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City water profile

Walpole water quality

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

Median indexed hardness

99PPM

One indexed ZIP

Range 98.9–98.9 PPM

State comparison
41 PPM above
State hardness rank
#7 of 74
Matched utilities
3
Active health records
0

City summary

What the indexed records say

Walpole has 1 published ZIP profile across Cheshire County. The indexed median is 99 PPM, compared with 58 PPM across New Hampshire.

Among the 74 New Hampshirecities with an indexed median, Walpole ranks #7from highest to lowest. Across all 90 state ZIP profiles, available estimates run from 16to 102 PPM.

Because only one ZIP is represented, the city median and range are the same local estimate. It should not be read as multiple independent samples across the community.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs
Moderately hard1 ZIP
Hard0 ZIPs
Very hard0 ZIPs

1 of 1 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
3.5 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 1Low: 0

Observation window: Jan 13, 2016 to Sep 25, 2023.

ZIP directory

Water reports in Walpole

Open a ZIP for site-level provenance and measurements.

ZIP code

03608

Moderately Hard

98.9 PPM

Nearest site
3.5 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Walpole Water Dept

PWSID NH2401010

Groundwater
System population served
1,057
Last reported
Jun 23, 2026

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

N Walpole Village District/low

PWSID NH2401020

Groundwater
System population served
625
Last reported
Jun 23, 2026

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

N Walpole Village Dist/high

PWSID NH2401030

Groundwater
System population served
125
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
Lead and Copper RuleNH2401020Apr 1, 2025Resolved
Lead and Copper RuleNH2401030Apr 1, 2025Resolved
Public NoticeNH2401020Nov 28, 2024Unaddressed
Public NoticeNH2401020Nov 28, 2024Unaddressed
TTHMNH2401020Jul 1, 2024Resolved
Total Haloacetic Acids (HAA5)NH2401020Jul 1, 2024Resolved
Public NoticeNH2401020Nov 30, 2023Resolved
Public NoticeNH2401020Nov 30, 2023Unaddressed
Public NoticeNH2401020Nov 30, 2023Unaddressed
Public NoticeNH2401030Nov 30, 2023Unaddressed

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 Walpole

Is the water hard?

The indexed city median is 99 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.