What is the consequence of having total coliform levels exceeding regulatory limits?

Having total coliform levels exceed regulatory limits indicates potential contamination in the water supply, suggesting the presence of harmful bacteria. Coliform bacteria, which includes E. coli among others, are often used as indicators of water quality and sanitation. Their presence raises significant health concerns because it implies that other pathogenic organisms may also be present, increasing the likelihood of waterborne diseases.

When total coliform levels are high, it indicates that the water may support the growth of bacteria that can cause gastrointestinal illnesses, infections, and other health issues if ingested. This is why exceeding regulatory limits is taken very seriously in public health and safety contexts, as it directly relates to the increased risk of bacterial infection for those consuming the contaminated water.

The other options do not directly relate to the specific consequences of high total coliform levels. Skin irritation is typically associated with chemical exposures rather than bacterial contamination, and while increased cardiac risk and neurological issues may stem from other water quality problems, they are not directly caused by coliform bacteria presence or hint at the immediate risks associated with bacterial infections.