ZIP Code 37144
Lincoln County, Tennessee — Petersburg
What This Means
Lincoln County, Tennessee has hard water, estimated at 158.5 mg/L (PPM). Hard water causes noticeable mineral scale on faucets, showerheads, and inside water heaters. You may notice spots on dishes, stiff laundry, and dry skin or hair. A water softener is recommended to protect your plumbing and appliances.
What You Should Do
Hardness Details
| ZIP Code | 37144 |
| County | Lincoln |
| City | Petersburg |
| State | Tennessee (TN) |
| Hardness (PPM) | 158.5 mg/L — Hard |
| Hardness (GPG) | 9.3 grains/gallon |
| Classification | 121 - 180 mg/L |
Source: USGS Water Quality Portal, county-level median
Your Water Utility
| Utility Name | PETERSBURG WATER SYSTEM |
| System ID | TN0000544 |
| Water Source | Surface water |
ⓘ Your utility may treat water before delivery, which can change hardness levels. Check your utility's annual Consumer Confidence Report (CCR) for exact hardness values.
USGS Monitoring Data
| Monitoring Stations | 51 |
| Range | 0.3 – 1300 mg/L |
| Most Recent Data | 2022 |
| Data Quality | Measured |
Source: USGS Water Quality Portal
Effects at 158.5 PPM Hardness
At 158.5 ppm, expect noticeable effects: soap scum buildup on fixtures and shower doors, cloudy spots on dishes, dry skin and hair after bathing, and reduced water heater efficiency. Laundry may feel stiff, and you will likely need more detergent for effective cleaning.
Is Petersburg Water Safe to Drink?
Yes. Hard water at 158.5 ppm in Petersburg 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.
You may notice a slightly mineral or chalky taste at this hardness level. A drinking water filter (pitcher-style carbon filter or under-sink reverse osmosis system) can improve taste if desired, though the water remains perfectly safe to drink unfiltered.
Your Water vs National Average
Petersburg water at 158.5 ppm is 59% harder than the US average of approximately 100 ppm. This means your area has harder water than most of the country, and a water softener would provide more benefit here than in an average American home.
Best Solution for 158.5 PPM Water
A whole-house water softener is recommended ($800–2,500 installed). At 158.5 ppm, an ion exchange softener will protect your water heater, dishwasher, and plumbing from scale buildup. You will also notice improved skin and hair health, softer laundry, and reduced soap and detergent usage. The system typically pays for itself within 3–5 years through energy savings and extended appliance life.
Lincoln County Water Hardness Map
Soft Moderate Hard Very Hard
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Frequently Asked Questions
What is the water hardness for ZIP code 37144?
ZIP code 37144 is in Lincoln County, Tennessee, with estimated water hardness of 158.5 mg/L (9.3 GPG), classified as hard. The area is served by PETERSBURG WATER SYSTEM.
Do I need a water softener in 37144?
With hard water at 158.5 PPM, a water softener is recommended to protect your plumbing and appliances from mineral scale buildup.
What county is ZIP code 37144 in?
ZIP code 37144 is in Lincoln County, Tennessee (TN).
Is Petersburg water hard or soft?
Petersburg water is classified as hard with an estimated hardness of 158.5 ppm (9.3 GPG). This is hard water — you may notice scale buildup, dry skin, and spots on dishes.
Is hard water in 37144 safe to drink?
Yes, hard water in ZIP code 37144 at 158.5 ppm is safe to drink. The calcium and magnesium minerals are actually beneficial for your health. You may notice a slightly mineral taste. A simple carbon or reverse osmosis filter can improve taste if desired, but the water is perfectly safe unfiltered.
Will 158.5 PPM water damage my appliances?
At 158.5 ppm (hard), scale buildup will reduce water heater efficiency and can shorten appliance lifespan. A water softener is recommended to protect your investment.
Do I need a water softener in Lincoln County?
Yes — Lincoln County has hard water at 158.5 ppm. A water softener ($800-2,500 installed) is recommended to protect plumbing and appliances.
Is Petersburg water OK for aquariums and plants?
Use caution. At 158.5 ppm, soft-water fish species may struggle. Consider using filtered water for aquariums. For plants, hard water can raise soil pH — use rainwater or filtered water for acid-loving species.