Is Murfreesboro, TN Tap Water Safe to Drink?
Yes, Murfreesboro tap water is safe to drink. No contaminants exceed health guidelines. However, Murfreesboro has hard water at 161 PPM, which will cause scale buildup in plumbing and appliances over time. A softener or conditioner is worth considering.
Hardness Scale: Where Murfreesboro Falls
0Slightly
60Moderate
120Hard
180Very Hard
250Extreme
400+
How Murfreesboro Compares
Murfreesboro's water is 17% harder than the national average of 138 PPM. It ranks #422 out of 1000 cities in our database (harder than 58% of US cities we track). Within Tennessee, Murfreesboro has the 2nd hardest water out of 20 cities - 68% above the state average of 96 PPM. Among large cities (200k-500k), Murfreesboro ranks #65 of 165 for hardness. At this hardness level, water heaters run an estimated 30% less efficiently due to scale insulation, and major water-using appliances typically last 2 years less than the national average lifespan.
What Murfreesboro's Water Means for Your Home
Hardness: 161 PPM - Treatment Recommended
Murfreesboro's water is hard at 161 PPM (9.4 GPG). That's enough to notice every day: gradual scale on fixtures, spots on dishes, soap that doesn't lather the way it should. That's 68% harder than the Tennessee average. Homeowners who install a water softener or salt-free conditioner notice the difference fast: better lathering, cleaner dishes, and appliances that last longer. That adds up. Hard water at 161 PPM increases household costs through scale-coated water heaters that use more energy, extra soap and detergent, and appliances that wear out faster. Most Murfreesboro homeowners don't realize it until the plumber shows up.
Contaminants & Safety
Disinfection byproducts are the notable finding here. Murfreesboro's water has TTHMs at 38.4 ppb and HAA5 at 29.5 ppb — both within legal limits, but the EWG health guidelines are far stricter. These byproducts form when chlorine reacts with organic matter during treatment. A whole-house activated carbon filter reduces both chlorine and its byproducts. Want the full picture? Request your utility's annual Consumer Confidence Report.
What's in the Treatment Process
Murfreesboro's surface water supply requires heavy chlorination to stay safe — but that creates a tradeoff. The treatment process generates disinfection byproducts: TTHMs at 38.4 ppb (48% of the legal limit, but 256x the EWG guideline) and HAA5 at 29.5 ppb (49% of the legal limit, but 295x the EWG guideline). These are within legal limits, but the EWG sets much tighter thresholds based on cancer-risk research. A whole-house activated carbon filter reduces both chlorine and byproducts.
Chromium-6 was detected at 0.0713 ppb, which is 3.6x the EWG health guideline. There's no separate federal limit for chromium-6, only total chromium. A reverse osmosis system is the most effective removal method. All measurements are within federal legal limits. The EWG guidelines represent a more conservative, health-based standard.
How Hard Water Affects Your Home
At 161 PPM, untreated hard water has measurable effects on household costs and appliance life:
- Water heater inefficiency: Scale insulation forces the heater to work harder (DOE estimates up to 22% more energy for heavily scaled units)
- Soap and detergent: Hard water reduces lathering, requiring significantly more product
- Appliance replacement: Water heaters, dishwashers, and washing machines fail 2-4 years earlier due to scale buildup
- Plumbing maintenance: Scale buildup in pipes reduces flow and requires more frequent service
Note: Impact varies by household size, water usage, and local energy costs. A home water test provides the most accurate assessment for your specific situation.
| Contaminant | Detected | Health Guideline | Legal Limit | Status |
|---|---|---|---|---|
| Hardness (as CaCO₃) | 161 PPM | < 60 PPM | No federal limit | ⚠ Hard |
| Total Dissolved Solids | 238 PPM | < 300 PPM | 500 PPM | ✓ OK |
| PFAS (total) | 21.4 ppt | — | No total limit | Detected |
| ↳ PFOA | 0 ppt | 0 ppt | 4 ppt (2024) | ✓ OK |
| ↳ PFOS | 0 ppt | 0 ppt | 4 ppt (2024) | ✓ OK |
| Lead | 0.5 ppb | 0 ppb (no safe level) | 15 ppb (10 ppb in 2027) | ✓ Low |
| Chlorine / Chloramine | 1.1 mg/L | Taste threshold ~1.0 | 4.0 mg/L | ✓ Normal |
| Nitrate | 0.577 mg/L | 5 mg/L | 10 mg/L | ✓ OK |
Our Top Picks for Murfreesboro (161 PPM)
Hard water at 161 PPM causes scale buildup, increased energy use, and premature appliance failure. A softener protects your plumbing and appliances.
