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City water profile

Baton Rouge water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Baton Rouge, Louisiana.

Median indexed hardness

119PPM

16 indexed ZIPs

Range 112–122 PPM

State comparison
29 PPM above
State hardness rank
#18 of 52
Matched utilities
1
Active health records
0

City summary

What the indexed records say

Baton Rouge has 16 published ZIP profiles across East Baton Rouge Parish. The indexed median is 119 PPM, compared with 90 PPM across Louisiana.

Among the 52 Louisianacities with an indexed median, Baton Rouge ranks #18from highest to lowest. Across all 102 state ZIP profiles, available estimates run from 4.8to 314 PPM.

The 112–122 PPM range shows how much the available ZIP estimates vary within the city label. At least one estimate is marked low confidence, so observation distance and date deserve extra attention.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs
Moderately hard11 ZIPs
Hard5 ZIPs
Very hard0 ZIPs

16 of 16 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
19 miles
Profiles with evidence
16/16

Confidence labels

High: 0Moderate: 14Low: 2

Observation window: May 18, 2016 to Jul 22, 2021.

ZIP directory

Water reports in Baton Rouge

Open a ZIP for site-level provenance and measurements.

ZIP code

70801

Hard

122 PPM

Nearest site
21.1 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

70802

Moderately Hard

119 PPM

Nearest site
20.4 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

70803

Moderately Hard

119 PPM

Nearest site
19 mi
Confidence
Moderate

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ZIP code

70805

Moderately Hard

119 PPM

Nearest site
21.7 mi
Confidence
Moderate

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ZIP code

70806

Moderately Hard

115.5 PPM

Nearest site
18.3 mi
Confidence
Moderate

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ZIP code

70807

Hard

122 PPM

Nearest site
27 mi
Confidence
Low

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ZIP code

70808

Moderately Hard

119 PPM

Nearest site
17 mi
Confidence
Moderate

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ZIP code

70809

Moderately Hard

112 PPM

Nearest site
13.4 mi
Confidence
Moderate

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ZIP code

70813

Hard

122 PPM

Nearest site
25.2 mi
Confidence
Low

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ZIP code

70814

Moderately Hard

112 PPM

Nearest site
17.8 mi
Confidence
Moderate

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ZIP code

70815

Moderately Hard

112 PPM

Nearest site
16.3 mi
Confidence
Moderate

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ZIP code

70816

Moderately Hard

112 PPM

Nearest site
13.4 mi
Confidence
Moderate

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ZIP code

70819

Moderately Hard

112 PPM

Nearest site
15.5 mi
Confidence
Moderate

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ZIP code

70820

Hard

122 PPM

Nearest site
19.2 mi
Confidence
Moderate

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ZIP code

70825

Hard

122 PPM

Nearest site
21.3 mi
Confidence
Moderate

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ZIP code

70836

Moderately Hard

112 PPM

Nearest site
13.7 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Baton Rouge Water Company

PWSID LA1033005

Groundwater
System population served
596,844
Last reported
Jun 23, 2026

A municipal system, in-state city, and served county all agree with this Census ZCTA.

Compliance history

What EPA records show

No active health-based violation appears among the associated systems in the represented EPA reporting quarter. This does not mean every contaminant was tested at every tap.

No violation records are included in the current lookback window.

Practical next steps

Move from index to evidence

  1. 1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
  2. 2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
  3. 3. Test the tap when needed. Confirm health concerns or treatment sizing with the right method.

Questions people ask

About water in Baton Rouge

Is the water hard?

The indexed city median is 119 PPM. Open the ZIP report to verify the distance and confidence behind that estimate.

Is the tap water safe?

Compliance history is utility-wide and cannot guarantee conditions at every tap. Check current notices and test when address-specific evidence is needed.

Do I need treatment?

Choose treatment only after confirming the problem at the property. A softener targets hardness; contaminant treatment requires a matching, verified performance claim.