ZIP Code 72414
Craighead County, Arkansas — Black Oak
What This Means
Craighead County, Arkansas has moderately hard water, estimated at 74.6 mg/L (PPM). At this level, you may notice some mineral buildup on fixtures and inside appliances over time. A water softener is optional but can help extend appliance life. Most people don't notice significant issues at this hardness level.
What You Should Do
Hardness Details
| ZIP Code | 72414 |
| County | Craighead |
| City | Black Oak |
| State | Arkansas (AR) |
| Hardness (PPM) | 74.6 mg/L — Moderately Hard |
| Hardness (GPG) | 4.4 grains/gallon |
| Classification | 61 - 120 mg/L |
Source: USGS Water Quality Portal, county-level median
USGS Monitoring Data
| Monitoring Stations | 80 |
| Range | 2 – 708 mg/L |
| Most Recent Data | 2025 |
| Data Quality | Measured |
Source: USGS Water Quality Portal
Effects at 74.6 PPM Hardness
At 74.6 ppm, some minor effects are possible: slight soap scum on shower doors, occasional water spots on dishes and glassware. Sensitive skin may notice dryness after showers. Appliance efficiency is minimally affected, but you may see light mineral deposits on faucets over time.
Is Black Oak Water Safe to Drink?
Yes. Hard water at 74.6 ppm in Black Oak is safe to drink. The calcium and magnesium that make water hard are actually essential minerals your body needs daily. The World Health Organization confirms there are no health-based guidelines for water hardness.
At this level, taste is generally good. Most people will not notice a mineral flavor, and the water is perfectly suitable for drinking, cooking, and making coffee or tea.
Your Water vs National Average
Black Oak water at 74.6 ppm is 25% softer than the US average of approximately 100 ppm. This is close to the national average. While not urgently requiring treatment, monitoring for scale buildup is advisable.
Best Solution for 74.6 PPM Water
Consider a shower filter ($15–40) for skin and hair benefits. At 74.6 ppm, a KDF or vitamin C shower filter can reduce mineral contact during bathing. A whole-house salt-free conditioner ($300–800) is an optional but effective way to prevent minor scale buildup on fixtures and appliances without adding sodium to your water.
Craighead County Water Hardness Map
Soft Moderate Hard Very Hard
Check Another ZIP Code
Nearby ZIP Codes
Frequently Asked Questions
What is the water hardness for ZIP code 72414?
ZIP code 72414 is in Craighead County, Arkansas, with estimated water hardness of 74.6 mg/L (4.4 GPG), classified as moderately hard.
Do I need a water softener in 72414?
With moderately hard water at 74.6 PPM, a water softener is optional. You may notice some minor scale buildup over time.
What county is ZIP code 72414 in?
ZIP code 72414 is in Craighead County, Arkansas (AR).
Is Black Oak water hard or soft?
Black Oak water is classified as moderately hard with an estimated hardness of 74.6 ppm (4.4 GPG). This is moderately hard — some minor mineral effects may be noticeable.
Is hard water in 72414 safe to drink?
Yes, hard water in ZIP code 72414 at 74.6 ppm is safe to drink. The calcium and magnesium minerals are actually beneficial for your health. At this level, the water tastes normal and requires no filtration for drinking purposes.
Will 74.6 PPM water damage my appliances?
At 74.6 ppm (moderately hard), minor scale buildup is possible over many years but significant appliance damage is unlikely. Regular descaling maintenance is sufficient.
Do I need a water softener in Craighead County?
Craighead County has moderately hard water at 74.6 ppm. A softener is optional but can help if you notice dry skin or minor scale.
Is Black Oak water OK for aquariums and plants?
Generally yes. At 74.6 ppm, most freshwater fish and plants will do fine. Check species-specific requirements for sensitive fish.