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Non-Transient Non-Community Water System · PWS TN0004314

Cemex Const Materials Atl, LLC

Knoxville, Tennessee 37924 - drinking water served from groundwater sources to 120 people, tracked in EPA SDWIS and UCMR5.

120
People served
98
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 98 drinking-water violations at Cemex Const Materials Atl, LLC - above the Tennessee per-system average.

98
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
120
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Cemex Const Materials Atl, LLC

Cemex Const Materials Atl, LLC is a private-owned non-transient non-community water system that delivers drinking water to 120 residents in Knoxville, Tennessee (Knox County) through 5 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 98 total violations for this system , of which 0 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 90 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 1,2,4-Trichlorobenzene, recorded in 4 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%).

Cemex Const Materials Atl, LLC's 98 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
120
Total Violations
98
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
5
County
Knox
School/Daycare
No
MCL Violations
0
Monitoring Violations
90
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
1,2,4-Trichlorobenzene MR 4 2020
cis-1,2-Dichloroethylene MR 4 2020
Xylenes, Total MR 4 2020
p-Dichlorobenzene MR 4 2020
Vinyl chloride MR 4 2020
1,1-Dichloroethylene MR 4 2020
Carbon tetrachloride MR 4 2020
1,2-Dichloropropane MR 4 2020
Trichloroethylene MR 4 2020
1,1,2-Trichloroethane MR 4 2020
CHLOROBENZENE MR 4 2020
Toluene MR 4 2020
Tetrachloroethylene MR 4 2020
Styrene MR 4 2020
Benzene MR 4 2020
1,1,1-Trichloroethane MR 4 2020
1,2-Dichloroethane MR 4 2020
Ethylbenzene MR 4 2020
o-Dichlorobenzene MR 4 2020
trans-1,2-Dichloroethylene MR 4 2020
DICHLOROMETHANE MR 4 2020
Coliform (TCR) MR 3 1995
Atrazine MR 2 2023
Nitrate MR 1 1978

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 Cemex Const Materials Atl, LLC.

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 TN0004314 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 Cemex Const Materials Atl, LLC 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 Atrazine MR 2 SDWIS / TN0004314 / 2050
2020 1,2,4-Trichlorobenzene MR 4 SDWIS / TN0004314 / 2378
2020 cis-1,2-Dichloroethylene MR 4 SDWIS / TN0004314 / 2380
2020 Xylenes, Total MR 4 SDWIS / TN0004314 / 2955
2020 p-Dichlorobenzene MR 4 SDWIS / TN0004314 / 2969
2020 Vinyl chloride MR 4 SDWIS / TN0004314 / 2976
2020 1,1-Dichloroethylene MR 4 SDWIS / TN0004314 / 2977
2020 Carbon tetrachloride MR 4 SDWIS / TN0004314 / 2982
2020 1,2-Dichloropropane MR 4 SDWIS / TN0004314 / 2983
2020 Trichloroethylene MR 4 SDWIS / TN0004314 / 2984
2020 1,1,2-Trichloroethane MR 4 SDWIS / TN0004314 / 2985
2020 CHLOROBENZENE MR 4 SDWIS / TN0004314 / 2989
2020 Toluene MR 4 SDWIS / TN0004314 / 2991
2020 Tetrachloroethylene MR 4 SDWIS / TN0004314 / 2987
2020 Styrene MR 4 SDWIS / TN0004314 / 2996

How Cemex Const Materials Atl, LLC Compares

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

Metric Cemex Const Materials Atl, LLC Tennessee avg Federal benchmark
Total violations 98 56.8 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 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 120 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 Cemex Const Materials Atl, LLC water safe to drink? ▼
Cemex Const Materials Atl, LLC (PWS ID: TN0004314) has 98 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 120 people using Groundwater sources.
How many people does Cemex Const Materials Atl, LLC serve? ▼
Cemex Const Materials Atl, LLC serves 120 people in Knoxville, Tennessee. It is a Private-owned system using Groundwater water sources with 5 service connections.
What type of violations does Cemex Const Materials Atl, LLC have? ▼
Cemex Const Materials Atl, LLC has 98 total violations: 0 health-based violations (MCL exceedances or treatment failures), 90 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Cemex Const Materials Atl, LLC water? ▼
No PFAS testing data is available for Cemex Const Materials Atl, LLC under the EPA's UCMR5 monitoring program.
What water source does Cemex Const Materials Atl, LLC use? ▼
Cemex Const Materials Atl, LLC uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.
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.