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Federal water data

County water report

Hudson County Water Report

Drinking-water compliance, watershed health, monitoring records, and river conditions for Hudson County, New Jersey.

Water grade

A

Water score

71.1

State rank

#2

of 21

Health violations

2

EPA SDWIS, 5-year lookback

Watershed impaired

Not reported

EPA ATTAINS coverage varies by state

Monitoring sites

29

24,212 recent measurements

Live streamflow

No gauge

Primary USGS station not mapped

Water at a glance

Key Water Indicators for Hudson County

EPA SDWIS

Safety Grade

A

Score: 71.1 / 100

EPA SDWIS

Active Violations

2

5-year health-based lookback

EPA ATTAINS

Watershed Health

Not reported

Coverage varies by state

USGS NWIS

Streamflow Snapshot

No gauge

Primary USGS gauge not mapped

EPA WQP

Monitoring Sites

29

24,212 recent readings

Source: EPA SDWIS · Safe Drinking Water Information System

Drinking Water Compliance

Compliance grade

A

Based on EPA SDWIS compliance history.

Water score

Higher scores indicate cleaner recent compliance records.

71.1/100

Health violations

2

Health-based violations

Violations per 100K served

0.5

Population-normalized SDWIS rate

Data center water stress

Hudson County has 18 facilities in the DCWSI dataset.

ByCounty's DCWSI ranks this county #34 nationally by combining its water score with mapped data center density.

DCWSIThe Data Center Water Stress Index: 60% the county's water-system stress plus 40% how concentrated data centers already are, scored 0-100. Higher means data-center density and water pressure overlap more here.

79.6

0-100 index

Facility count

18

92.4 density percentile

Discharge estimate

Not reported

EPA CWA fields where available

Water vs median

+21.1

Compared with US county median

Named operators

CentersquareCoreSiteCyxteraDigital RealtyEquinix

Mapped facilities

  • BERNARD CHAUS INC

    SECAUCUS

    EPA ECHO

  • Centersquare NYC3 Data Center

    Secaucus · Centersquare

    OSM

  • CoreSite NY3

    Secaucus · CoreSite

    OSM

  • CoreSite Secaucus Campus

    CoreSite

    OSM

  • Cyxtera (Digital Realty Trust) Citibank Data Center

    Weehawken · Cyxtera

    OSM

  • Digital Realty New Jersey EWR10

    Weehawken · Digital Realty

    OSM

12 more mapped facilities included in the county score.

See the Hudson County data-center reportReview methodology

Data Center Water Budget Calculator

Estimate daily water use for a hypothetical facility in Hudson County.

1 MW1,000 MW
40%100%
799K gallons/dayHigh Impact

Your facility would use 74.8% of this county's industrial water baseline. Verify water rights and long-term drought projections before committing.

74.8% of county industrial baseline0.27 Mgal/day remaining headroom

Based on USGS 2020 water-use data and EPA-standard cooling intensity constants. Not a substitute for site-specific water rights analysis.

Editorial analysis

Understanding Hudson County’s Water

Drinking Water Quality Overview

EPA SDWIS

Hudson County earns an A grade for drinking water quality, scoring 71.1 out of 100. Over the past five years, EPA SDWIS records 2 health-based violations — a small cluster that warrants attention.

Monitoring Network

EPA WQP

EPA's Water Quality Portal (WQP) aggregates monitoring data from federal, state, and tribal agencies. Hudson County has moderate coverage with 29 active monitoring sites with 24,212 recent measurements on record. Predominant monitoring categories include physical and microbiological. More monitoring sites generally indicate greater scientific attention to local water conditions — and provide the baseline data that regulators use to set future impairment listings.

Editorial advisory

What the data suggests for Hudson County

Water Verdict

Hudson County receives a good water quality assessment with a grade of A and a score of 71.1 out of 100. While the water supply is generally safe, occasional monitoring gaps or minor contaminant detections may occur.

Violation Context

Hudson County has recorded 2 health-based violations, indicating multiple instances where federal contaminant limits or treatment requirements were not met. At 0.5 violations per 100,000 people served, this rate is relatively low compared to many U.S. counties.

Consumer Guidance

Tap water in Hudson County earns a Grade A overall with a small number of isolated health violations in the recent record. Hudson County's drinking-water compliance score is 71.1 out of 100. The violation rate for Hudson County is 0.5 per 100,000 people served. These violations were likely resolved quickly; Grade A reflects a strong multi-year compliance trend. Reviewing the most recent Consumer Confidence Report will show exactly which systems were affected and what corrective action was taken. With 29 active water-quality monitoring sites in Hudson County, data coverage is strong.

Regional Context

Hudson County has better water quality than the average county in New Jersey. Its water score is 15.4 points higher than the state average, indicating stronger water system performance relative to neighboring counties.

