The correlation between income and water use was analyzed at the census block groups level for a study area. The Pearson's correlation coefficient was 0.36 (r=0.36) with p<0.01. The normality of income was also checked with Kolmogorov-Smirnov test and the test result is significant at p<0.05. Which of the following statements is TRUE:

1. There is a significant linear relationship between water use and income because r<0.5.
2. The normality test shows that income follows a normal distribution.
3. The significant result of the normality test suggests that the significance test on the Pearson's correlation coefficient is not trustworthy.
4. If the data are aggregated to the census tract level, the correlation coefficient between income and water use will still be 0.36.