Community Water System · PWS TN0000935

Mason Hall Development Corp

Kenton, Tennessee 38233 - drinking water served from groundwater sources to 211 people, tracked in EPA SDWIS and UCMR5.

Compiled by PlainWater Editorial, Drinking Water Quality Editorial Team · May 15, 2026

211
People served: 95
EPA violations: 6
Health-based: Untested
UCMR5 result

The verdict

EPA records 95 drinking-water violations at Mason Hall Development Corp, 6% of them health-based - above the Tennessee per-system average.

95
Total EPA violations on record: 6%
Health-based (MCL / treatment failure): 211
People served by this system: N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Mason Hall Development Corp

Mason Hall Development Corp is a private-owned community water system that delivers drinking water to 211 residents in Kenton, Tennessee (Obion County) through 82 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 95 total violations for this system , of which 6 (6%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 86 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 Coliform (TCR), recorded in 11 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

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%).

Mason Hall Development Corp's 95 violations sit above 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

211

Total Violations

Health-Based Violations

Water Source

Groundwater

System Details

System Type: Community
Owner Type: Private
Connections: 82
County: Obion
School/Daycare: No
MCL Violations: 4
Monitoring Violations: 86
Treatment Tech Violations: 2

Violation History

Contaminant violations recorded by EPA.

Contaminant	Category	Count	Latest
Coliform (TCR)	MR	11	2010
Chlorine	MR	4	2010
Coliform (TCR)	MCL	4	2013
Nitrate	MR	4	2022
Lead and Copper Rule	MR	4	1993
cis-1,2-Dichloroethylene	MR	3	2001
Xylenes, Total	MR	3	2001
DICHLOROMETHANE	MR	3	2001
p-Dichlorobenzene	MR	3	2001
1,1-Dichloroethylene	MR	3	2001
trans-1,2-Dichloroethylene	MR	3	2001
1,2-Dichloroethane	MR	3	2001
1,1,1-Trichloroethane	MR	3	2001
Carbon tetrachloride	MR	3	2001
1,2-Dichloropropane	MR	3	2001
Trichloroethylene	MR	3	2001
1,1,2-Trichloroethane	MR	3	2001
CHLOROBENZENE	MR	3	2001
Benzene	MR	3	2001
Ethylbenzene	MR	3	2001
Styrene	MR	3	2001
Consumer Confidence Rule	Other	3	2023
1,2,4-Trichlorobenzene	MR	3	2001
Tetrachloroethylene	MR	3	2001
Vinyl chloride	MR	3	2001
Toluene	MR	3	2001
o-Dichlorobenzene	MR	3	2001
Lead and Copper Rule	TT	2	1994

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 Mason Hall Development Corp.

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 TN0000935 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 Mason Hall Development Corp 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	Consumer Confidence Rule	Other	3	SDWIS / TN0000935 / 7000
2022	Nitrate	MR	4	SDWIS / TN0000935 / 1040
2013	Coliform (TCR)	MCL	4	SDWIS / TN0000935 / 3100
2010	Coliform (TCR)	MR	11	SDWIS / TN0000935 / 3100
2010	Chlorine	MR	4	SDWIS / TN0000935 / 0999
2001	cis-1,2-Dichloroethylene	MR	3	SDWIS / TN0000935 / 2380
2001	Xylenes, Total	MR	3	SDWIS / TN0000935 / 2955
2001	DICHLOROMETHANE	MR	3	SDWIS / TN0000935 / 2964
2001	p-Dichlorobenzene	MR	3	SDWIS / TN0000935 / 2969
2001	1,1-Dichloroethylene	MR	3	SDWIS / TN0000935 / 2977
2001	trans-1,2-Dichloroethylene	MR	3	SDWIS / TN0000935 / 2979
2001	1,2-Dichloroethane	MR	3	SDWIS / TN0000935 / 2980
2001	1,1,1-Trichloroethane	MR	3	SDWIS / TN0000935 / 2981
2001	Carbon tetrachloride	MR	3	SDWIS / TN0000935 / 2982
2001	1,2-Dichloropropane	MR	3	SDWIS / TN0000935 / 2983

How Mason Hall Development Corp Compares

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

Metric	Mason Hall Development Corp	Tennessee avg	Federal benchmark
Total violations	95	56.8	SDWA compliance, any non-zero count is a recorded breach
Health-based violations	6	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	211	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 Mason Hall Development Corp water safe to drink? ▼

Mason Hall Development Corp (PWS ID: TN0000935) has 95 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 211 people using Groundwater sources.

How many people does Mason Hall Development Corp serve? ▼

Mason Hall Development Corp serves 211 people in Kenton, Tennessee. It is a Private-owned system using Groundwater water sources with 82 service connections.

What type of violations does Mason Hall Development Corp have? ▼

Mason Hall Development Corp has 95 total violations: 6 health-based violations (MCL exceedances or treatment failures), 86 monitoring/reporting violations, and 2 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Has PFAS been detected in Mason Hall Development Corp water? ▼

No PFAS testing data is available for Mason Hall Development Corp under the EPA's UCMR5 monitoring program.

What water source does Mason Hall Development Corp use? ▼

Mason Hall Development Corp uses Groundwater 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. 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.