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City water profile

Huntsville water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Huntsville, Alabama.

Median indexed hardness

103PPM

17 indexed ZIPs

Range 100–140 PPM

State comparison
65 PPM above
State hardness rank
#60 of 281
Matched utilities
2
Active health records
0

City summary

What the indexed records say

Huntsville has 17 published ZIP profiles across Madison County and Morgan County and Limestone County. The indexed median is 103 PPM, compared with 38 PPM across Alabama.

Among the 281 Alabamacities with an indexed median, Huntsville ranks #60from highest to lowest. Across all 406 state ZIP profiles, available estimates run from 7.4to 2810 PPM.

The 100–140 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 hard10 ZIPs
Hard7 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
64 miles
Profiles with evidence
17/17

Confidence labels

High: 0Moderate: 5Low: 12

Observation window: Jan 19, 2016 to Feb 2, 2026.

ZIP directory

Water reports in Huntsville

Open a ZIP for site-level provenance and measurements.

ZIP code

35741

Hard

140 PPM

Nearest site
64 mi
Confidence
Low

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ZIP code

35748

Hard

140 PPM

Nearest site
60.5 mi
Confidence
Low

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ZIP code

35754

Moderately Hard

102.5 PPM

Nearest site
67.8 mi
Confidence
Low

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ZIP code

35756

Moderately Hard

103 PPM

Nearest site
5.1 mi
Confidence
Moderate

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ZIP code

35757

Moderately Hard

100 PPM

Nearest site
6 mi
Confidence
Moderate

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ZIP code

35763

Moderately Hard

102.5 PPM

Nearest site
61.6 mi
Confidence
Low

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ZIP code

35773

Moderately Hard

100 PPM

Nearest site
1 mi
Confidence
Moderate

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ZIP code

35801

Moderately Hard

102.5 PPM

Nearest site
69.2 mi
Confidence
Low

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ZIP code

35802

Moderately Hard

102.5 PPM

Nearest site
67.4 mi
Confidence
Low

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ZIP code

35803

Moderately Hard

102.5 PPM

Nearest site
63.2 mi
Confidence
Low

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ZIP code

35805

Hard

140 PPM

Nearest site
71.7 mi
Confidence
Low

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ZIP code

35806

Moderately Hard

101.5 PPM

Nearest site
7.9 mi
Confidence
Moderate

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ZIP code

35810

Hard

140 PPM

Nearest site
73.4 mi
Confidence
Low

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ZIP code

35811

Hard

140 PPM

Nearest site
68.2 mi
Confidence
Low

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ZIP code

35816

Hard

140 PPM

Nearest site
73 mi
Confidence
Low

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ZIP code

35824

Moderately Hard

101.5 PPM

Nearest site
7.2 mi
Confidence
Moderate

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ZIP code

35896

Hard

140 PPM

Nearest site
74.5 mi
Confidence
Low

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Public water systems

Utilities associated with this city

Huntsville Utilities Water Dept.

PWSID AL0000882

Surface water
System population served
310,107
Last reported
May 18, 2026

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

Madison County Water Department

PWSID AL0000888

Surface water
System population served
119,100
Last reported
May 18, 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
EndrinAL0000888Jan 11, 2023Resolved
BHC-GAMMAAL0000888Jan 11, 2023Resolved
MethoxychlorAL0000888Jan 11, 2023Resolved
DalaponAL0000888Jan 11, 2023Resolved
DiquatAL0000888Jan 11, 2023Resolved
GlyphosateAL0000888Jan 11, 2023Resolved
Di(2-ethylhexyl) adipateAL0000888Jan 11, 2023Resolved
OXAMYLAL0000888Jan 11, 2023Resolved
SimazineAL0000888Jan 11, 2023Resolved
Di(2-ethylhexyl) phthalateAL0000888Jan 11, 2023Resolved

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 Huntsville

Is the water hard?

The indexed city median is 103 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.