Table 6.

Summary of predicted orthophosphate loading based on the individual septic tank assessment

Distance to River Nar (m)Concentration (mg P l−1)Loading (kg a−1)
MinimumMaximumMinimumMaximum
314.554.890.5980.643
800.3081.240.0400.163
890.181.000.0240.131
1602.81E−030.2143.69E−040.028
2441.56E−050.03712.05E−064.87E−03
2491.18E−050.03351.55E−064.40E−03
2558.51E−060.02961.12E−063.89E−03
3906.22E−092.01E−038.17E−102.64E−04
454Negligible5.87E−04Negligible7.71E−05
491Negligible2.90E−04Negligible3.81E−05
501Negligible2.40E−04Negligible3.15E−05
508Negligible2.11E−04Negligible2.77E−05
537Negligible1.22E−04Negligible1.60E−05
745Negligible1.63E−06Negligible2.14E−07
848Negligible2.55E−06Negligible3.35E−08
866Negligible1.85E−07Negligible2.43E−08
902Negligible9.76E−08Negligible1.28E−08
918Negligible7.35E−08Negligible9.66E−09
924Negligible6.61E−08Negligible8.69E−09
956Negligible3.76E−08Negligible4.94E−09
958Negligible3.63E−08Negligible4.77E−09
967Negligible3.10E−08Negligible4.07E−09
978Negligible2.55E−08Negligible3.35E−09
1026Negligible1.10E−08Negligible1.45E−09
1154Negligible1.19E−09Negligible1.56E−10
1619NegligibleNegligibleNegligibleNegligible
2013NegligibleNegligibleNegligibleNegligible
2048NegligibleNegligibleNegligibleNegligible
2053NegligibleNegligibleNegligibleNegligible
2071NegligibleNegligibleNegligibleNegligible
2394NegligibleNegligibleNegligibleNegligible
2433NegligibleNegligibleNegligibleNegligible
2451NegligibleNegligibleNegligibleNegligible
2445NegligibleNegligibleNegligibleNegligible
Total0.6620.979