Arkansas Water Hardness map


Water Quality in the State of Arkansas

Arkansas water supply comes mainly from groundwater (aquifers and wells), surface water, rivers, reservoirs and lakes. Lake Winona and Lake Maumelle are the main water sources for the city of Little Rock. The average water hardness in Arkansas is 38 PPM which would be considered soft

Water Hardness by City

Arkansas has one of the lowest averages for hard water in the country at 38 PPM, according to the USGS water hardness measures, Some examples of soft water cities are Little Rock with 26 PPM and Fayetteville with a hardness level of 27 PPM. The hardest water level in the state comes from Pine Bluff, which gets its water from 4 wells that pump from the Sparta Sand Aquifer. The total hardness of this water is 86 Parts Per Million which is considered moderately hard.

For more information on the water hardness in specific cities please see the table below.

City and Zip CodesWater Hardness Data


72701 | 72703 | 72704

27 PPM (mg/L) or 1 gpg

Fort Smith

72903 | 72904 | 72901 | 72908 | 72916

21 PPM (mg/L) or 1 gpg

Little Rock

72201 | 72202 | 72204 | 72205 | 72206 | 72207 | 72209 | 72210 | 72211 | 72212 | 72223 | 72227

26 PPM (mg/L) or 1 gpg

Pine Bluff

71603 | 71601 | 72566

86 PPM (mg/L) or 5 gpg


72762 | 72764 | 72157

29 PPM (mg/L) or 2 gpg Protection Status

PPM = Parts Per Million

mg/L = Milligrams Per Liter

gpg = Grains Per Gallon

Farming and Water Hardness

Agriculture is Arkansas’ largest industry, producing 16 billion in revenue annually. The state’s major agricultural products are rice, cotton, poultry, soybeans and feed grains. Arkansas is the largest rice producer and the 3rd largest cotton producer in the United States. The state has just under 19 million acres of forest land and more than 95% of Arkansas' land resources are used for agriculture and forestry.

Though Arkansas has relatively soft water, farmers can discover that they still experience headaches related to scale buildup on their irrigators and other necessary equipment due to the mass quantities of water flow every day. In addition, contaminants polluting soil and waterways have increased greatly over the past few decades and there is a greater need for waste and chemical control. Many farmers are looking for eco-friendly solutions that can increase the quality and yield of their crops while saving water. Read more about how HydroFLOW can increase crop yield.

Solutions to your Water Quality Problems

Fixing your water quality issues in the state of Arkansas will depend on your specific water source. It is best to test your potable water supply in order to get a better understanding of your water quality. Testing is relatively cheap. The test results will allow you to understand if your potable water has issues that need to be addressed. Common solutions to water contamination problems may include a water filtration system, a reverse osmosis system or other whole home water treatment solutions.

A problem that some Arkansas residents will have to deal with is hard water. One old-fashioned, inefficient, expensive, and unhealthy method to treat hard water is with a salt-based water softener. Most people don’t realize that if you’re using a water softener, you are basically removing calcium and magnesium from your drinking water and adding salt to your diet. In addition, many states are banning the use of salt-based water softeners.

Alternative water treatment solutions such as “water conditioners” have been gaining popularity in recent years because they are cheap to operate and the best eco-friendly solution for hard water. Hydropath technology, which powers the HydroFLOW water conditioners, is by far the most efficient and cost-effective eco-friendly solution to deal with hard water problems. To learn more about how HydroFLOW solves the problems created by hard water, please check out our technology page. You might want to read this blog that explains the difference between water conditioners and water softeners: Water Conditioner vs. Water Softener Blog.