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County water report

Effingham County Water Report

Drinking-water compliance, watershed health, monitoring records, and river conditions for Effingham County, Georgia.

Water grade

A

Water score

86.0

State rank

#35

of 159

Health violations

0

EPA SDWIS, 5-year lookback

Watershed impaired

48.0%

25 water bodies assessed

Monitoring sites

4

3,397 recent measurements

Live streamflow

47%

SAVANNAH RIVER NEAR CLYO, GA

Water at a glance

Key Water Indicators for Effingham County

EPA SDWIS

Safety Grade

A

Score: 86.0 / 100

EPA SDWIS

Active Violations

0

5-year health-based lookback

EPA ATTAINS

Watershed Health

48% impaired

25 bodies assessed

USGS NWIS

Streamflow Snapshot

47% of mean

SAVANNAH RIVER NEAR CLYO, GA

EPA WQP

Monitoring Sites

4

3,397 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.

86.0/100

Health violations

0

Health-based violations

Violations per 100K served

0.0

Population-normalized SDWIS rate

Editorial analysis

Understanding Effingham County’s Water

Drinking Water Quality Overview

EPA SDWIS

Effingham County earns an A grade for drinking water quality, scoring 86.0 out of 100. EPA's Safe Drinking Water Information System (SDWIS) records zero health-based violations over the past five years — a strong compliance signal for a small county.

Watershed Conditions

EPA ATTAINS

Under the Clean Water Act §303(d), EPA ATTAINS tracks whether waterways meet quality standards for drinking, recreation, and aquatic life (reporting cycle: 2022). A substantial 48.0% of assessed waterways are impaired (12 of 25 water bodies) across Effingham County's watersheds. The leading impairment causes are mercury in fish tissue and fecal coliform. Impairment does not mean tap water is unsafe — it measures ambient waterway conditions upstream of treatment, not finished drinking water.

River & Streamflow Status

USGS NWIS

USGS NWIS gauge data (as of 2026-05-14T14:15:00.000-04:00) puts SAVANNAH RIVER at 5.3k cfs — well below its long-term average at 47% of mean — low-flow conditions worth noting for water-dependent ecosystems. Streamflow is a leading indicator of drought stress, sediment load, and dilution capacity: low flows concentrate pollutants and warm water temperatures, stressing aquatic life and, in surface-water-dependent systems, the source water quality for treatment plants.

Monitoring Network

EPA WQP

EPA's Water Quality Portal (WQP) aggregates monitoring data from federal, state, and tribal agencies. Effingham County has limited coverage with 4 active monitoring sites with 3,397 recent measurements on record. Predominant monitoring categories include physical and inorganics, major, non-metals. 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 Effingham County

Water Verdict

Effingham County, Georgia receives an excellent water quality assessment with a grade of A and a score of 86.0 out of 100. The water supply meets or exceeds federal safety standards, and residents can generally drink tap water with confidence. Separately, EPA ATTAINS assessments cover 25 water bodies in the county's watershed, with 48.0% listed as impaired under the Clean Water Act — a source-water measure that is tracked independently of tap-water compliance. At the most recent USGS reading, local streamflow was below its historical mean at 47.4% — worth watching in drier seasons.

Violation Context

EPA SDWIS records for Effingham County, Georgia show zero health-based violations, indicating that the county's water systems met all federal safety standards during the reporting period. The violation rate is zero per 100,000 people served, which is the best possible outcome. For independent context, 3,397 water-quality monitoring results have been recorded across the county in the EPA Water Quality Portal over the past five years.

Consumer Guidance

Tap water in Effingham County has a clean compliance record with no health-based violations detected. Effingham County's drinking-water compliance score is 86.0 out of 100. Mercury appears as a watershed impairment cause, which typically reflects fish-tissue accumulation rather than tap-water exposure. If you consume locally caught fish, consult your state's fish advisory. For drinking water, the current record supports confidence in the tap. There are 4 active water-quality monitoring sites in Effingham County. A pipeline streamflow snapshot from the SAVANNAH RIVER gauge is also available on this page.

