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Federal water data

County water report

Coweta County Water Report

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

Water grade

C

Water score

55.2

State rank

#110

of 159

Health violations

16

EPA SDWIS, 5-year lookback

Watershed impaired

45.1%

51 water bodies assessed

Monitoring sites

10

4,273 recent measurements

Live streamflow

11%

LINE CREEK NEAR SENOIA, GA

Water at a glance

Key Water Indicators for Coweta County

EPA SDWIS

Safety Grade

C

Score: 55.2 / 100

EPA SDWIS

Active Violations

16

5-year health-based lookback

EPA ATTAINS

Watershed Health

45% impaired

51 bodies assessed

USGS NWIS

Streamflow Snapshot

11% of mean

LINE CREEK NEAR SENOIA, GA

EPA WQP

Monitoring Sites

10

4,273 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.

55.2/100

Health violations

16

Health-based violations

Violations per 100K served

10.3

Population-normalized SDWIS rate

Editorial analysis

Understanding Coweta County’s Water

Drinking Water Quality Overview

EPA SDWIS

Coweta County's drinking water earned a C grade, scoring 55.2 out of 100. Over the past five years, EPA SDWIS records 16 health-based violations — a pattern that public water utilities are required to disclose and correct.

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 45.1% of assessed waterways are impaired (23 of 51 water bodies) across Coweta County's watersheds. The leading impairment causes are fecal coliform and fish bioassessments. 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 2026-05-14T14:45:00.000-04:00) puts LINE CREEK at 14.4 cfs — well below its long-term average at 11% 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. Coweta County has moderate coverage with 10 active monitoring sites with 4,273 recent measurements on record. Predominant monitoring categories include physical and nutrient. 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 Coweta County

Water Verdict

Coweta County receives a fair water quality assessment with a grade of C and a score of 55.2 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

Coweta County has recorded 16 health-based violations, indicating multiple instances where federal contaminant limits or treatment requirements were not met. At 10.3 violations per 100,000 people served, this rate is high and signals significant water quality management issues.

Consumer Guidance

Tap water in Coweta County meets baseline standards but the compliance record shows room for improvement, with a Grade C rating. Coweta County's drinking-water compliance score is 55.2 out of 100. The violation rate for Coweta County is 10.3 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. Fecal Coliform is the leading impairment cause in Coweta County's watershed. There are 10 active water-quality monitoring sites in Coweta County. A pipeline streamflow snapshot from the LINE CREEK gauge is also available on this page.

Regional Context

Coweta County has poorer water quality than the average county in Georgia. Its water score is 9.2 points lower than the state average, suggesting more challenges with contamination control or infrastructure than 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 Coweta County's water environment

Watershed Impairment Causes (EPA ATTAINS)

  • 1

    Fecal coliform bacteria

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

  • 2

    Fish Bioassessments

    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 Coweta County

EPA How's My Waterway

Interactive watershed health data for Coweta County

EPA ECHO: Drinking Water Systems

Search water utilities and violation records for Coweta County

Consumer Confidence Reports (GA)

Annual water quality reports from utilities in Georgia

Clean Water Act §303(d)

Watershed Health

Impaired Water Bodies

45.1%

23 of 51 assessed

Moderate concern

Top Impairment Causes

  • 1

    FECAL COLIFORM

  • 2

    FISH BIOASSESSMENTS

  • 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

10

Active in the past 5 years

Measurements Recorded

4.3K

4,273 total readings

Most Measured

  • Physical
  • Nutrient
  • 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).

Live USGS Streamgage

River & Stream Conditions

Current Discharge

14.4cfs

May 14, 6:45 PM UTC

vs Long-Term Average

11%

Well below typical

Primary Streamgage

LINE CREEK NEAR SENOIA, GA

USGS site
02344700
Drainage area
101 sq mi
Long-term mean
126 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.

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 Coweta 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 Coweta County, Georgia?
Coweta County, Georgia has a drinking-water quality grade of C with a score of 55.2/100, based on EPA SDWIS compliance data. The county has 16 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 Coweta County?
Coweta County has 16 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 healthy are the watersheds in Coweta County?
EPA ATTAINS assessments under Clean Water Act §303(d) indicate 45.1% of Coweta County's 51 assessed water bodies are classified as impaired (23 impaired). The top reported causes are FECAL COLIFORM, FISH BIOASSESSMENTS, 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 Coweta County?
EPA's Water Quality Portal records 4,273 measurements from 10 monitoring sites in Coweta County over the past five years. The most frequently measured characteristic groups are Physical, Nutrient, 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.
What's happening with rivers in Coweta County right now?
Coweta County's primary USGS streamgage on the LINE CREEK has a pipeline snapshot of 14.4 cubic feet per second — 11% of the long-term mean of 126.3 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 Coweta County water compare to the Georgia average?
Coweta County's SDWIS water quality score of 55.2/100 is lower 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 Coweta County?
Based on EPA SDWIS data, Coweta County has a water quality grade of C (55.2/100). 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).
Why does Coweta County have so many water violations?
Coweta County has 16 health-based drinking water violations on record from the EPA SDWIS database. A higher violation count can result from aging infrastructure, underfunded water utilities, agricultural runoff contamination, or industrial pollution. Counties with more water systems may also see more violations simply due to scale. Residents concerned about water quality should consider independent water testing and home filtration systems.
How does Coweta County rank for water quality in Georgia?
Coweta County ranks #110 out of 159 counties in Georgia by SDWIS water quality score (1 = best). With a score of 55.2/100, it falls in the bottom 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

Lee County

Georgia

C

54.1

Water score

Jefferson County

Georgia

C

57.7

Water score

Meriwether County

Georgia

C

58.4

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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