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Table 1

Correlation coefficient between the different physicochemical and microbiological parameters

pHConductivityTurbidityAmmoniaNitriteNitrateCuFeAlTotal bacterial countAOBTotal coliformTotal algal countWQI
pH −0.281 −0.271 −0.1 −0.266 −0.227 −0.068 0.132 0.233 −0.278 0.235 −0.318* −0.289 0.145 
Conductivity −0.281 0.733** 0.731** 0.700** 0.738** 0.175 −0.382* −0.504** 0.753** 0.609** 0.759** 0.755** −0.824** 
Turbidity −0.271 0.733** 0.731** 0.866** 0.871** −0.108 −0.381* −0.575** 0.899** 0.714** 0.855** 0.905** −0.890** 
Ammonia −0.1 0.731** 0.731** 0.717** 0.882** −0.126 −0.284 −0.371* 0.764** 0.604** 0.791** 0.839** −0.829** 
Nitrite −0.266 0.700** 0.866** 0.717** 0.868** −0.144 −0.295 −0.551** 0.770** 0.596** 0.781** 0.812** −0.837** 
Nitrate −0.227 0.738** 0.871** 0.882** 0.868** −0.139 −0.277 −0.432** 0.813** 0.626** 0.858** 0.873** −0.877** 
Cu −0.068 0.175 −0.108 −0.126 −0.144 −0.139 0.009 0.001 0.035 −0.04 0.121 −0.107 0.072 
Fe 0.132 −0.382* −0.381* −0.284 −0.295 −0.277 0.009 0.637** −0.325* −0.217 −0.305* −0.368* 0.305* 
Al 0.233 −0.504** −0.575** −0.371* −0.551** −0.432** 0.001 0.637** −0.403** −0.275 −0.394** −0.450** 0.453** 
TBC −0.278 0.753** 0.899** 0.764** 0.770** 0.813** 0.035 −0.325* −0.403** 0.708** 0.935** 0.920** −0.873** 
AOB 0.235 0.609** 0.714** 0.604** 0.596** 0.626** −0.04 −0.217 −0.275 0.708** 0.630** 0.659** −0.778** 
TC −0.318* 0.759** 0.855** 0.791** 0.781** 0.858** 0.121 −0.305* −0.394** 0.935** 0.630** 0.909** −0.843** 
TAC −0.289 0.755** 0.905** 0.839** 0.812** 0.873** −0.107 −0.368* −0.450** 0.920** 0.659** 0.909** −0.858** 
WQI 0.145 −0.824** −0.890** −0.829** −0.837** −0.877** 0.072 0.305* 0.453** −0.873** −0.778** −0.843** −0.858** 
pHConductivityTurbidityAmmoniaNitriteNitrateCuFeAlTotal bacterial countAOBTotal coliformTotal algal countWQI
pH −0.281 −0.271 −0.1 −0.266 −0.227 −0.068 0.132 0.233 −0.278 0.235 −0.318* −0.289 0.145 
Conductivity −0.281 0.733** 0.731** 0.700** 0.738** 0.175 −0.382* −0.504** 0.753** 0.609** 0.759** 0.755** −0.824** 
Turbidity −0.271 0.733** 0.731** 0.866** 0.871** −0.108 −0.381* −0.575** 0.899** 0.714** 0.855** 0.905** −0.890** 
Ammonia −0.1 0.731** 0.731** 0.717** 0.882** −0.126 −0.284 −0.371* 0.764** 0.604** 0.791** 0.839** −0.829** 
Nitrite −0.266 0.700** 0.866** 0.717** 0.868** −0.144 −0.295 −0.551** 0.770** 0.596** 0.781** 0.812** −0.837** 
Nitrate −0.227 0.738** 0.871** 0.882** 0.868** −0.139 −0.277 −0.432** 0.813** 0.626** 0.858** 0.873** −0.877** 
Cu −0.068 0.175 −0.108 −0.126 −0.144 −0.139 0.009 0.001 0.035 −0.04 0.121 −0.107 0.072 
Fe 0.132 −0.382* −0.381* −0.284 −0.295 −0.277 0.009 0.637** −0.325* −0.217 −0.305* −0.368* 0.305* 
Al 0.233 −0.504** −0.575** −0.371* −0.551** −0.432** 0.001 0.637** −0.403** −0.275 −0.394** −0.450** 0.453** 
TBC −0.278 0.753** 0.899** 0.764** 0.770** 0.813** 0.035 −0.325* −0.403** 0.708** 0.935** 0.920** −0.873** 
AOB 0.235 0.609** 0.714** 0.604** 0.596** 0.626** −0.04 −0.217 −0.275 0.708** 0.630** 0.659** −0.778** 
TC −0.318* 0.759** 0.855** 0.791** 0.781** 0.858** 0.121 −0.305* −0.394** 0.935** 0.630** 0.909** −0.843** 
TAC −0.289 0.755** 0.905** 0.839** 0.812** 0.873** −0.107 −0.368* −0.450** 0.920** 0.659** 0.909** −0.858** 
WQI 0.145 −0.824** −0.890** −0.829** −0.837** −0.877** 0.072 0.305* 0.453** −0.873** −0.778** −0.843** −0.858** 

TBC, total bacterial count; TC, total coliform; TAC, total algal count.

*Correlation is significant at the 0.05 level.

**Correlation is significant at the 0.01 level.

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