waterbycounty
Federal water data

County water report

Marshall County Water Report

Drinking-water compliance, watershed health, monitoring records, and river conditions for Marshall County, Mississippi.

Water grade

C

Water score

56.8

State rank

#38

of 82

Health violations

2

EPA SDWIS, 5-year lookback

Watershed impaired

Not reported

EPA ATTAINS coverage varies by state

Monitoring sites

11

1,173 recent measurements

Live streamflow

No gauge

Primary USGS station not mapped

Water at a glance

Key Water Indicators for Marshall County

EPA SDWIS

Safety Grade

C

Score: 56.8 / 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

11

1,173 recent readings

Source: EPA SDWIS · Safe Drinking Water Information System

Drinking Water Compliance

Compliance grade

C

Based on EPA SDWIS compliance history.

Water score

Higher scores indicate cleaner recent compliance records.

56.8/100

Health violations

2

Health-based violations

Violations per 100K served

9.0

Population-normalized SDWIS rate

Editorial analysis

Understanding Marshall County’s Water

Drinking Water Quality Overview

EPA SDWIS

Marshall County's drinking water earned a C grade, scoring 56.8 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. Marshall County has moderate coverage with 11 active monitoring sites with 1,173 recent measurements on record. Predominant monitoring categories include physical and organics, pesticide. 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 Marshall County

Water Verdict

Marshall County receives a fair water quality assessment with a grade of C and a score of 56.8 out of 100. The water supply meets baseline federal standards, but there may be periods of elevated contaminant levels or infrastructure concerns worth monitoring.

Violation Context

Marshall County has recorded 2 health-based violations, indicating multiple instances where federal contaminant limits or treatment requirements were not met. At 9.0 violations per 100,000 people served, this rate is high and signals significant water quality management issues.

Consumer Guidance

Tap water in Marshall County meets baseline standards but the compliance record shows room for improvement, with a Grade C rating. Marshall County's drinking-water compliance score is 56.8 out of 100. The violation rate for Marshall County is 9.0 per 100,000 people served. Residents who are immunocompromised, pregnant, or have young children may benefit from using an NSF 53-certified filter. Contacting your local utility for the current Consumer Confidence Report will confirm which specific violations were recorded and whether they have been resolved. With 11 active water-quality monitoring sites in Marshall County, data coverage is strong.

Regional Context

Marshall County has better water quality than the average county in Mississippi. Its water score is 5.1 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 Marshall County's water environment

Official EPA Resources for Marshall County

EPA How's My Waterway

Interactive watershed health data for Marshall County

EPA ECHO: Drinking Water Systems

Search water utilities and violation records for Marshall County

Consumer Confidence Reports (MS)

Annual water quality reports from utilities in Mississippi

Past 5 years

Water Quality Monitoring

Monitoring Sites

11

Active in the past 5 years

Measurements Recorded

1.2K

1,173 total readings

Most Measured

  • Physical
  • Organics, Pesticide
  • Organics, Other

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 Marshall County:D — Poor

Elevated violations or significant watershed impairment.

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.

Try the full calculator →

Improve your water quality at home

Berkey filters remove 99.9%+ of contaminants from tap water.

Shop Berkey →

Sponsored

Test your tap water

Tap Score provides professional mail-in water testing.

Get Tested →

Frequently Asked Questions

What is the water quality in Marshall County, Mississippi?
Marshall County, Mississippi has a drinking-water quality grade of C with a score of 56.8/100, 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 Marshall County?
Marshall 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 Marshall County?
EPA's Water Quality Portal records 1,173 measurements from 11 monitoring sites in Marshall County over the past five years. The most frequently measured characteristic groups are Physical, Organics, Pesticide, Organics, Other. 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 Marshall County water compare to the Mississippi average?
Marshall County's SDWIS water quality score of 56.8/100 is higher than the Mississippi state average of 51.7. The average water quality grade across Mississippi is D, based on data from 82 counties with available SDWIS data.
Is tap water safe to drink in Marshall County?
Based on EPA SDWIS data, Marshall County has a water quality grade of C (56.8/100). This indicates moderate compliance. Some violations have been recorded but overall standards are maintained. 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 Marshall County have clean drinking water?
Marshall County has 2 health-based drinking water violations according to EPA records. With a water quality score of 56.8/100 and grade C, 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 Marshall County rank for water quality in Mississippi?
Marshall County ranks #38 out of 82 counties in Mississippi by SDWIS water quality score (1 = best). With a score of 56.8/100, it falls in the middle 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

Jackson County

Mississippi

C

56.6

Water score

Itawamba County

Mississippi

C

57.2

Water score

Lawrence County

Mississippi

C

57.5

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

Explore more data for Marshall County

Property TaxCost of LivingCrime RateIncomeHealthSchoolsDisaster RiskWeatherCounty Score