![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhHKPI5HlQVcdRSTtCNWMmguCqiopI49uNTziBSJuwviipNXW7IryMj5oLYX20Sl8xbJkJJ6JFzz_uDca0SjfIODVNA12Crdd-l1wySNkN3RQBcKBiPam_EVbg30_5nxt1EPo_EU8grmZNg/s400/Picture2.png)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjsWu95-F68RiUl4Z_mmXjY0CK0ocMofH4865Smu2GeHLbNj_f__bzI45ETZ050hYX_hEULWH1wtwjYq6bu4ihjiootyaTW0G1DHaSoVQwbPZkpSuqATyCPU1f749kcMqpWfRRTVT2qPkII/s400/Picture1.png)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEge9dPsqtR-Eipr8rkVV3ob8QiqsUZXpxwK49uuISLxrMluLUtfet_HVq5JcB5PsHNP3a17n0qW-fgE6nQTCvL8jYnY648IY_LyqdPCtyIz92bRxWz1nZLVbfMM_RQRDvlM_t2t5HSJ6qlM/s400/Picture3.png)
PH, quite constant except for tap water
What is the main cause of this?
The optimum PH level required for the healthy growth of plants is PH 6-7, which is seen in the case of CS1 all the way to the pond. As for Why the GT has a PH of 6.64, this is because of the usage of soap and detergent which are alkalis. As for the tap water with the PH 7.47 , limestone deposits contribute greatly to the alkali levels.
TDS Highest TDS observed in GT due to the presence of grease, oil, cosmetics.
Why the gradual increase from CS4 to Pond? It is highly possible that its due to the fast motion of the flowing water from the outlet to the pond, the solids get dissolved easier.
Why the sudden increase at tap water? As Tap Water is filtered, thus this greatly decreases the TDS content in the water.