Kan. Admin. Regs. § 28-15a-23
Each person that operates a public water supply system shall comply with the sampling and analytical requirements specified in 40 C.F.R. 141.23, as in effect on July 1, 2015 and hereby adopted by reference, with the addition of the following text, which shall be added at the beginning of 40 C.F.R. 141.23(c):
"Inorganic analysis for calcium, chloride, iron, magnesium, manganese, pH, potassium, silica, sodium, specific conductance, sulfate, total alkalinity, total dissolved solids, total hardness, and total phosphorus shall be required from each community water supply system with its own source of supply and from each non-transient, non-community water supply system with its own source of supply. Each person operating a groundwater system shall take one sample at each sampling point during each compliance period. Each person operating a surface water system (or combined surface water and groundwater system) shall take one sample annually at each sampling point."
Kan. Admin. Regs. § 28-15a-23