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City water profile

Chattanooga water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Chattanooga, Tennessee.

Median indexed hardness

50PPM

17 indexed ZIPs

Range 43.5–57.5 PPM

State comparison
At state median
State hardness rank
#102 of 222
Matched utilities
4
Active health records
0

City summary

What the indexed records say

Chattanooga has 17 published ZIP profiles across Hamilton County and Marion County. The indexed median is 50 PPM, compared with 50 PPM across Tennessee.

Among the 222 Tennesseecities with an indexed median, Chattanooga ranks #102from highest to lowest. Across all 323 state ZIP profiles, available estimates run from 4.5to 247 PPM.

The 43.5–57.5 PPM range shows how much the available ZIP estimates vary within the city label.

Hardness distribution

How local ZIP estimates compare

Soft17 ZIPs
Moderately hard0 ZIPs
Hard0 ZIPs
Very hard0 ZIPs

17 of 17 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
8.3 miles
Profiles with evidence
17/17

Confidence labels

High: 0Moderate: 17Low: 0

Observation window: Jan 6, 2016 to Dec 5, 2024.

ZIP directory

Water reports in Chattanooga

Open a ZIP for site-level provenance and measurements.

ZIP code

37343

Soft

57.5 PPM

Nearest site
14.4 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

37351

Soft

50 PPM

Nearest site
10.3 mi
Confidence
Moderate

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ZIP code

37402

Soft

50 PPM

Nearest site
8.8 mi
Confidence
Moderate

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ZIP code

37403

Soft

50 PPM

Nearest site
8 mi
Confidence
Moderate

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ZIP code

37404

Soft

50 PPM

Nearest site
6.2 mi
Confidence
Moderate

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ZIP code

37405

Soft

57.5 PPM

Nearest site
15.6 mi
Confidence
Moderate

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ZIP code

37406

Soft

50 PPM

Nearest site
8.3 mi
Confidence
Moderate

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ZIP code

37407

Soft

50 PPM

Nearest site
5.7 mi
Confidence
Moderate

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ZIP code

37408

Soft

50 PPM

Nearest site
7.9 mi
Confidence
Moderate

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ZIP code

37409

Soft

50 PPM

Nearest site
8.2 mi
Confidence
Moderate

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ZIP code

37410

Soft

50 PPM

Nearest site
6.9 mi
Confidence
Moderate

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ZIP code

37411

Soft

44.5 PPM

Nearest site
5 mi
Confidence
Moderate

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ZIP code

37415

Soft

57.5 PPM

Nearest site
12.3 mi
Confidence
Moderate

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ZIP code

37416

Soft

43.5 PPM

Nearest site
10.1 mi
Confidence
Moderate

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ZIP code

37419

Soft

57.5 PPM

Nearest site
13.8 mi
Confidence
Moderate

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ZIP code

37421

Soft

44.5 PPM

Nearest site
5.6 mi
Confidence
Moderate

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ZIP code

37450

Soft

50 PPM

Nearest site
8.7 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Tennessee American Water

PWSID TN0000107

Surface water
System population served
207,046
Last reported
May 14, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Eastside Utility District

PWSID TN0000219

Surface water
System population served
59,612
Last reported
May 14, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Suck Creek Water System

PWSID TN0000909

Groundwater
System population served
606
Last reported
May 14, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

River Landing Condominium Assoc

PWSID TN0000924

Groundwater influenced by surface water
System population served
52
Last reported
May 14, 2026

The system names this served city; Census place overlap links the city to this 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.

RecordSystemPeriodStatus
Consumer Confidence RuleTN0000924Jul 1, 2025Resolved
Consumer Confidence RuleTN0000219Jul 1, 2024Resolved
Consumer Confidence RuleTN0000219Jul 1, 2024Unaddressed
Consumer Confidence RuleTN0000219Jul 1, 2023Unaddressed
Public NoticeTN0000924Mar 1, 2015Addressed
Public NoticeTN0000924Feb 1, 2015Addressed
Public NoticeTN0000924Jan 1, 2015Addressed
Public NoticeTN0000924Dec 1, 2014Addressed

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 Chattanooga

Is the water hard?

The indexed city median is 50 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.