Is Fort Smith, AR Tap Water Safe to Drink?
Yes, Fort Smith tap water is safe to drink. Hardness is low at 41 PPM, and no contaminants exceed health guidelines. Most homes here don't need treatment.
Hardness Scale: Where Fort Smith Falls
0Slightly
60Moderate
120Hard
180Very Hard
250Extreme
400+
How Fort Smith Compares
Fort Smith's water is 70% softer than the national average of 138 PPM - ranking in the bottom 75% for hardness nationwide. Most homes here do not need a softener. Within Arkansas, it ranks #7 of 13 cities (20% below the state average of 51 PPM). Among cities (50k-100k), Fort Smith ranks #207 of 258 for hardness.
What Fort Smith's Water Means for Your Home
Hardness: 41 PPM - Low Concern
Fort Smith's water is slightly hard at 41 PPM. Most households won't notice any issues at this level. Scale buildup is minimal, and a water softener would be overkill. If you're thinking about water treatment, contaminant filtration is where to focus your money, not softening.
Contaminants & Safety
Disinfection byproducts are the notable finding here. Fort Smith's water has TTHMs at 30.8 ppb and HAA5 at 16.9 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
Fort Smith's surface water supply requires heavy chlorination to stay safe — but that creates a tradeoff. The treatment process generates disinfection byproducts: TTHMs at 30.8 ppb (39% of the legal limit, but 206x the EWG guideline) and HAA5 at 16.9 ppb (28% of the legal limit, but 169x 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 0.0741 ppb, which is 3.7x 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.
| Contaminant | Detected | Health Guideline | Legal Limit | Status |
|---|---|---|---|---|
| Hardness (as CaCO₃) | 41 PPM | < 60 PPM | No federal limit | ✓ OK |
| Total Dissolved Solids | 150 PPM | < 300 PPM | 500 PPM | ✓ OK |
| PFAS (total) | 0 ppt | — | No total limit | ✓ ND |
| ↳ PFOA | 0 ppt | 0 ppt | 4 ppt (2024) | ✓ OK |
| ↳ PFOS | 0 ppt | 0 ppt | 4 ppt (2024) | ✓ OK |
| Lead | 1 ppb | 0 ppb (no safe level) | 15 ppb (10 ppb in 2027) | ✓ Low |
| Chlorine / Chloramine | 1.6 mg/L | Taste threshold ~1.0 | 4.0 mg/L | ✓ Normal |
| Nitrate | 0.229 mg/L | 5 mg/L | 10 mg/L | ✓ OK |
Recommendations for Fort Smith Homes
Quick Fix for Chlorine: Shower Filter
At 1.6 mg/L chlorine, many Fort Smith 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 Fort Smith
City-wide data is a solid starting point, but your specific tap might differ based on plumbing age, distance from the treatment plant, or seasonal changes.
Free option: Request Fort Smith Utilities's annual Consumer Confidence Report for official city-level data.
📊 Already Tested Your Water?
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About Fort Smith's Water Supply
Water Utility: Fort Smith Utilities
Water Source: Lee Creek Reservoir (Surface Water)
Population Served: 86,209
Hardness: 41 PPM (2.4 grains per gallon)
Fort Smith's drinking water comes from surface sources — Lee Creek 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. On the upside, surface sources often deliver softer water than deep aquifers. The system serves 86,000 residents.
Water quality can vary by neighborhood and season. For your exact numbers, request Fort Smith Utilities'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 Fort Smith Utilities in Fort Smith, AR, including ZIP codes:
71832, 71841, 71842, 71932, 71937, 71944, 71945, 71953, 71961, 71965, 71966, 71971, 71972, 71973, 72820, 72821, 72824, 72826, 72827, 72830, 72832, 72838, 72840, 72841, 72842, 72851, 72855, 72863, 72865, 72901, 72902, 72903, 72904, 72905, 72906, 72908, 72913, 72914, 72916, 72917, 72918, 72919, 72921, 72923, 72926, 72927, 72928, 72930, 72932, 72933, 72935, 72936, 72937, 72938, 72940, 72941, 72943, 72944, 72945, 72946, 72947, 72948, 72949, 72950, 72951, 72952, 72955, 72956, 72957, 72958, 74521, 74549, 74558, 74559, 74563, 74571, 74574, 74577, 74722, 74724, 74728, 74734, 74736, 74737, 74745, 74750, 74752, 74754, 74755, 74764, 74766, 74901, 74902, 74930, 74932, 74935, 74936, 74937, 74939, 74940, 74941, 74942, 74943, 74944, 74946, 74947, 74948, 74949, 74951, 74953, 74954, 74955, 74956, 74957, 74959, 74963, 74966
If your ZIP code is listed above, this report covers your water supply. Water quality may vary slightly by neighborhood.
Compare Fort Smith to Other Arkansas Cities
Frequently Asked Questions About Fort Smith Water
Is Fort Smith tap water safe to drink?
Where does Fort Smith's water come from?
Do I need a water softener in Fort Smith?
What are disinfection byproducts in Fort Smith's water?
Is chromium-6 in Fort Smith's water?
Why does Fort Smith water taste like chlorine?
Can I drink Fort Smith tap water straight from the faucet?
What water filter is best for Fort Smith?
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 Fort Smith Homeowners Actually Buy
Common purchases for homes with 41 PPM water.
Affiliate disclosure: we may earn a commission. Selection based on Fort Smith's water data.