Advisory text summarizes county-level public records and is not a replacement for your utility's current Consumer Confidence Report or direct local notices.

Contaminants & Resources

Key issues flagged in Hudson County's water environment

Official EPA Resources for Hudson County

EPA How's My Waterway

Interactive watershed health data for Hudson County

EPA ECHO: Drinking Water Systems

Search water utilities and violation records for Hudson County

Consumer Confidence Reports (NJ)

Annual water quality reports from utilities in New Jersey

Past 5 years

Water Quality Monitoring

Monitoring Sites

29

Active in the past 5 years

Measurements Recorded

24K

24,212 total readings

Most Measured

  • Physical
  • Microbiological
  • Inorganics, Minor, Metals

Categories measured most frequently

Data from the EPA Water Quality Portal (WQP), aggregating monitoring records from federal, state, and tribal sources. Each measurement represents a single sample analyzed for a specific characteristic (e.g., E. coli, pH, dissolved oxygen, nitrogen).

Free tool

Estimate Your Water Costs

Water Cost Estimate

3

3 people  ·  ~225 gal/day

Annual Total

$558

Monthly

$47

Water Bill

$558/yr

Filter Cost

$0/yr

Safety Grade for Hudson County:C — Moderate

Some violations or watershed impairment detected.

Estimates use the national average residential water rate ($0.0068/gal, EPA/AWWA 2023) and EPA WaterSense per-person consumption baseline (75 gal/person/day). Actual bills vary by utility, usage tier, and local infrastructure fees. For informational purposes only.

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Frequently Asked Questions

What is the water quality in Hudson County, New Jersey?
Hudson County, New Jersey has a drinking-water quality grade of A with a score of 71.1/100, based on EPA SDWIS compliance data. The county has 2 health-based drinking water violations over the past 5 years. Watershed health, monitoring records, and streamflow snapshots are reported separately on this page.
Are there any water violations in Hudson County?
Hudson County has 2 health-based drinking water violations recorded by the EPA over the past 5 years. Health-based violations indicate instances where contaminant levels exceeded EPA Maximum Contaminant Levels (MCLs). Violations may have been resolved — check with your local water utility for current status.
How much water-quality monitoring happens in Hudson County?
EPA's Water Quality Portal records 24,212 measurements from 29 monitoring sites in Hudson County over the past five years. The most frequently measured characteristic groups are Physical, Microbiological, Inorganics, Minor, Metals. Each measurement is a single sample analyzed for one characteristic (E. coli, pH, dissolved oxygen, etc.). High monitoring density means more scientific evidence behind any reported signal — it does not by itself indicate water quality.
How does Hudson County water compare to the New Jersey average?
Hudson County's SDWIS water quality score of 71.1/100 is higher than the New Jersey state average of 55.7. The average water quality grade across New Jersey is D, based on data from 21 counties with available SDWIS data.
Is tap water safe to drink in Hudson County?
Based on EPA SDWIS data, Hudson County has a water quality grade of A (71.1/100). This indicates good to excellent water quality with strong SDWIS compliance. The grade speaks to the public water system, not the watershed — for watershed-level concerns, see the Watershed Health zone. For the most up-to-date information, contact your local water utility or review your Consumer Confidence Report (CCR).
Does Hudson County have clean drinking water?
Hudson County has 2 health-based drinking water violations according to EPA records. With a water quality score of 71.1/100 and grade A, the county's drinking water has had some compliance issues but continues to be monitored. Note: drinking-water compliance speaks to the public water system, not necessarily to the watershed itself — check the Watershed Health zone for ATTAINS §303(d) data.
How does Hudson County rank for water quality in New Jersey?
Hudson County ranks #2 out of 21 counties in New Jersey by SDWIS water quality score (1 = best). With a score of 71.1/100, it falls in the top third of counties statewide. The ranking reflects EPA SDWIS compliance only — not watershed impairment, monitoring density, or streamflow, which are tracked separately on this page.

Counties with Similar Water Quality

Gloucester County

New Jersey

B

67.8

Water score

Cape May County

New Jersey

B

67.5

Water score

Bergen County

New Jersey

B

67.1

Water score

Data Sources

Drinking-water compliance data from the EPA Safe Drinking Water Information System (SDWIS) via the ECHO enforcement database. Scores reflect compliance history and health-based violation counts.

Water-quality monitoring counts from the EPA Water Quality Portal (WQP), federated USGS, EPA, and state agency sampling records over a rolling 5-year window.

Disclaimer: This data is informational only. It is not health, legal, or professional advice. For concerns about your specific water supply, contact your local water utility.

By Evan Brooks, Data EditorUpdated Reviewed by Evan Brooks, Data Editor

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