Where does Morrisville’s water come from?

Morrisville is served by the Town of Cary’s utility system, which draws from Jordan Lake and also supplies Cary, Apex, Raleigh-Durham International Airport and the Wake County portion of Research Triangle Park. This is worth knowing, because Morrisville’s water is not the same as Raleigh’s. Raleigh and Garner take water from Falls Lake on the Neuse. Cary’s system takes it from Jordan Lake on the Haw. Different reservoir, different watershed, different contaminant profile — and the published numbers reflect that.

Is Morrisville water harder than Raleigh water?

The bigger difference between the two systems is chemical. Morrisville's supply comes from Jordan Lake rather than Falls Lake, and disinfection byproducts run measurably higher on the Cary system, with trihalomethanes at 38.2 ppb versus Raleigh's 21.7 ppb in EWG's data. Hardness varies by home on both systems, so test your own tap. If you moved to Morrisville from Raleigh and noticed a stronger chlorine taste, that is not your imagination.

What about 1,4-dioxane in Jordan Lake?

It is a real and documented concern in the Haw River watershed that feeds Jordan Lake, and it is one of the reasons we specify differently for Cary-system homes than for Falls Lake homes. 1,4-dioxane is difficult to remove — it is not well captured by standard carbon filtration, which is exactly why it matters that someone specifying your system knows which reservoir you are on. We cover the detail on our Triangle 1,4-dioxane resource page, and any recommendation for a Morrisville home starts with testing your actual water.

Morrisville, NC

Water Filtration & Water Softeners in Morrisville, NC

Morrisville buys its water from the Town of Cary, which draws from Jordan Lake. That matters, because Jordan Lake water carries a different contaminant profile than Falls Lake does a few miles east.

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Verified utility data

What the data shows for Morrisville

Served by: Town of Cary Utilities

Source water: Jordan Lake

Hardness

Varies

Varies by home. We measure yours before recommending a softener.

Haloacetic Acids (HAA9)

27.5 ppb

Against an EWG health guideline of 0.06 ppb — higher than Raleigh’s.

Total Trihalomethanes

38.2 ppb

Federal limit 80 ppb. Nearly double Raleigh’s level.

Source: Morrisville is served by the Town of Cary’s utility system, which also serves Cary, Apex, RDU and the Wake County portion of RTP. Figures are the Cary system values from the EWG Tap Water Database.

Jordan Lake is not Falls Lake, and the numbers show it

Morrisville, Cary and Apex all sit on the same Town of Cary system, drawing from Jordan Lake. Raleigh and Garner draw from Falls Lake. People assume Triangle water is Triangle water, but the two reservoirs produce measurably different results.

Disinfection byproducts run higher on the Cary system than on Raleigh’s — trihalomethanes at 38.2 ppb against Raleigh’s 21.7, and haloacetic acids at 27.5 against 19.9. Both are legal and both are safe by federal standards. They are also the compounds most people notice in taste and in the shower.

Jordan Lake also carries 1,4-dioxane, an industrial contaminant that has turned up in the watershed upstream. It is the reason we treat Cary-system homes a little differently than Falls Lake homes.

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