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Federal water data

County water report

Robertson County Water Report

Drinking-water compliance, watershed health, monitoring records, and river conditions for Robertson County, Tennessee.

Water grade

C

Water score

53.4

State rank

#76

of 95

Health violations

7

EPA SDWIS, 5-year lookback

Watershed impaired

31.7%

82 water bodies assessed

Monitoring sites

37

5,383 recent measurements

Live streamflow

No gauge

Primary USGS station not mapped

Water at a glance

Key Water Indicators for Robertson County

EPA SDWIS

Safety Grade

C

Score: 53.4 / 100

EPA SDWIS

Active Violations

7

5-year health-based lookback

EPA ATTAINS

Watershed Health

32% impaired

82 bodies assessed

USGS NWIS

Streamflow Snapshot

No gauge

Primary USGS gauge not mapped

EPA WQP

Monitoring Sites

37

5,383 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.

53.4/100

Health violations

7

Health-based violations

Violations per 100K served

12.0

Population-normalized SDWIS rate

Editorial analysis

Understanding Robertson County’s Water

Drinking Water Quality Overview

EPA SDWIS

Robertson County's drinking water earned a C grade, scoring 53.4 out of 100. Over the past five years, EPA SDWIS records 7 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 31.7% of assessed waterways are impaired (26 of 82 water bodies) across Robertson County's watersheds. The leading impairment causes are sedimentation/siltation and escherichia coli (e. coli). Impairment does not mean tap water is unsafe — it measures ambient waterway conditions upstream of treatment, not finished drinking water.

Monitoring Network

EPA WQP

EPA's Water Quality Portal (WQP) aggregates monitoring data from federal, state, and tribal agencies. Robertson County has moderate coverage with 37 active monitoring sites with 5,383 recent measurements on record. Predominant monitoring categories include physical and inorganics, minor, 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 Robertson County

Water Verdict

Robertson County, Tennessee receives a below-average water quality assessment with a grade of C and a score of 53.4 out of 100. Residents should review their utility's Consumer Confidence Report and may want to consider additional water filtration for drinking. Separately, EPA ATTAINS assessments cover 82 water bodies in the county's watershed, with 31.7% listed as impaired under the Clean Water Act — a source-water measure that is tracked independently of tap-water compliance.

Violation Context

EPA SDWIS records for Robertson County, Tennessee show 7 health-based violations, indicating multiple instances where federal contaminant limits or treatment requirements were not met. At 12.0 violations per 100,000 people served, this rate is high and signals significant water quality management issues. For independent context, 5,383 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 Robertson County meets baseline standards but the compliance record shows room for improvement, with a Grade C rating. Robertson County's drinking-water compliance score is 53.4 out of 100. The violation rate for Robertson County is 12.0 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. Sedimentation/Siltation is the leading impairment cause in Robertson County's watershed. With 37 active water-quality monitoring sites in Robertson County, data coverage is strong.

Regional Context

Robertson County has poorer water quality than the average county in Tennessee. Its water score is 17.9 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 Robertson County's water environment

Watershed Impairment Causes (EPA ATTAINS)

  • 1

    Sedimentation and siltation

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

  • 2

    E. coli (bacteria)

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

  • 3

    Alteration in Stream-Side Or Littoral Vegetative Covers

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

Source: EPA ATTAINS · Reporting cycle 2022

Official EPA Resources for Robertson County

EPA How's My Waterway

Interactive watershed health data for Robertson County

EPA ECHO: Drinking Water Systems

Search water utilities and violation records for Robertson County

Consumer Confidence Reports (TN)

Annual water quality reports from utilities in Tennessee

Clean Water Act §303(d)

Watershed Health

Impaired Water Bodies

31.7%

26 of 82 assessed

Moderate concern

Top Impairment Causes

  • 1

    SEDIMENTATION/SILTATION

  • 2

    ESCHERICHIA COLI (E. COLI)

  • 3

    ALTERATION IN STREAM-SIDE OR LITTORAL VEGETATIVE COVERS

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

37

Active in the past 5 years

Measurements Recorded

5.4K

5,383 total readings

Most Measured

  • Physical
  • Inorganics, Minor, 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).

Free tool

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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 Robertson 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 Robertson County, Tennessee?
Robertson County, Tennessee has a drinking-water quality grade of C with a score of 53.4/100, based on EPA SDWIS compliance data. The county has 7 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 Robertson County?
Robertson County has 7 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 Robertson County?
EPA ATTAINS assessments under Clean Water Act §303(d) indicate 31.7% of Robertson County's 82 assessed water bodies are classified as impaired (26 impaired). The top reported causes are SEDIMENTATION/SILTATION, ESCHERICHIA COLI (E. COLI), ALTERATION IN STREAM-SIDE OR LITTORAL VEGETATIVE COVERS. 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 Robertson County?
EPA's Water Quality Portal records 5,383 measurements from 37 monitoring sites in Robertson County over the past five years. The most frequently measured characteristic groups are Physical, Inorganics, Minor, 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.
How does Robertson County water compare to the Tennessee average?
Robertson County's SDWIS water quality score of 53.4/100 is lower than the Tennessee state average of 71.3. The average water quality grade across Tennessee is C, based on data from 95 counties with available SDWIS data.
Is tap water safe to drink in Robertson County?
Based on EPA SDWIS data, Robertson County has a water quality grade of C (53.4/100). 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 Robertson County have so many water violations?
Robertson County has 7 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 Robertson County rank for water quality in Tennessee?
Robertson County ranks #76 out of 95 counties in Tennessee by SDWIS water quality score (1 = best). With a score of 53.4/100, 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

Montgomery County

Tennessee

C

55.1

Water score

Union County

Tennessee

D

50.5

Water score

Wilson County

Tennessee

C

57.2

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.

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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