In my case, I have 197 mg CaCO3/L = 11 dKH.
Your water report has T-alkalinity (=total alkalinity, expressed as CaCO3)
Keep in mind the KH test doesn't tell you how much calcium you have. It just measures carbonate ions which can be from calcium carbonate, magnesium carbonate, potassium bicarbonate, or sodium Bicarbonate. Your water report shows you have Ca, Mg, sodium and potassium in your water. Since the KH test cannot identify the source of the carbonate, the value is "expressed as" or is equivalent to 197mg of calcium carbonate dissolved in water.
The same applies to GH it detects calcium, magnesium, beryllium, strontium, and barium. beryllium, strontium, and barium are typically present in tap water but at very low levels. Since the GH test cannot distinguish between these elements the value is again expressed as a calcium equivalent value.
Your actual calcium value is 41mg/L and your magnesium level is 22mg/L. You do not have 197mg of calcium in your water. You have a 2 to 1 ratio of calcium to magnesium which is great by itself for plants.
Also note that if your carbonate was strictly from calcium and magnesium carbonate your PH would be very close to 7. However your water report shows you have an elevated level of sodium, 104mg/L. Most of the sodium is apparently present as bicarbonate in your water and that can easily push the PH up to 8. Your water utility is probably adding sodium bicarbonate to your water to keep your PH high to minimize water pipe corrosion.
The main issue I see it that the high PH will make it hard to keep iron dissolved in the water. At a PH of 8 it will precipitate out and settle into your substrate and may not be readily available to your plants. You can use the previously mentioned water softening device to lower the mineral content and PH of your water. However keep in mind it will also reduce calcium and magnesium levels. If you reduce Ca and Mg levels too much you will need to add some to your water.