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City water profile

Manchester water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Manchester, New Hampshire.

Median indexed hardness

57PPM

5 indexed ZIPs

Range 57.2–58 PPM

State comparison
1 PPM below
State hardness rank
#40 of 74
Matched utilities
2
Active health records
0

City summary

What the indexed records say

Manchester has 5 published ZIP profiles across Hillsborough County. The indexed median is 57 PPM, compared with 58 PPM across New Hampshire.

Among the 74 New Hampshirecities with an indexed median, Manchester ranks #40from highest to lowest. Across all 90 state ZIP profiles, available estimates run from 16to 102 PPM.

The 57.2–58 PPM range shows how much the available ZIP estimates vary within the city label.

Hardness distribution

How local ZIP estimates compare

Soft5 ZIPs
Moderately hard0 ZIPs
Hard0 ZIPs
Very hard0 ZIPs

5 of 5 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
12.8 miles
Profiles with evidence
5/5

Confidence labels

High: 0Moderate: 5Low: 0

Observation window: Jan 4, 2016 to Jun 8, 2026.

ZIP directory

Water reports in Manchester

Open a ZIP for site-level provenance and measurements.

ZIP code

03101

Soft

57.2 PPM

Nearest site
13.8 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

03102

Soft

58 PPM

Nearest site
14.8 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

03103

Soft

57.2 PPM

Nearest site
12.8 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

03104

Soft

58 PPM

Nearest site
12.2 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

03109

Soft

57.2 PPM

Nearest site
11.4 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Manchester Water Works

PWSID NH1471010

Surface water
System population served
123,500
Last reported
Jun 23, 2026

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

Rockwood Terrace Condos

PWSID NH1472030

Groundwater
System population served
25
Last reported
Jun 23, 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
Public NoticeNH1472030Feb 23, 2026Resolved
Lead and Copper RuleNH1472030Jan 1, 2026Unaddressed
Revised Total Coliform RuleNH1472030Dec 11, 2025Resolved
Revised Total Coliform RuleNH1472030Nov 1, 2025Resolved
Public NoticeNH1472030Oct 22, 2025Resolved
Public NoticeNH1472030Oct 22, 2025Resolved
Revised Total Coliform RuleNH1472030Sep 8, 2025Resolved · health-based
Revised Total Coliform RuleNH1472030Sep 8, 2025Resolved
Public NoticeNH1472030Dec 16, 2024Resolved
Revised Total Coliform RuleNH1472030Oct 7, 2024Resolved · health-based

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 Manchester

Is the water hard?

The indexed city median is 57 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.