PlainWater

Community Water System · PWS TN0000522

Oak Ridge Dept of Public Works

Oak Ridge, Tennessee 37831 - drinking water served from surface water sources to 41,614 people, tracked in EPA SDWIS and UCMR5.

41,614
People served
26
EPA violations
4
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 26 drinking-water violations at Oak Ridge Dept of Public Works, 15% of them health-based - below the Tennessee per-system average.

26
Total EPA violations on record
15%
Health-based (MCL / treatment failure)
41,614
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Oak Ridge Dept of Public Works

Oak Ridge Dept of Public Works is a local-owned community water system that delivers drinking water to 41,614 residents in Oak Ridge, Tennessee (Anderson County) through 17,125 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 26 total violations for this system , of which 4 (15%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 18 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is Atrazine, recorded in 4 violations (MR). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

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%).

Oak Ridge Dept of Public Works's 26 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.

Population Served
41,614
Total Violations
26
Health-Based Violations
4
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
17,125
County
Anderson
School/Daycare
No
MCL Violations
0
Monitoring Violations
18
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Atrazine MR 4 2014
2,4-D MR 4 2014
Long Term 2 Enhanced Surface Water Treatment Rule TT 4 2019
Consumer Confidence Rule Other 2 2020
Interim Enhanced Surface Water Treatment Rule Other 2 2023
Coliform (TCR) MR 2 1998
Fluoride MR 1 1981
Nitrate MR 1 1981
Mercury MR 1 1981
Cadmium MR 1 1981
Arsenic MR 1 1981
Barium MR 1 1981
Selenium MR 1 1981
Chromium MR 1 1981

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 116 samples detected PFAS.

Contaminant Date Result MRL Status
PFTA 9/9/2024 <8.00 ppt 8.00 ppt Not Detected
PFTrDA 9/9/2024 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 9/9/2024 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 9/9/2024 <6.00 ppt 6.00 ppt Not Detected
PFOS 9/23/2024 <4.00 ppt 4.00 ppt Not Detected
PFBS 9/23/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpA 9/23/2024 <3.00 ppt 3.00 ppt Not Detected
PFDoA 9/23/2024 <3.00 ppt 3.00 ppt Not Detected
PFNA 9/23/2024 <4.00 ppt 4.00 ppt Not Detected
PFOA 9/23/2024 <4.00 ppt 4.00 ppt Not Detected
PFDA 9/23/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpS 9/23/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeS 9/23/2024 <4.00 ppt 4.00 ppt Not Detected
HFPO-DA 9/23/2024 <5.00 ppt 5.00 ppt Not Detected
PFHxA 9/23/2024 <3.00 ppt 3.00 ppt Not Detected
PFUnA 9/23/2024 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 9/23/2024 <5.00 ppt 5.00 ppt Not Detected
PFHxS 9/23/2024 <3.00 ppt 3.00 ppt Not Detected
ADONA 9/23/2024 <3.00 ppt 3.00 ppt Not Detected
NFDHA 9/23/2024 <20.00 ppt 20.00 ppt Not Detected
PFBA 9/23/2024 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 9/23/2024 <3.00 ppt 3.00 ppt Not Detected
PFEESA 9/23/2024 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 9/23/2024 <5.00 ppt 5.00 ppt Not Detected
PFMPA 9/23/2024 <4.00 ppt 4.00 ppt Not Detected
PFPeA 9/23/2024 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 9/23/2024 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 9/23/2024 <2.00 ppt 2.00 ppt Not Detected
PFMBA 9/23/2024 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 6/4/2024 <5.00 ppt 5.00 ppt Not Detected
PFHpA 6/4/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxS 6/4/2024 <3.00 ppt 3.00 ppt Not Detected
PFNA 6/4/2024 <4.00 ppt 4.00 ppt Not Detected
PFOS 6/4/2024 <4.00 ppt 4.00 ppt Not Detected
PFOA 6/4/2024 <4.00 ppt 4.00 ppt Not Detected
PFDA 6/4/2024 <3.00 ppt 3.00 ppt Not Detected
PFDoA 6/4/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxA 6/4/2024 <3.00 ppt 3.00 ppt Not Detected
11Cl-PF3OUdS 6/4/2024 <5.00 ppt 5.00 ppt Not Detected
ADONA 6/4/2024 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 6/4/2024 <5.00 ppt 5.00 ppt Not Detected
PFBA 6/4/2024 <5.00 ppt 5.00 ppt Not Detected
PFBS 6/4/2024 <3.00 ppt 3.00 ppt Not Detected
4:2 FTS 6/4/2024 <3.00 ppt 3.00 ppt Not Detected
PFUnA 6/4/2024 <2.00 ppt 2.00 ppt Not Detected
PFMPA 6/4/2024 <4.00 ppt 4.00 ppt Not Detected
PFPeA 6/4/2024 <3.00 ppt 3.00 ppt Not Detected
PFMBA 6/4/2024 <3.00 ppt 3.00 ppt Not Detected
PFEESA 6/4/2024 <3.00 ppt 3.00 ppt Not Detected
NFDHA 6/4/2024 <20.00 ppt 20.00 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 Oak Ridge Dept of Public Works.

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 TN0000522 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 Oak Ridge Dept of Public Works 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
2023 Interim Enhanced Surface Water Treatment Rule Other 2 SDWIS / TN0000522 / 0300
2020 Consumer Confidence Rule Other 2 SDWIS / TN0000522 / 7000
2019 Long Term 2 Enhanced Surface Water Treatment Rule TT 4 SDWIS / TN0000522 / 0800
2014 Atrazine MR 4 SDWIS / TN0000522 / 2050
2014 2,4-D MR 4 SDWIS / TN0000522 / 2105
1998 Coliform (TCR) MR 2 SDWIS / TN0000522 / 3100
1981 Fluoride MR 1 SDWIS / TN0000522 / 1025
1981 Nitrate MR 1 SDWIS / TN0000522 / 1040
1981 Mercury MR 1 SDWIS / TN0000522 / 1035
1981 Cadmium MR 1 SDWIS / TN0000522 / 1015
1981 Arsenic MR 1 SDWIS / TN0000522 / 1005
1981 Barium MR 1 SDWIS / TN0000522 / 1010
1981 Selenium MR 1 SDWIS / TN0000522 / 1045
1981 Chromium MR 1 SDWIS / TN0000522 / 1020

How Oak Ridge Dept of Public Works Compares

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

Metric Oak Ridge Dept of Public Works Tennessee avg Federal benchmark
Total violations 26 56.8 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 4 12.4 Indicates a contaminant exceeded a federal MCL
PFAS detection None 33.6% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 41,614 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 Oak Ridge Dept of Public Works water safe to drink?
Oak Ridge Dept of Public Works (PWS ID: TN0000522) has 26 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 41,614 people using Surface Water sources.
How many people does Oak Ridge Dept of Public Works serve?
Oak Ridge Dept of Public Works serves 41,614 people in Oak Ridge, Tennessee. It is a Local-owned system using Surface Water water sources with 17,125 service connections.
What type of violations does Oak Ridge Dept of Public Works have?
Oak Ridge Dept of Public Works has 26 total violations: 4 health-based violations (MCL exceedances or treatment failures), 18 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Oak Ridge Dept of Public Works water?
No. Oak Ridge Dept of Public Works was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Oak Ridge Dept of Public Works use?
Oak Ridge Dept of Public Works 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.
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.