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Community Water System · PWS TN0000286

Harpeth Valley U.d.

Nashville, Tennessee 37221 - drinking water served from surface water sources to 64,359 people, tracked in EPA SDWIS and UCMR5.

64,359
People served
38
EPA violations
8
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 38 drinking-water violations at Harpeth Valley U.d., 21% of them health-based - below the Tennessee per-system average.

38
Total EPA violations on record
21%
Health-based (MCL / treatment failure)
64,359
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Harpeth Valley U.d.

Harpeth Valley U.d. is a local-owned community water system that delivers drinking water to 64,359 residents in Nashville, Tennessee (Davidson County) through 27,861 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 38 total violations for this system , of which 8 (21%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 17 monitoring and reporting violations are on file. The most recent violation on record dates to 2018.

The most frequently cited contaminant at this system is Interim Enhanced Surface Water Treatment Rule, recorded in 16 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%).

Harpeth Valley U.d.'s 38 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
64,359
Total Violations
38
Health-Based Violations
8
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
27,861
County
Davidson
School/Daycare
No
MCL Violations
0
Monitoring Violations
17
Treatment Tech Violations
8

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Interim Enhanced Surface Water Treatment Rule MR 16 2006
Interim Enhanced Surface Water Treatment Rule Other 8 2017
Interim Enhanced Surface Water Treatment Rule TT 8 2010
Consumer Confidence Rule Other 2 2008
Public Notice Other 1 2018
Coliform (TCR) MR 1 1990

PFAS Testing Results (UCMR5)

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

Contaminant Date Result MRL Status
PFDA 8/8/2023 <3.00 ppt 3.00 ppt Not Detected
PFOS 8/8/2023 <4.00 ppt 4.00 ppt Not Detected
PFNA 8/8/2023 <4.00 ppt 4.00 ppt Not Detected
PFHxS 8/8/2023 <3.00 ppt 3.00 ppt Not Detected
PFOA 8/8/2023 <4.00 ppt 4.00 ppt Not Detected
PFBS 8/8/2023 <3.00 ppt 3.00 ppt Not Detected
NMeFOSAA 8/8/2023 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 8/8/2023 <5.00 ppt 5.00 ppt Not Detected
PFTA 8/8/2023 <8.00 ppt 8.00 ppt Not Detected
PFHpA 8/8/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 8/8/2023 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 8/8/2023 <7.00 ppt 7.00 ppt Not Detected
PFPeA 8/8/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 8/8/2023 <4.00 ppt 4.00 ppt Not Detected
NFDHA 8/8/2023 <20.00 ppt 20.00 ppt Not Detected
PFEESA 8/8/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxA 8/8/2023 <3.00 ppt 3.00 ppt Not Detected
PFBA 8/8/2023 <5.00 ppt 5.00 ppt Not Detected
PFHpS 8/8/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 8/8/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 8/8/2023 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 8/8/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 8/8/2023 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 8/8/2023 <5.00 ppt 5.00 ppt Not Detected
ADONA 8/8/2023 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 8/8/2023 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 8/8/2023 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 8/8/2023 <5.00 ppt 5.00 ppt Not Detected
PFUnA 8/8/2023 <2.00 ppt 2.00 ppt Not Detected
PFHpA 5/15/2023 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 5/15/2023 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 5/15/2023 <5.00 ppt 5.00 ppt Not Detected
PFUnA 5/15/2023 <2.00 ppt 2.00 ppt Not Detected
PFHxA 5/15/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 5/15/2023 <3.00 ppt 3.00 ppt Not Detected
PFDA 5/15/2023 <3.00 ppt 3.00 ppt Not Detected
PFOA 5/15/2023 <4.00 ppt 4.00 ppt Not Detected
PFOS 5/15/2023 <4.00 ppt 4.00 ppt Not Detected
PFHxS 5/15/2023 <3.00 ppt 3.00 ppt Not Detected
PFTA 5/15/2023 <8.00 ppt 8.00 ppt Not Detected
PFBS 5/15/2023 <3.00 ppt 3.00 ppt Not Detected
NFDHA 5/15/2023 <20.00 ppt 20.00 ppt Not Detected
ADONA 5/15/2023 <3.00 ppt 3.00 ppt Not Detected
PFNA 5/15/2023 <4.00 ppt 4.00 ppt Not Detected
PFPeS 5/15/2023 <4.00 ppt 4.00 ppt Not Detected
PFTrDA 5/15/2023 <7.00 ppt 7.00 ppt Not Detected
NMeFOSAA 5/15/2023 <6.00 ppt 6.00 ppt Not Detected
PFMBA 5/15/2023 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 5/15/2023 <5.00 ppt 5.00 ppt Not Detected
NEtFOSAA 5/15/2023 <5.00 ppt 5.00 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 Harpeth Valley U.d..

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 TN0000286 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 Harpeth Valley U.d. 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
2018 Public Notice Other 1 SDWIS / TN0000286 / 7500
2017 Interim Enhanced Surface Water Treatment Rule Other 8 SDWIS / TN0000286 / 0300
2010 Interim Enhanced Surface Water Treatment Rule TT 8 SDWIS / TN0000286 / 0300
2008 Consumer Confidence Rule Other 2 SDWIS / TN0000286 / 7000
2006 Interim Enhanced Surface Water Treatment Rule MR 16 SDWIS / TN0000286 / 0300
1990 Coliform (TCR) MR 1 SDWIS / TN0000286 / 3100

How Harpeth Valley U.d. Compares

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

Metric Harpeth Valley U.d. Tennessee avg Federal benchmark
Total violations 38 56.8 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 8 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 64,359 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 Harpeth Valley U.d. water safe to drink? ▼
Harpeth Valley U.d. (PWS ID: TN0000286) has 38 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 64,359 people using Surface Water sources.
How many people does Harpeth Valley U.d. serve? ▼
Harpeth Valley U.d. serves 64,359 people in Nashville, Tennessee. It is a Local-owned system using Surface Water water sources with 27,861 service connections.
What type of violations does Harpeth Valley U.d. have? ▼
Harpeth Valley U.d. has 38 total violations: 8 health-based violations (MCL exceedances or treatment failures), 17 monitoring/reporting violations, and 8 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Harpeth Valley U.d. water? ▼
No. Harpeth Valley U.d. was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Harpeth Valley U.d. use? ▼
Harpeth Valley U.d. 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.