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City water profile

Water hardness in Hopatcong

Find official utility reports, understand hardness, and check the water system serving your home in Hopatcong, New Jersey.

Utility-reported hardness

Not yet available

Check your provider and source →
State comparison
Unavailable
Evidence comparison rank
—
Matched utilities
1
Active health records
0

Your tap water

What does the utility report?

Match the utility name to your water bill. These results describe the utility’s water, not a test at your home. A ZIP can include several water systems.

Utility hardness unavailable in this index

Nearby river or groundwater samples cannot tell us the hardness coming out of your tap. Ask your water provider for total hardness as CaCO₃, or test it at home.

Find an official utility report →
Convert a hardness result →Test your tap →

Match the name on your water bill

Your utility’s measurements and compliance records

These are possible serving systems. A record for one system does not apply to every home in this ZIP. Confirm your provider before interpreting a measurement or notice. Federal records can lag current utility notices.

EPA snapshot: 2026Q2. Historical window begins Jan 1, 2021.

Hopatcong Water Dept

NJ1912001 · Groundwater · 7,224 people served system-wide

A municipal system, in-state city, and served county all agree with this Census ZCTA.

No active health-based record in this imported snapshot

Find this utility’s official report →
Measurements (1)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level
Reported level
0.0085 mg/L
Action level
0.015 mg/L

56% of the listed benchmark

Monitoring period: Jan 1, 2026 to Jun 30, 2026

Violation history (14)
Imported violation history for Hopatcong Water Dept
RuleStatusPeriod
E. COLIUnaddressedApr 11, 2025
Lead and Copper RuleUnaddressedOct 1, 2024
Public NoticeResolvedJan 12, 2024 to Apr 11, 2024
Public NoticeResolvedJan 12, 2024 to Feb 12, 2024
Public NoticeResolvedJan 12, 2024 to Apr 11, 2024
Public NoticeResolvedJan 12, 2024 to Apr 11, 2024
Public NoticeResolvedJan 12, 2024 to Feb 12, 2024
Public NoticeResolvedJan 12, 2024 to Apr 11, 2024
Public NoticeResolvedJan 12, 2024 to Feb 12, 2024
Public NoticeResolvedJan 12, 2024 to Apr 11, 2024
Public NoticeResolvedMay 25, 2022 to Jul 15, 2022
Public NoticeResolvedFeb 25, 2022 to Sep 30, 2022
NitrateResolvedJan 1, 2021 to Dec 31, 2021
NitrateResolvedJan 1, 2021 to Dec 31, 2021

City summary

What the indexed records say

Hopatcong has 2 published ZIP profiles across Sussex County. The regional-evidence median is 277 PPM. The city does not meet the stricter comparison standard.

The 274–279 PPM range shows how much the available ZIP estimates vary within the city label.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs
Moderately hard0 ZIPs
Hard0 ZIPs
Very hard2 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: 2Moderate: 0Low: 0

Observation window: Apr 19, 2016 to Jan 22, 2026.

ZIP directory

Water reports in Hopatcong

Open a ZIP for site-level provenance and measurements.

ZIP code

07821

Very Hard

274 PPM

Nearest site
2.8 mi
Confidence
High

View full ZIP evidence →

ZIP code

07843

Very Hard

279 PPM

Nearest site
3 mi
Confidence
High

View full ZIP evidence →

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. Use a measured hardness result. Confirm health concerns or treatment sizing with the right method.

Questions people ask

About water in Hopatcong

Is the water hard?

Check the utility-reported result above when available. Nearby environmental samples cannot establish tap-water hardness. Ask your provider or test your tap.

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.