Site	Sample location	Concentration levels (ppm)
Site	Sample location		K⁺	Ca²⁺	Na⁺	Mg²⁺	Pb²⁺
R1	Raquette River, upriver from Tupper Lake, at the Crusher	<0.05	<0.03	47	85	0.79	---
R2	Pre-WWT in Tupper Lake	11	0.7	254	2.5	0.25	---
R3	Post-WWT in Tupper Lake	---	0.62	364	47	0.52	---
R4	Carry Falls Reservoir	<0.05	<0.03	52	80	0.85	---
R5	South Colton Reservoir	<0.05	<0.03	144	122	0.97	---
R6	Pre-WWT in Potsdam	---	0.034	301	112	1.5	---
R7	Post-WWT in Potsdam	---	<0.03	357	154	1.8	---
T1	Tap water, village of Tupper Lake	<0.05	<0.03	50	63	0.21	---
T2	Tap water, Mt. Morris area in Tupper Lake	0.054	<0.03	73	19	0.51	---
T3	Tap water, SUNY Potsdam	<0.05	---	186	19	0.74	---
T4	Tap water, SLU in Canton	---	---	0.83	282	29	---
T5	Tap water, village of Canton	---	<0.03	3.6	260	88	---
W1	Well water, Town of Potsdam	---	---	755	<0.5	---	---
W2	Well water, Town of Canton	---	---	353	281	3.1	---
W3	Well water, Winthrop	---	---	1.8	315	221	---