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City water profile

Littleton water quality

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

Median indexed hardness

69PPM

One indexed ZIP

Range 69.1–69.1 PPM

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

City summary

What the indexed records say

Littleton has 1 published ZIP profile across Grafton County. The indexed median is 69 PPM, compared with 58 PPM across New Hampshire.

Among the 74 New Hampshirecities with an indexed median, Littleton ranks #21from 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. 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 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
16.7 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: Jan 20, 2016 to Mar 17, 2026.

ZIP directory

Water reports in Littleton

Open a ZIP for site-level provenance and measurements.

ZIP code

03561

Moderately Hard

69.1 PPM

Nearest site
16.7 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Littleton Water And Light

PWSID NH1381010

Surface water
System population served
6,500
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 RuleNH1381010Jan 1, 2026Resolved

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 Littleton

Is the water hard?

The indexed city median is 69 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.