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City water profile

Concord water quality

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

Median indexed hardness

65PPM

3 indexed ZIPs

Range 63–66.1 PPM

State comparison
7 PPM above
State hardness rank
#31 of 74
Matched utilities
1
Active health records
0

City summary

What the indexed records say

Concord has 3 published ZIP profiles across Merrimack County. The indexed median is 65 PPM, compared with 58 PPM across New Hampshire.

Among the 74 New Hampshirecities with an indexed median, Concord ranks #31from highest to lowest. Across all 90 state ZIP profiles, available estimates run from 16to 102 PPM.

The 63–66.1 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 hard3 ZIPs
Hard0 ZIPs
Very hard0 ZIPs

3 of 3 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
27.6 miles
Profiles with evidence
3/3

Confidence labels

High: 0Moderate: 1Low: 2

Observation window: Jan 10, 2016 to Jun 8, 2026.

ZIP directory

Water reports in Concord

Open a ZIP for site-level provenance and measurements.

ZIP code

03224

Moderately Hard

66.1 PPM

Nearest site
27.6 mi
Confidence
Low

View full ZIP evidence →

ZIP code

03301

Moderately Hard

63 PPM

Nearest site
22.5 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

03303

Moderately Hard

64.6 PPM

Nearest site
29.9 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Concord Water Dept

PWSID NH0501010

Surface water
System population served
44,215
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.

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 Concord

Is the water hard?

The indexed city median is 65 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.