Qualla: Camelford water pollution incident

Camelford water pollution incident: Introduction

Sat, 23 May 2026 00:00:00 GMT

The relief driver had been told that once inside the gate, the aluminium sulphate tank was on the left. He was not familiar with Lowermoor Water Treatment Works on Bodmin Moor and the site was unmanned when he arrived on 6 July 1988. The key he had been given fitted almost every lock used by the South West Water Authority. After about twenty minutes of searching for the right tank, he tried the key on a manhole cover, it opened, and he believed he had found it. He had not. The twenty tonnes of aluminium sulphate he discharged went directly into the treated water reservoir that supplied 20,000 people in and around Camelford. The concentration of aluminium in the drinking water rose to 3,000 times the legal maximum. As the chemical reacted, several tonnes of sulphuric acid formed and travelled out through the pipes, stripping lead and copper from household plumbing on the way. What happened next is Britain's worst mass-poisoning event, and one of the most disturbing case studies in regulatory failure of the late 20th century.

Camelford water pollution incident: The Day and the Days That Followed

Sat, 23 May 2026 00:00:00 GMT

Within 48 hours, South West Water Authority knew aluminium sulphate was the likely cause. They did not tell the public. For sixteen days the authority insisted the water was safe. One customer who phoned to complain about the taste was told there had been some acidity but the wat...

Camelford water pollution incident: The Consultant in Camelford

Sat, 23 May 2026 00:00:00 GMT

Douglas Cross, a consultant biologist living locally, ran his own tests and found that the water contained far more than aluminium sulphate. The acidic liquid leaving the treatment works had corroded copper pipes and their soldered joints in homes across the affected area, pullin...

Camelford water pollution incident: Carol Cross

Sat, 23 May 2026 00:00:00 GMT

Carol Cross was 44 years old in July 1988, living within the affected area. In 2004 she died at 58 of an unusually early form of beta amyloid angiopathy, a cerebrovascular disease most often associated with Alzheimer's. Her autopsy showed 23 micrograms of aluminium per gram of br...

Camelford water pollution incident: The Long Argument Over Harm

Sat, 23 May 2026 00:00:00 GMT

Two reports drawn from a 1989 inquiry led by Dame Barbara Clayton concluded that there was no convincing evidence of harm. A 1991 follow-up acknowledged that the affair had caused real suffering but attributed many of the residents' symptoms to anxiety. The first Clayton report's...

Camelford water pollution incident: What the Records Say

Sat, 23 May 2026 00:00:00 GMT

In 1991 South West Water Authority was fined 10,000 pounds with 25,000 pounds in costs at Exeter Crown Court for supplying water likely to endanger public health. The authority paid at least 123,000 pounds to settle nearly 500 initial compensation claims. In 1997 a further 148 vi...