Phosphate in tap water

[Colin_T]

Rain either soaks the nutrients into the ground water or washes it into rivers. It depends on where your drinking water comes from. Regardless of this, you don't want to be ingesting anything dissolved in water so a reverse osmosis unit might be useful for your drinking water. At the very least, filter it through carbon

 

[Joe80]

My tap water does come from rivers and streams according to the water company. Had lots of rain recently, so makes sense that readings are high at the moment.