Regional Context

Effingham County has better water quality than the average county in Georgia. Its water score is 21.6 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 Effingham County's water environment

Watershed Impairment Causes (EPA ATTAINS)

  • 1

    Mercury (fish tissue)

    Impairment cause per EPA Clean Water Act §303(d) assessment

  • 2

    Fecal coliform bacteria

    Impairment cause per EPA Clean Water Act §303(d) assessment

  • 3

    Pcbs in Fish Tissue

    Impairment cause per EPA Clean Water Act §303(d) assessment

Source: EPA ATTAINS · Reporting cycle 2022

Official EPA Resources for Effingham County

EPA How's My Waterway

Interactive watershed health data for Effingham County

EPA ECHO: Drinking Water Systems

Search water utilities and violation records for Effingham County

Consumer Confidence Reports (GA)

Annual water quality reports from utilities in Georgia

Clean Water Act §303(d)

Watershed Health

Impaired Water Bodies

48.0%

12 of 25 assessed

Moderate concern

Top Impairment Causes

  • 1

    MERCURY IN FISH TISSUE

  • 2

    FECAL COLIFORM

  • 3

    PCBS IN FISH TISSUE

Source: EPA ATTAINS · Reporting cycle 2022

Impairment is determined under the Clean Water Act §303(d): a water body is impaired when it fails to meet state-defined quality standards for designated uses (drinking, recreation, aquatic life). Assessment coverage varies by state; counties without assessed water bodies are not shown.

Past 5 years

Water Quality Monitoring

Monitoring Sites

4

Active in the past 5 years

Measurements Recorded

3.4K

3,397 total readings

Most Measured

  • Physical
  • Inorganics, Major, Non-metals
  • Nutrient

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).

Live USGS Streamgage

River & Stream Conditions

Current Discharge

5,330cfs

May 14, 6:15 PM UTC

vs Long-Term Average

47%

Well below typical

Primary Streamgage

SAVANNAH RIVER NEAR CLYO, GA

USGS site
02198500
Drainage area
9,850 sq mi
Long-term mean
11.2K cfs

One representative streamgage (the one with the largest drainage area in the county). Many counties have multiple gauges; this view summarizes the primary one. The long-term mean is the full-record annual average; the percent-of-typical value compares the latest reading against that average.

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Water Cost Estimate

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Annual Total

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Monthly

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Filter Cost

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Safety Grade for Effingham 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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Effingham County has good water quality

Learn about water restrictions and conservation in your area.

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Frequently Asked Questions

What is the water quality in Effingham County, Georgia?
Effingham County, Georgia has a drinking-water quality grade of A with a score of 86.0/100, based on EPA SDWIS compliance data. The county has 0 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 Effingham County?
Effingham County has 0 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). Zero violations is an excellent record indicating consistent compliance with federal drinking water standards.
How healthy are the watersheds in Effingham County?
EPA ATTAINS assessments under Clean Water Act §303(d) indicate 48.0% of Effingham County's 25 assessed water bodies are classified as impaired (12 impaired). The top reported causes are MERCURY IN FISH TISSUE, FECAL COLIFORM, PCBS IN FISH TISSUE. Impairment means the water body fails to meet state quality standards for at least one designated use — drinking water source, recreation, aquatic life, or fish consumption. Note: watershed impairment doesn't always translate to tap-water issues; treatment plants can remove most regulated contaminants.
How much water-quality monitoring happens in Effingham County?
EPA's Water Quality Portal records 3,397 measurements from 4 monitoring sites in Effingham County over the past five years. The most frequently measured characteristic groups are Physical, Inorganics, Major, Non-metals, Nutrient. 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.
What's happening with rivers in Effingham County right now?
Effingham County's primary USGS streamgage on the SAVANNAH RIVER has a pipeline snapshot of 5,330 cubic feet per second — 47% of the long-term mean of 11,237.52 cfs. This is well below typical — often a signal of drought stress on source water. For the latest gauge feed, visit waterdata.usgs.gov.
How does Effingham County water compare to the Georgia average?
Effingham County's SDWIS water quality score of 86.0/100 is higher than the Georgia state average of 64.4. The average water quality grade across Georgia is C, based on data from 159 counties with available SDWIS data.
Is tap water safe to drink in Effingham County?
Based on EPA SDWIS data, Effingham County has a water quality grade of A (86.0/100). 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 Effingham County have clean drinking water?
Effingham County has 0 health-based drinking water violations according to EPA records. With a water quality score of 86.0/100 and grade A, the county's drinking water meets EPA standards with no recorded health violations. 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 Effingham County rank for water quality in Georgia?
Effingham County ranks #35 out of 159 counties in Georgia by SDWIS water quality score (1 = best). With a score of 86.0/100, 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

Appling County

Georgia

A

86.0

Water score

Bacon County

Georgia

A

86.0

Water score

Baker County

Georgia

A

86.0

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.

Watershed health and impaired-waterway data from the EPA ATTAINS Clean Water Act §303(d) assessments, state-reported and EPA-finalized.

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.

Live streamflow from the USGS National Water Information System (NWIS), continuous discharge measurements from the largest-drainage gauge in each county, compared against the full-record long-term annual mean.

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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