Cary water runs about 7–9 GPG. That is hard enough to leave scale on fixtures, spot glassware, and shorten the life of water heaters and dishwashers.

What is Cary water treated with?

Cary's supply comes from Jordan Lake and is disinfected with chlorine. Free chlorine is comparatively easy to remove with quality carbon filtration.

Where do these Cary water figures come from?

The EWG Tap Water Database, which compiles the utility's own state-reported testing results.

EWG Tap Water Database

Contaminants detected in Cary tap water
Contaminant	Detected	Health guideline	Legal limit	Over guideline
Haloacetic Acids (HAA9) Disinfection ByproductNine chlorination byproducts with no federal limit; linked to cancer and reproductive harm.	27.5 ppb	0.06 ppb	No legal limit	458×
Total Trihalomethanes Disinfection ByproductCollectively linked to bladder cancer and reproductive harm.	38.2 ppb	0.15 ppb	80 ppb	255×
Dibromoacetic Acid Disinfection ByproductHAA byproduct linked to cancer risk and fetal development effects.	3.00 ppb	0.03 ppb	No legal limit	100×
PFOA (Forever Chemical) PFASLinked to kidney cancer, thyroid disease, and cardiovascular harm; does not break down.	2.86 ppt	0.09 ppt	4 ppt (proposed)	32×
PFOS (Forever Chemical) PFASPersistent forever chemical associated with cardiovascular disease and fetal development harm.	3.79 ppt	0.3 ppt	4 ppt (proposed)	13×

Is Cary water hard?: Cary water runs about 7–9 GPG. That is hard enough to leave scale on fixtures, spot glassware, and shorten the life of water heaters and dishwashers.
What is Cary water treated with?: Cary's supply comes from Jordan Lake and is disinfected with chlorine. Free chlorine is comparatively easy to remove with quality carbon filtration.
Where do these Cary water figures come from?: The EWG Tap Water Database, which compiles the utility's own state-reported testing results.

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