ZIP Code 37023
Stewart County, Tennessee — Big Rock
What This Means
Stewart County, Tennessee has moderately hard water, estimated at 117.6 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 | 37023 |
| County | Stewart |
| City | Big Rock |
| State | Tennessee (TN) |
| Hardness (PPM) | 117.6 mg/L — Moderately Hard |
| Hardness (GPG) | 6.9 grains/gallon |
| Classification | 61 - 120 mg/L |
Source: USGS Water Quality Portal, county-level median
USGS Monitoring Data
| Monitoring Stations | 15 |
| Range | 0.1 – 288 mg/L |
| Most Recent Data | 2023 |
| Data Quality | Measured |
Source: USGS Water Quality Portal
Effects at 117.6 PPM Hardness
At 117.6 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 Big Rock Water Safe to Drink?
Yes. Hard water at 117.6 ppm in Big Rock 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
Big Rock water at 117.6 ppm is 18% harder 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 117.6 PPM Water
Consider a shower filter ($15–40) for skin and hair benefits. At 117.6 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.
Stewart County Water Hardness Map
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Frequently Asked Questions
What is the water hardness for ZIP code 37023?
ZIP code 37023 is in Stewart County, Tennessee, with estimated water hardness of 117.6 mg/L (6.9 GPG), classified as moderately hard.
Do I need a water softener in 37023?
With moderately hard water at 117.6 PPM, a water softener is optional. You may notice some minor scale buildup over time.
What county is ZIP code 37023 in?
ZIP code 37023 is in Stewart County, Tennessee (TN).
Is Big Rock water hard or soft?
Big Rock water is classified as moderately hard with an estimated hardness of 117.6 ppm (6.9 GPG). This is moderately hard — some minor mineral effects may be noticeable.
Is hard water in 37023 safe to drink?
Yes, hard water in ZIP code 37023 at 117.6 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 117.6 PPM water damage my appliances?
At 117.6 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 Stewart County?
Stewart County has moderately hard water at 117.6 ppm. A softener is optional but can help if you notice dry skin or minor scale.
Is Big Rock water OK for aquariums and plants?
Generally yes. At 117.6 ppm, most freshwater fish and plants will do fine. Check species-specific requirements for sensitive fish.