TABLE 1.

Decay rates for fecal coliforms and Enterococcus spp. from various sources in fresh water and saltwater mesocosms

Water typeLocationDecay rate froma:Overall decay rate
Dog fecesWastewaterSoil inoculum
FCENTFCENTFCENTFCENT
FreshWater−0.37−1.49−0.27−0.31−0.08−0.39−0.24−0.73
Sediment−0.03−0.29−0.03−0.21−0.02−0.16−0.02−0.22
SaltWater−3.8≤−4.2b−4.2−1.05−0.83−0.99−2.9≤−2.1b
Sediment−0.65−3.1−3.1−0.22−0.28−0.01−1.3−1.1
  • a Decay rates are calculated as log10 (CFU 100 ml−1) per day (for water columns) and log10 (CFU 100 g−1) per day (for sediments).

  • b Decay rate estimated; see Materials and Methods.