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Tap water supply in Mae Sai has been 80% restored, Sai River arsenic level remains high
AI In-brief Yesterday 13:52

Tap water supply in Mae Sai has been 80% restored, Sai River arsenic level remains high

  • Mae Sai district's tap water supply is 80% restored, yet its raw water source, the Sai River, contains arsenic levels 28 times the safety standard.
  • Authorities confirm arsenic levels at 0.25ml (compared to a 0.01ml standard), attributing it to upstream rainfall washing heavy metals into the river, with consistent high readings since August.
  • Provincial plans are underway to develop new water sources in Chiang Saen district and establish underground water reserves to secure Mae Sai's long-term water supply.
  • Current turbidity in the Sai River, reaching up to 14,000 NTU, significantly exceeds the Provincial Waterworks Authority's filtration capacity of 6,000 NTU, posing immediate treatment challenges.
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