The February 22, 2019 issue of the CDC’s Morbidity and Morftality Weekly Report had a study about a Campylobacter outbreak in 2017 that was associated with the municipal water supply in Nebraska. At least 39 people were sickened after they drank untreated city water. The city was not named, just called “City A.”
Apparently, a center pivot irrigation system, that was supposed to pump livestock waste into farmland malfunctioned. Runoff collected in a road ditch near two wells that fed the water supply.
There were 33 probable and 6 confirmed cases in this outbreak. Untreated unboiled city A tap water was the only exposure that was significantly associated with illness.
The city is served by four untreated wells and an interconnected distribution system. After the wells were removed from service, no further illnesses were reported.