Texas Hill Country Ground Water | The Hard Truth About Hard Water

Posted by on Tuesday, September 18th, 2018 at 3:13pm.

Many farms and ranches in Texas Hill Country rely on groundwater that is extracted from beneath the limestone and granite landscape. This resource is responsible for much of what is great about the region but also brings its own challenges and concerns. For one, the quality of your water may influence the production and taste of your favorite at-home beverages, like coffee. 

Read on for more information about hard water in Texas, specifically the Central Hill Country region, and what to do about it.

What is "Hard" Water? 

The phrase "hard water" refers to water that has relatively high mineral content. Water that is extracted from the ground tends to be hard because it takes on minerals from its geological surroundings. Trace minerals found in hard water include calcium, magnesium carbonates, and iron. 

Hard water can be beneficial because it provides trace nutrients that we all need, but it can also damage things like pipes or faucets over time, and cause an unsightly buildup of limescale. Hard water can even dull and damage clothes over time, and result in dry or itchy skin.

In short, soft water is best for cleaning, while hard water is good for drinking. 

Signs that you have hard water:

  • Lack of foam when lathering with soap.
  • A sticky residue after using soap.
  • A build-up of limescale in kettles, cups, and faucets.
  • Your water comes from in-ground sources, like aquifers.

Texas as a whole, and especially the Hill Country region, are known for their hard water. 

Texas Ground Water - History & Challenges

Hard Water Residue in two drinking glasses comparison

In an earlier post, we took a ten thousand foot look at the geological history of the Texas Hill Country and its groundwater. Specifically, how the flow of the groundwater through the Karst bedrock was disrupted by the formation of the Balcones Escarpment, causing said water to carve out the hill country in relief as it created the iconic rivers and springs of the region.

It’s these same waters, infused with the minerals that are leached from the Karst limestone, that present challenges to home and ranch owners in the Texas Hill Country.

Across the board, this “hard water” can create problems for plumbing systems and appliances (such as my S-27 espresso machine) in the form of limescale that clogs plumbing and helps give soap scum its epoxy-like tenacity. It can wreck water heaters, calcify irons, and turn a great espresso machine into a sputtering, leaking, mineral-crusted pain in the kitchen.

Water Treatment in Texas Hill Country

Obviously, for folks contemplating a ranch or home purchase in the Texas hill country, it is a great idea to ask about its water softening appliances at the properties under consideration, if any; and to check about homeowner's experience with water in the specific area of the home or ranch.

Water Softening Equipment

Water treatment is a thriving industry in the Texas hill country, so finding professionals to improve water quality is rarely difficult. Usually, an over-the-counter water softener system is all that the property will require.

Here’s the upside though: the treatment for minerals and subsequent filtering often produces terrific drinking water and by extension, a fantastic espresso shot.

Water Softening vs Water Conditioning

When searching for a solution to hard water, you will probably come by the words "softening" and "conditioning". These refer to two different processes for treating hard water, each with its own pros and cons. 

Water Softening:

  • Uses sodium or potassium to remove hardening minerals from water.
  • Usually increases the amount of sodium present in water.
  • Require ongoing maintenance.

Water Conditioning:

  • Alters hardening minerals to mitigate scale build-up.
  • Removes some other chemicals (like chlorine) as well. 
  • Effectiveness is mitigated by the presence of iron or magnesium.
  • Can clean pre-existing scale buildup.
  • Requires less maintenance.
  • Retains some of the drawbacks of hard water, like lower cleaning efficiency.

While you may have a preference between these two systems, keep in mind that the relatively high magnesium and iron content in most groundwater could make water conditioning ineffective.

Hard Water: An Ounce of Prevention

While most households in America have some degree of hard water, relatively few make use of any water softening measures.

This lack of attention results in money lost to damaged appliances and reduced efficiency of water heating systems. As with most things, a little prevention can save you money and headaches in the future, so be sure to look into hard water treatment for your Texas Hill Country ranch or home. 

In the meantime, make sure to clean your coffee machine out with some vinegar. You'll thank me later.

And if you're looking for more information on water sources, availability, and uses in the Texas Hill Country, make sure to check out this article

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