PlainWater
States → Tennessee

Community Water System · PWS TN0000770

Maury Co Water System

Columbia, Tennessee 38402 - drinking water served from surface water sources to 24,488 people, tracked in EPA SDWIS and UCMR5.

24,488
People served
53
EPA violations
36
Health-based
6 PFAS
UCMR5 result

The verdict

EPA records 53 drinking-water violations at Maury Co Water System, 68% of them health-based - below the Tennessee per-system average, and UCMR5 testing detected 6 PFAS compounds.

53
Total EPA violations on record
68%
Health-based (MCL / treatment failure)
24,488
People served by this system
6
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Maury Co Water System

Maury Co Water System is a local-owned community water system that delivers drinking water to 24,488 residents in Columbia, Tennessee (Maury County) through 9,206 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 53 total violations for this system , of which 36 (68%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 10 monitoring and reporting violations are on file. The most recent violation on record dates to 2019.

The most frequently cited contaminant at this system is Total Haloacetic Acids (HAA5), recorded in 32 violations (MCL, health-based). Under EPA's UCMR5 PFAS monitoring program, 6 PFAS compounds were detected in samples collected from this system, with a maximum reported concentration of 7.2 ppt (parts per trillion). PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

Across Tennessee, EPA tracks 762 public water systems serving 7,934,203 people, with 43,318 cumulative violations and 9,414 health-based violations on record. About 94% of systems in the state carry at least one violation, and state-wide the average per system is 56.8 violations. Statewide, 93 of 277 UCMR5-tested systems have reported PFAS detections (33.6%).

Maury Co Water System's 53 violations sit below the Tennessee average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

PFAS Detected

6 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
24,488
Total Violations
53
Health-Based Violations
36
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
9,206
County
Maury
School/Daycare
No
MCL Violations
36
Monitoring Violations
10
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Total Haloacetic Acids (HAA5) MCL 32 2012
Chlorine MR 7 2011
Coliform (TCR) MCL 4 2003
Coliform (TCR) MR 3 2011
Consumer Confidence Rule Other 2 2019
Public Notice Other 1 2012

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 15 of 232 samples detected PFAS.

Contaminant Date Result MRL Status
11Cl-PF3OUdS 9/13/2023 <5.00 ppt 5.00 ppt Not Detected
PFUnA 9/13/2023 <2.00 ppt 2.00 ppt Not Detected
PFHxA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFDA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFOA 9/13/2023 <4.00 ppt 4.00 ppt Not Detected
PFOS 9/13/2023 <4.00 ppt 4.00 ppt Not Detected
9Cl-PF3ONS 9/13/2023 <2.00 ppt 2.00 ppt Not Detected
PFHxS 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFNA 9/13/2023 <4.00 ppt 4.00 ppt Not Detected
ADONA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 9/13/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 9/13/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeA 9/13/2023 3.50 ppt 3.00 ppt Detected
PFEESA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
NFDHA 9/13/2023 <20.00 ppt 20.00 ppt Not Detected
PFPeS 9/13/2023 <4.00 ppt 4.00 ppt Not Detected
PFHpS 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFBS 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 9/13/2023 <5.00 ppt 5.00 ppt Not Detected
PFMPA 9/13/2023 <4.00 ppt 4.00 ppt Not Detected
NEtFOSAA 9/13/2023 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 9/13/2023 <7.00 ppt 7.00 ppt Not Detected
PFTA 9/13/2023 <8.00 ppt 8.00 ppt Not Detected
8:2 FTS 9/13/2023 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 9/13/2023 <6.00 ppt 6.00 ppt Not Detected
PFDA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFBA 9/13/2023 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 9/13/2023 <5.00 ppt 5.00 ppt Not Detected
PFHpA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
ADONA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
11Cl-PF3OUdS 9/13/2023 <5.00 ppt 5.00 ppt Not Detected
PFUnA 9/13/2023 <2.00 ppt 2.00 ppt Not Detected
PFHxA 9/13/2023 3.00 ppt 3.00 ppt Detected
PFOS 9/13/2023 <4.00 ppt 4.00 ppt Not Detected
PFHxS 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFBS 9/13/2023 3.10 ppt 3.00 ppt Detected
PFOA 9/13/2023 <4.00 ppt 4.00 ppt Not Detected
9Cl-PF3ONS 9/13/2023 <2.00 ppt 2.00 ppt Not Detected
NMeFOSAA 9/13/2023 <6.00 ppt 6.00 ppt Not Detected
6:2 FTS 9/13/2023 <5.00 ppt 5.00 ppt Not Detected
PFDoA 9/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 9/13/2023 <4.00 ppt 4.00 ppt Not Detected
PFNA 9/13/2023 <4.00 ppt 4.00 ppt Not Detected
NEtFOSAA 9/13/2023 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 9/13/2023 <7.00 ppt 7.00 ppt Not Detected
PFHpS 9/13/2023 <3.00 ppt 3.00 ppt Not Detected

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Maury Co Water System.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID TN0000770 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Tennessee Drinking Water Authority

Tennessee Department of Environment & Conservation, Drinking Water is the primacy agency that licenses and inspects Maury Co Water System under EPA-delegated authority.

Open TN regulator portal

Source: Tennessee Department of Environment & Conservation, Drinking Water

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2019 Consumer Confidence Rule Other 2 SDWIS / TN0000770 / 7000
2012 Total Haloacetic Acids (HAA5) MCL 32 SDWIS / TN0000770 / 2456
2012 Public Notice Other 1 SDWIS / TN0000770 / 7500
2011 Chlorine MR 7 SDWIS / TN0000770 / 0999
2011 Coliform (TCR) MR 3 SDWIS / TN0000770 / 3100
2003 Coliform (TCR) MCL 4 SDWIS / TN0000770 / 3100

How Maury Co Water System Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Maury Co Water System Tennessee avg Federal benchmark
Total violations 53 56.8 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 36 12.4 Indicates a contaminant exceeded a federal MCL
PFAS detection 6 compounds 33.6% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 24,488 10,412 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 762 regulated public water systems in Tennessee.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Maury Co Water System water safe to drink? ▼
Maury Co Water System (PWS ID: TN0000770) has 53 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 6 PFAS compounds found. This system serves 24,488 people using Surface Water sources.
How many people does Maury Co Water System serve? ▼
Maury Co Water System serves 24,488 people in Columbia, Tennessee. It is a Local-owned system using Surface Water water sources with 9,206 service connections.
What type of violations does Maury Co Water System have? ▼
Maury Co Water System has 53 total violations: 36 health-based violations (MCL exceedances or treatment failures), 10 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Maury Co Water System water? ▼
Yes. UCMR5 testing detected 6 PFAS compounds in Maury Co Water System's water supply: PFPeA, PFHxA, PFBS, PFOS, PFOA, and others. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does Maury Co Water System use? ▼
Maury Co Water System uses Surface Water as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.