Water Quality in Baton Rouge, LA

Baton Rouge's water has PFAS above EPA limits (5 ppt). An activated carbon filter can reduce PFAS levels. Read below for a full breakdown.

Baton Rouge Water Company · Source: Southern Hills Aquifer · Serves 227,470 residents

86
Hardness (PPM)
149
TDS (PPM)
1.1
Chlorine (mg/L)
5
PFAS (ppt)
4
Lead (ppb)
86 PPM 0 400 Moderately Hard
CONTAMINANT LEVELS Hardness 86 PPM TDS 149 PPM PFAS 5 ppt Lead 4 ppb Chlorine 1.1 mg/L Nitrate 2 mg/L

Hardness Scale: Where Baton Rouge Falls

Soft 060120180250400+
Moderately hardIndustrial corridor

In Louisiana's 'Cancer Alley' industrial corridor.

What Baton Rouge's Water Means for Your Home

Baton Rouge's water is moderately hard at 86 PPM. At this level, hard water is not a significant concern for most households. Scale buildup is minimal, and a water softener would provide little measurable benefit. If you are considering water treatment in Baton Rouge, focus on contaminant filtration rather than softening.

PFAS contamination is a significant concern in Baton Rouge. At 5 parts per trillion, levels exceed the EPA's 2024 maximum contaminant level of 4 ppt. PFAS are synthetic chemicals that do not break down in the environment or the human body, which is why they are called "forever chemicals." Long-term exposure has been associated with increased cancer risk, thyroid disruption, and immune system effects. A whole-house activated carbon filter or point-of-use reverse osmosis system can reduce PFAS to safe levels. Look for NSF P473 certification when comparing products.

ContaminantDetectedHealth GuidelineLegal LimitStatus
Hardness (as CaCO₃)86 PPM< 60 PPMNo federal limit✓ OK
Total Dissolved Solids149 PPM< 300 PPM500 PPM✓ OK
PFAS (total)5 ppt4 ppt (EPA)4 ppt (2024)⚠ Above limit
Lead4 ppb0 ppb (no safe level)15 ppb (action level)✓ Low
Chlorine / Chloramine1.1 mg/LTaste threshold ~1.04.0 mg/L✓ Normal
Nitrate2 mg/L5 mg/L10 mg/L✓ OK

Recommendations for Baton Rouge Homes

🔄 Salt-Free Conditioner (Optional)
At 86 PPM, Baton Rouge's water is moderately hard. Scale buildup is slow but noticeable over years, especially in tankless water heaters. A salt-free conditioner is a low-maintenance option if you want to extend appliance life.
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🔬 Activated Carbon Filter for PFAS
PFAS detected at 5 ppt, above the EPA maximum contaminant level of 4 ppt. PFAS are linked to cancer, thyroid disease, and immune system effects with long-term exposure. A whole-house granular activated carbon (GAC) filter or a point-of-use reverse osmosis system can reduce PFAS. Look for NSF P473 certification, which specifically tests for PFAS removal.
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About Baton Rouge's Water Supply

Water Utility: Baton Rouge Water Company

Water Source: Southern Hills Aquifer

Population Served: 227,470

Hardness: 86 PPM (5 grains per gallon)

Water quality can vary by neighborhood and season. The values above represent typical averages reported by Baton Rouge Water Company. To get exact numbers for your address, request a copy of the most recent Consumer Confidence Report (CCR) from your utility, or have your water independently tested.

Compare Baton Rouge to Other Louisiana Cities

New Orleans

80 PPM · Moderately Hard

Shreveport

79 PPM · Moderately Hard

Frequently Asked Questions About Baton Rouge Water

Is Baton Rouge tap water safe to drink?
Baton Rouge's water meets EPA legal standards for drinking water safety. However, legal limits and health-optimal levels are different things. PFAS levels exceed the 2024 EPA health standard, which is a concern for long-term exposure. Review the contaminant table above for specific numbers and how they compare to both legal limits and health guidelines.
Do I need a water softener in Baton Rouge?
At 86 PPM, Baton Rouge's water is moderately hard. Some homeowners at this level do not notice problems, while others see spotting on glassware, film on shower doors, or reduced soap lathering. Homes with tankless water heaters at this hardness level should strongly consider at least a salt-free conditioner, as scale buildup inside the heat exchanger can void the warranty. For other homes, it depends on your sensitivity and fixtures.
What water filter is best for Baton Rouge?
The best filter depends on which contaminants you want to address. For PFAS, look for a filter with NSF P473 certification. Granular activated carbon (GAC) and reverse osmosis systems are both effective. Standard carbon pitcher filters may not remove PFAS adequately. See our softener vs. filter guide to understand the difference between these categories.
Where does Baton Rouge's water come from?
Baton Rouge's drinking water is sourced from Southern Hills Aquifer and treated by Baton Rouge Water Company. In Louisiana's 'Cancer Alley' industrial corridor..
What is the hardness of Baton Rouge water in grains per gallon?
Baton Rouge's water hardness is 5 grains per gallon (GPG), which equals 86 parts per million (PPM). This is classified as moderately hard. To convert: 1 GPG = 17.1 PPM.
Does Baton Rouge water damage tankless water heaters?
At 5 GPG, Baton Rouge's water is unlikely to cause significant issues for tankless water heaters. However, if you notice reduced flow or efficiency over time, scale buildup could be a factor. Annual flushing with vinegar is good maintenance regardless of hardness.
Is Baton Rouge water safe for babies and infants?
Baton Rouge's water meets all EPA safety standards and is generally considered safe for preparing infant formula. The hardness minerals (calcium and magnesium) are not harmful. If your home has older plumbing, running cold water for 30 seconds before use is a good precaution to flush any lead from pipes.

Data sources. Water quality data compiled from EPA SDWIS, EWG Tap Water Database, USGS water hardness studies, and the Baton Rouge Water Company Consumer Confidence Report. Hardness and contaminant levels represent typical average values and may vary by neighborhood and season. Last updated: 2026-02-12.