Submitted to AMAP

• From September 2025
  Community submissions: 4 reportsCombined into this case.
• 2025
  SARW field photographsKafue River after the spill, including water hyacinth growth.
• Company and authorities
  No responses yetResponses were requested by 16 October 2026. Earlier public statements are listed under Responses and updates.

Assessment so far

• EstablishedThe tailings dam failed on 18 February 2025 and acidic effluent entered the Kafue River system; the company has acknowledged this. The government issued a restoration order, and an official assessment disclosed in January 2026 found continuing contamination upstream and in Kalusale soils.
• Disputed or unresolvedThe volume released; the cause of the failure; the full extent of health effects; whether compensation is adequate and reaches all affected households; and whether the clean-up deadline of 30 June 2026 was met.
• Outside AMAP’s roleDetermining liability or the compensation owed. These questions are before the High Court and the Supreme Court.

What would help clarify: publication of the official assessment report and ZEMA’s verification findings, the company’s quarterly clean-up reports, water-quality monitoring data, health screening results, and the list of households compensated.

Published reports

• 15 Jul 2026 · News DiggersClean-up
  We’ll audit Sino Metals contamination clean-up – ZEMA Reports: ZEMA said it had received Sino-Metals’ June 2026 progress report on the clean-up, which was under review, and would carry out a site verification inspection. Coverage: ZEMA’s statement; the outcome of the inspection is not yet published.
• 2 Jun 2026 · MakanDayCourt
  Chinese mining firm faces Supreme Court test over Zambia toxic spill Reports: Sino-Metals appealed to the Supreme Court (Appeal No. 8/2026) against the High Court’s November 2025 refusal to strike out the residents’ petition; the hearing was set for 3 June 2026. Coverage: the appeal before the hearing; no outcome has been published.
• 24 Mar 2026 · News DiggersClean-up
  Sino Metals begins clean-up and remediation work Reports: Sino-Metals said it had formally begun clean-up and remediation under ZEMA’s amended Environmental Restoration Order, which requires completion by 30 June 2026. Coverage: the company’s announcement.
• 13 Mar 2026 · The GuardianCommunity impact
  Communities report ongoing pollution and crop failure a year after the tailings leak Reports: residents along the river say soil and water remain contaminated, crops fail and fish have largely gone; the spill cut drinking water for about 500,000 people in Kitwe. Sino-Metals did not respond to a request for comment. Coverage: residents’ accounts; summarised by the Business & Human Rights Resource Centre.
• 20 Jan 2026 · ADFOfficial findings
  Chinese mining pollution tests Zambia’s resolve Reports: at ZEMA’s public disclosure meeting on 6 January 2026, experts reported that surface waters were returning to normal, but that cadmium, cobalt, copper, manganese and zinc remained high upstream near Chambishi and Kalulushi, and that some Kalusale soils were highly contaminated; relocation of Kalusale farmers was recommended. Coverage: a report of the findings presented; the assessment report itself is not published online.
• 22 Sep 2025 · Inside Climate NewsCompany position
  Chinese mining firm downplays toxic waste spill as residents reel from impacts Reports: CNMC attributed the failure to theft and damage to the dam liner and heavy rain, called the residents’ lawsuit unfounded, and said Sino-Metals had fulfilled its remediation obligations. Interim payments of about US$150 to US$850 were made; the government identified 449 affected farmers. Coverage: the company’s and petitioners’ positions.
• 16 Sep 2025 · Southern Africa Litigation CentreCourt
  Zambian communities sue mining giants over spill disaster Reports: 176 residents of Kalusale, Chambishi, filed a constitutional petition (2025/HP/1285) against Sino-Metals and NFC Africa Mining, seeking clean water, medical care, compensation, an independently monitored remediation plan and an escrow fund. Coverage: the petitioners’ claims, as described by the organisation supporting the case.
• 11 Sep 2025 · Human Rights WatchHealth
  Zambia: Acid spill jeopardizes residents’ health Reports: cites a Finnish advisory that water samples contained 24 heavy metals, 16 above WHO thresholds, and calls for testing of residents for heavy-metal exposure. Notes the government’s position that pH has normalised and metal levels are falling, and that it ordered compensation for more than 500 farmers. Coverage: HRW’s research and recommendations.
• 1 Sep 2025 · APVolume disputed
  A Chinese mining company is accused of covering up the extent of a major toxic spill Reports: Drizit, a contractor hired to assess the spill, estimated that 1.5 million tons of material was released, at least 30 times the company’s figure, and reported cyanide, arsenic and other metals; Sino-Metals ended its contract, citing contractual breaches, and disputes the findings. Coverage: Drizit’s unpublished findings, which are the subject of litigation between Drizit and the company.
• 7 Aug 2025 · Lusaka TimesGovernment position
  There’s no cause for alarm over Kitwe water contamination – Mweetwa Reports: the government spokesperson said no deaths or acute heavy-metal poisoning had been reported, and the water minister said Kitwe’s water met WHO standards. Coverage: the government’s statement.
• 6 Aug 2025 · US Embassy LusakaHealth advisory
  Health alert: travel restrictions after toxic mine spill Reports: the US government reassigned personnel and restricted travel in Chambishi, along the Chambishi Stream and Mwambashi River to the Kafue, and in Kitwe, warning that contaminants may become airborne. Coverage: a foreign government’s travel advisory.
• 15 Mar 2025 · APThe incident
  A river ‘died’ overnight in Zambia after an acidic waste spill at a Chinese-owned mine Reports: about 50 million litres of acidic waste entered a stream linked to the Kafue River on 18 February; pollution was detected at least 100 km downstream and Kitwe’s water supply was cut. Sino-Metals’ chairman said the company would ‘go all out to restore the affected environment’. Coverage: the incident and the company’s initial response.
• 24 Feb 2025 · Zambia MonitorOfficial order
  Zambia orders Sino Metals to cease operations after dam breach pollutes rivers Reports: the Minister of Green Economy and Environment ordered operations halted at three tailings dams, repairs, safe drinking water for communities, lime dosing, independent monitoring and a biodiversity assessment. Coverage: the restoration order as announced.