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City water profile

Hopatcong water quality

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

Median indexed hardness

119PPM

2 indexed ZIPs

Range 117–121.5 PPM

State comparison
38 PPM above
State hardness rank
#1 of 60
Matched utilities
1
Active health records
0

City summary

What the indexed records say

Hopatcong has 2 published ZIP profiles across Sussex County. The indexed median is 119 PPM, compared with 81 PPM across New Jersey.

Among the 60 New Jerseycities with an indexed median, Hopatcong ranks #1from highest to lowest. Across all 84 state ZIP profiles, available estimates run from 47to 121.5 PPM.

The 117–121.5 PPM range shows how much the available ZIP estimates vary within the city label.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs
Moderately hard1 ZIP
Hard1 ZIP
Very hard0 ZIPs

2 of 2 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 miles
Profiles with evidence
2/2

Confidence labels

High: 0Moderate: 2Low: 0

Observation window: Mar 30, 2016 to Jun 10, 2026.

ZIP directory

Water reports in Hopatcong

Open a ZIP for site-level provenance and measurements.

ZIP code

07821

Hard

121.5 PPM

Nearest site
2.8 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

07843

Moderately Hard

117 PPM

Nearest site
3 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Hopatcong Water Dept

PWSID NJ1912001

Groundwater
System population served
7,224
Last reported
Jun 30, 2026

A municipal system, in-state city, and served county all agree with this Census 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
E. COLINJ1912001Apr 11, 2025Unaddressed
Lead and Copper RuleNJ1912001Oct 1, 2024Unaddressed
Public NoticeNJ1912001Jan 12, 2024Resolved
Public NoticeNJ1912001Jan 12, 2024Resolved
Public NoticeNJ1912001Jan 12, 2024Resolved
Public NoticeNJ1912001Jan 12, 2024Resolved
Public NoticeNJ1912001Jan 12, 2024Resolved
Public NoticeNJ1912001Jan 12, 2024Resolved
Public NoticeNJ1912001Jan 12, 2024Resolved
Public NoticeNJ1912001Jan 12, 2024Resolved

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 Hopatcong

Is the water hard?

The indexed city median is 119 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.