Why Your Water Tastes Like Arsenic: Causes & Solutions

What Causes Arsenic in Water?

Arsenic is a naturally occurring element found in rocks and soil. When water flows through arsenic-containing formations, it can dissolve into your drinking water. This is particularly common in areas with arsenic-rich geological deposits.

Natural Sources

• Bedrock contamination: Underground aquifers passing through arsenic-bearing rocks
• Volcanic activity: Areas near geothermal activity may have elevated levels
• Mining operations: Historical or active mines can release arsenic into groundwater

Human-Made Sources

• Agricultural pesticides and fertilizers
• Industrial waste disposal
• Wood preservatives and chemical manufacturing

Why Your Water Tastes Like Arsenic: Recognizing the Signs

Understanding why your water tastes like arsenic requires knowing what to detect. Arsenic itself has no distinct taste in small amounts, but water with arsenic often has accompanying characteristics:

Important: You cannot reliably detect arsenic by taste alone. Laboratory testing is the only accurate method.

Health Risks of Arsenic in Drinking Water

Arsenic contamination poses serious health threats. Long-term exposure, even at low levels, can cause:

1. Skin problems: Lesions, pigmentation changes, and thickening
2. Cardiovascular disease: Increased risk of heart conditions
3. Neurological effects: Numbness, tingling in extremities
4. Cancer risk: Bladder, lung, and skin cancers
5. Diabetes: Higher susceptibility to type 2 diabetes

The World Health Organization (WHO) sets the maximum arsenic level at 10 parts per billion (ppb) for safe drinking water.

Testing Your Water for Arsenic

If you suspect arsenic contamination, take these steps:

Professional Laboratory Testing

• Collect samples following strict protocols
• Send to certified laboratories
• Receive accurate concentration measurements

Home Test Kits

While less precise, home kits provide preliminary screening:

1. Purchase EPA-recognized test strips
2. Follow package instructions carefully
3. Compare results to safety standards
4. Confirm positive results with professional testing

Solutions for Arsenic-Contaminated Water

Point-of-Use Filtration

Reverse osmosis systems remove up to 99% of arsenic. These under-sink units provide clean water for drinking and cooking.

Whole-House Treatment

For comprehensive protection, consider:

• Activated alumina filters: Effective for arsenic removal
• Ion exchange systems: Replace arsenic ions with harmless ions
• Distillation units: Boil and collect purified water vapor

Professional Intervention

Professional plumbers can assess your situation and recommend appropriate solutions based on contamination levels and household needs.

Preventing Future Contamination

• Test private wells annually
• Monitor industrial activities nearby
• Install appropriate filtration systems
• Stay informed about local water quality reports