Episode one sees the workers of United Utilities face the effects of Britain's hottest summer in seven years. As temperatures rise so do the often smelly and revolting jobs that customer service technicians Adrian and Wes have to handle. It takes a strong stomach to do what these boys do and as long people continue to flush wet wipes and nappies there will always be a drain to unblock. However, it's the out of town reservoirs, where sun seekers put their lives at risk by not paying attention to warning signs, that are one of the biggest worry during the heat wave; and we see the devastating impact that death can have on the team charged with patrolling the area.
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