Quick Fix for Chlorine: Shower Filter
At 1.1 mg/L chlorine, many Murfreesboro residents notice dry skin, brittle hair, and that "pool smell" in the shower. A shower filter installs in 5 minutes, no tools needed.
How to Test Your Water in Murfreesboro
With 161 PPM hardness, a quick test strip confirms whether your specific tap matches Murfreesboro's average before you invest in a softener. Hardness can vary within the same system.
Free option: Request Consolidated Utility's annual Consumer Confidence Report for official city-level data.
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About Murfreesboro's Water Supply
Water Utility: Consolidated Utility
Water Source: Percy Priest Reservoir (Surface Water)
Population Served: 221,871
Hardness: 161 PPM (9.4 grains per gallon)
Murfreesboro's drinking water comes from surface sources — Percy Priest Reservoir. Surface water requires more extensive treatment than groundwater, including coagulation, filtration, and disinfection. This heavier chlorination is why disinfection byproducts tend to be higher in surface-supplied systems. Despite the treatment process, mineral hardness from the watershed carries through. The system serves 222,000 residents.
Water quality can vary by neighborhood and season. For your exact numbers, request Consolidated Utility's Consumer Confidence Report (CCR) or test your own tap.
ZIP Codes Covered by This Report
This water quality data applies to all areas served by Consolidated Utility in Murfreesboro, TN, including ZIP codes:
37016, 37018, 37020, 37026, 37034, 37037, 37060, 37063, 37089, 37110, 37111, 37118, 37127, 37128, 37129, 37130, 37131, 37132, 37133, 37149, 37153, 37160, 37161, 37162, 37180, 37183, 37190, 37324, 37330, 37342, 37349, 37352, 37355, 37357, 37360, 37378, 37382, 37388, 37389, 37394
If your ZIP code is listed above, this report covers your water supply. Water quality may vary slightly by neighborhood.
Water Softener Sizing for Murfreesboro
At 161 PPM (9.4 GPG), here is how to size a softener for your Murfreesboro home. Multiply hardness in GPG (9.4) by daily water usage (roughly 50 gallons per person). A family of four uses about 200 gallons/day: 9.4 GPG × 200 gal = 1880 grains/day. Over a 7-day regeneration cycle, that is 13,160 grains - a 32,000-grain softener is the right fit for most Murfreesboro households.
Compare Murfreesboro to Other Tennessee Cities
Frequently Asked Questions About Murfreesboro Water
Is Murfreesboro tap water safe to drink?
Where does Murfreesboro's water come from?
Do I need a water softener in Murfreesboro?
Does Murfreesboro water damage tankless water heaters?
How much does hard water cost a Murfreesboro household per year?
What is the hardness of Murfreesboro water in grains per gallon?
What size water softener do I need for Murfreesboro?
Salt-based softener or salt-free conditioner for Murfreesboro?
Data sources: Lead and copper data from EPA Safe Drinking Water Act LCR reporting. Contaminant data from utility-reported testing results. PFAS data from EPA UCMR5 (2023–2025). Hardness from USGS and municipal reports. Data reflects system-level testing results and may not match your specific tap due to neighborhood plumbing, season, or recent utility changes. For your utility's latest results, request their Consumer Confidence Report (CCR). Our methodology. Last updated: 2026-02-24.
What Murfreesboro Homeowners Actually Buy
Common purchases for homes with 161 PPM water.
Affiliate disclosure: we may earn a commission. Selection based on Murfreesboro's water data.