron and manganese.

You may notice:

  • A metallic or bitter taste
  • Orange, brown, or black staining on fixtures
  • Buildup in pipes or appliances

These minerals are common in Fraser Valley groundwater and, while not usually harmful, they can damage plumbing, shorten appliance lifespan, and negatively affect water quality if left untreated.

 


Musty or Earthy Smell? Test for Organic Matter and Bacteria

If your water smells musty, earthy, or swampy, it may be due to organic material entering the well. This often happens when surface water infiltrates the well or when a well cap or seal begins to fail.

Because these conditions can allow bacteria to thrive, bacterial testing is especially important. Even when the water looks clear, harmful bacteria can still be present without obvious warning signs.

Smelly Well Water


Salty or Bitter Taste? Test for Nitrates and Total Dissolved Solids

A salty, bitter, or chemical-like taste may indicate elevated nitrates or Total Dissolved Solids (TDS), particularly in rural and agricultural areas around Langley.

Testing is recommended if:

  • Your home is near farmland or septic systems
  • The taste change appears suddenly
  • There are infants, elderly individuals, or pregnant women in the household

Nitrates are tasteless at low levels, making routine testing the only reliable way to detect them.


Sudden Taste Change Without Odour? Test pH and Hardness

Sometimes well water tastes different even when there’s no noticeable smell. In these cases, changes in pH or hardness are often the cause.

Low or high pH levels can affect flavour and contribute to corrosion or scale buildup. Hard water minerals like calcium and magnesium can leave water tasting flat or chalky and cause issues with plumbing and appliances over time.

Water Testing At Home


Common Water Treatment and Filtration Solutions for Taste and Smell Issues

Once testing identifies the cause of a taste or smell issue, the right water treatment system can make a significant difference.

Depending on your results, common solutions for well owners include carbon filtration systems to improve taste and odour, iron and manganese filters to remove metallic flavours and staining, sulphur filtration or oxidation systems for rotten egg smells, UV water treatment systems to protect against bacteria, water softeners to address hardness and improve overall taste, and reverse osmosis systems for drinking water when nitrates or dissolved solids are present.

The most effective system always depends on your specific water chemistry, which is why professional testing is essential before choosing a solution.

Well Water Filtration

When Should Langley Homeowners Test Their Well Water?

You should consider professional well water testing if:

  • There is any sudden change in taste or smell
  • You notice staining, cloudiness, or buildup
  • Plumbing or water-using appliances are acting differently
  • It has been over a year since your last water test

Taste and smell changes are often early warnings—testing early can prevent more serious and costly problems.


Professional Well Water Testing in Langley & the Fraser Valley

At EDS Pumps & Water Treatment, we provide professional well water testing designed for local groundwater conditions in Langley, Surrey, Abbotsford and Maple Ridge and Mission. Our experienced team explains your results clearly and recommends only the treatment solutions that make sense for your home.

With over 65 years serving Langley and the Fraser Valley, homeowners trust EDS for honest advice, accurate testing, and long-term water quality solutions.


Don’t Ignore Changes in Your Well Water

If your well water suddenly tastes or smells different, it’s telling you something. Identifying the cause early is the best way to protect your water, plumbing, and peace of mind.

Contact EDS Pumps & Water Treatment today by email at info@edspumps.com or call (604) 534 – 1115 to book professional well water testing in Langley and surrounding areas.


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