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City water profile

Laconia water quality

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

Median indexed hardness

52PPM

One indexed ZIP

Range 52.3–52.3 PPM

State comparison
6 PPM below
State hardness rank
#44 of 74
Matched utilities
5
Active health records
0

City summary

What the indexed records say

Laconia has 1 published ZIP profile across Belknap County. The indexed median is 52 PPM, compared with 58 PPM across New Hampshire.

Among the 74 New Hampshirecities with an indexed median, Laconia ranks #44from 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

Soft1 ZIP
Moderately hard0 ZIPs
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
39.6 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 Laconia

Open a ZIP for site-level provenance and measurements.

ZIP code

03246

Soft

52.3 PPM

Nearest site
39.6 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Laconia Water Works

PWSID NH1281010

Surface water
System population served
17,125
Last reported
Jun 23, 2026

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

Pendleton Cove

PWSID NH1282030

Groundwater
System population served
204
Last reported
Jun 23, 2026

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

Wentworth Cove Estates

PWSID NH1282020

Groundwater
System population served
140
Last reported
Jun 23, 2026

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

Mountain View Apts

PWSID NH1282010

Groundwater
System population served
100
Last reported
Jun 23, 2026

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

Windemere Ridge

PWSID NH1282050

Groundwater
System population served
55
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
TTHMNH1282020Apr 1, 2024Resolved
Total Haloacetic Acids (HAA5)NH1282020Apr 1, 2024Resolved
ChlorineNH1282020Apr 1, 2024Resolved
Revised Total Coliform RuleNH1282050Feb 9, 2023Resolved
Revised Total Coliform RuleNH1282050Jan 1, 2023Resolved
Lead and Copper RuleNH1282010Feb 3, 2021Resolved · 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 Laconia

Is the water hard?

The indexed city median is 52 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.