Water attributes were analyzed onsite or in laboratory after analysis of samples.
South West Water attributed its position to the upgrades made to the distribution network since the 1976 drought, the transformation of two china clay pits into reservoirs, and action on leakage.
The results show that gas recovery can be improved significantly by the injection of warm water, attributed to the increase of the temperature in the hydrate-bearing sediment.
A significant impact on the degradation rate of the sweetener was observed: degradation rate decreases in the order distilled water > river water > lake water, attributed to the increased natural organic matter content of the respective natural water samples.
Saturated hydraulic conductivity (Ks) increased linearly with level of contamination (p < 0.05; r2 ≈ 0.8), indicating that rapid flow of water attributed to a reduction of the dielectric constant, and hence water soil matrix interactions.
Concerning water attributes: (1) almost all attributes presented values better than the limiting values stipulated by Brazilian legislation; (2) the watersheds did not present significant differences of most of the attributes; (3) in the criteria climatic season data showed some significant differences.
Such percentage increases in the simple models both CLM and MLM indicates the households WTP over the current water tariff for varying water attributes parameter.
The marginal rates of substitution of the tap water attributes for each level, in the simple models of CLM and MLM were translated as percentage increase over the current water bills, which the households are willing to pay for the improvement in their varying tap water attributes.
MLM was developed to relax the assumptions of IIA pertinent to CLM, and to account for the heterogeneous preferences of the respondents for their demand of tap water attributes, unlike CLM which claimed respondents have fixed or homogeneous preferences of tap water attributes.
Relatively higher EC values were recorded in the Mallathahalli Lake water, attributed to the high degree of anthropogenic activities such as waste disposal, sewage inflow and agricultural runoff (Pandit 2002).
