@tlacoyodefrijol Hi there Oscar! Nice to e-meet. I'm a colleague of Livar's here at Difi, and I was hoping we would be able to have one final round for the water quality indicator? Please note that the description of this indicator in the methodology section on the website differs from your statement above. I.e. the methodology states: "For two categories - water quality and draft legislation we have lowered the bar by making some characteristics optional."
I have reviewed the data set from Mattilsynet and all indicators except TDS are there from 2008-2016 as you comment above. Further, on the website where the data sets are available, they have added instructions and explanations for each data indicator, so it should be rather straightforward.
May I ask why TDS is the only indicator? In Norway it's common to measure TOC, and I understand this to be the key indicator for water quality, not TDS (which is commonly used for e.g. hobbyist).
I think it would be a shame to be disqualified when we actually do have extensive datasets dating from 2008, on numerous indicators for water quality from all water works and sources above the minimum threshold.
Greetings from Rie Aleksandra