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Steed Pond:
E. coli Monitoring 2019

Update August 8, 2019

Samples collected by the Davis County Health Department (DCHD) on the north side of Steed Pond on July 30, 2019, showed E. coli levels above the maximum water quality standard.

Utah uses the Most Probable Number (MPN) method to estimate the concentration of E. coli in a water sample. The presence of a high number of indicator organisms such as E. coli signals a higher probability of pathogens in the water. The threshold of 409 MPN of bacterial density per 100 milliliters (mL) of water relates to a risk factor of 8 illnesses per 1,000 swimmers. As the value of the MPN increases above 409 MPN, the risk of illness if exposed to contaminated waters also increases.

E. coli concentrations from the July 30, 2019, sample were 920.8 MPN per 100/mL.

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