Laconia, NH 03246

4 water systems • 17,220 residents

Poor water quality - filtration recommended

D

Score: 36/100

Graded on EPA violations, contaminants, severity, compliance, and enforcement history. See methodology.

Data updated June 2026 • Sources: EPA ECHO and EPA Envirofacts

31

Contaminants Detected

401

Violations on Record

42

Health-Based Violations

0

Recent Violations

Grade Breakdown

Contaminant Count0 / 25
Violation History12 / 25
Contaminant Severity12 / 25
System Compliance4 / 15
Enforcement History0 / 10
Total Score36%

36 / 100 points

Recommended Water Filters

  • ✓Point-of-Use Carbon Filter (NSF-certified for lead)
  • ✓Reverse Osmosis or Ion Exchange Filter
  • ✓Ultraviolet (UV) Purification
  • ✓Whole Home Carbon Filter System
Compare filter types in our Filter Guide →

Consult a water quality specialist for personalized recommendations.

Laconia vs NH & National Average

Detected Contaminants

31 contaminants detected across water systems serving this ZIP code

ContaminantCategory
NitrateAgricultural
NitriteAgricultural
ArsenicHeavy Metal
Lead and Copper RuleHeavy Metal
Coliform (TCR)Microorganism
Revised Total Coliform RuleMicroorganism
1,1,1-TrichloroethaneOther
1,1,2-TrichloroethaneOther
1,2-DichloropropaneOther
Consumer Confidence RuleOther
DICHLOROMETHANEOther
Public NoticeOther
Combined Radium (-226 and -228)Radiological
Combined UraniumRadiological
1,1-DichloroethyleneVolatile Organic
1,2-DichloroethaneVolatile Organic
1,2,4-TrichlorobenzeneVolatile Organic
BenzeneVolatile Organic
Carbon tetrachlorideVolatile Organic
CHLOROBENZENEVolatile Organic
cis-1,2-DichloroethyleneVolatile Organic
EthylbenzeneVolatile Organic
o-DichlorobenzeneVolatile Organic
p-DichlorobenzeneVolatile Organic
StyreneVolatile Organic
TetrachloroethyleneVolatile Organic
TolueneVolatile Organic
trans-1,2-DichloroethyleneVolatile Organic
TrichloroethyleneVolatile Organic
Vinyl chlorideVolatile Organic
Xylenes, TotalVolatile Organic

Water System Information

Systems Serving This ZIP:
LACONIA WATER WORKS, MOUNTAIN VIEW APTS, LAKESIDE AT WINNIPESAUKEE, CHALET VILLAGE
Population Served:
17,220
Systems With Violations:
3 of 4
Major Violations:
267
Enforcement Actions:
400

Nearby Areas

03249

Gilford • 2.1 mi away

D

03276

Tilton • 3.2 mi away

F

03269

Sanbornton • 5 mi away

A

03220

Belmont • 5.6 mi away

D

03253

Meredith • 6 mi away

D

03853

Mirror Lake • 10.5 mi away

F

Frequently Asked Questions

What does the grade mean?

Our A–F grade ranks this ZIP code's water quality against every other analyzed ZIP in the country, based on EPA data. A = among the best, F = among the most troubled.

Is my tap water safe to drink?

Water systems regulated by the EPA must comply with Safe Drinking Water Act standards. However, if you're concerned about water quality, consider a water filter appropriate for your contaminants.

How often is the data updated?

We update our data quarterly with the latest EPA ECHO and Envirofacts data. Historical violations are tracked to identify patterns.

What filters do you recommend?

Filter recommendations are based on detected contaminants in your area. See our Filter Guide for detailed information about different filter types.