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Community Water System · PWS TN0000310

Hollow Rock Water Dept

Hollow Rock, Tennessee 38342 - drinking water served from groundwater sources to 954 people, tracked in EPA SDWIS and UCMR5.

954
People served
77
EPA violations
4
Health-based
Untested
UCMR5 result

The verdict

EPA records 77 drinking-water violations at Hollow Rock Water Dept, 5% of them health-based - above the Tennessee per-system average.

77
Total EPA violations on record
5%
Health-based (MCL / treatment failure)
954
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Hollow Rock Water Dept

Hollow Rock Water Dept is a local-owned community water system that delivers drinking water to 954 residents in Hollow Rock, Tennessee (Carroll County) through 389 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 77 total violations for this system , of which 4 (5%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 67 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 Coliform (TCR), recorded in 10 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%).

Hollow Rock Water Dept's 77 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
954
Total Violations
77
Health-Based Violations
4
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
389
County
Carroll
School/Daycare
No
MCL Violations
4
Monitoring Violations
67
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 10 2005
Nitrate MR 8 2000
Nitrite MR 6 1997
Lead and Copper Rule MR 5 1996
Coliform (TCR) MCL 4 2007
Revised Total Coliform Rule MON 4 2017
Arsenic MR 4 1993
CYANIDE MR 4 1993
Nickel MR 4 1993
Antimony, Total MR 4 1993
Thallium, Total MR 4 1993
Chlorine MR 4 2017
Fluoride MR 4 1993
Beryllium, Total MR 4 1993
Consumer Confidence Rule Other 3 1999
Nitrate-Nitrite MR 2 1997
Public Notice Other 1 2018

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 Hollow Rock Water Dept.

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 TN0000310 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 Hollow Rock Water Dept 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 / TN0000310 / 7500
2017 Revised Total Coliform Rule MON 4 SDWIS / TN0000310 / 8000
2017 Chlorine MR 4 SDWIS / TN0000310 / 0999
2007 Coliform (TCR) MCL 4 SDWIS / TN0000310 / 3100
2005 Coliform (TCR) MR 10 SDWIS / TN0000310 / 3100
2000 Nitrate MR 8 SDWIS / TN0000310 / 1040
1999 Consumer Confidence Rule Other 3 SDWIS / TN0000310 / 7000
1997 Nitrite MR 6 SDWIS / TN0000310 / 1041
1997 Nitrate-Nitrite MR 2 SDWIS / TN0000310 / 1038
1996 Lead and Copper Rule MR 5 SDWIS / TN0000310 / 5000
1993 Arsenic MR 4 SDWIS / TN0000310 / 1005
1993 CYANIDE MR 4 SDWIS / TN0000310 / 1024
1993 Nickel MR 4 SDWIS / TN0000310 / 1036
1993 Antimony, Total MR 4 SDWIS / TN0000310 / 1074
1993 Thallium, Total MR 4 SDWIS / TN0000310 / 1085

How Hollow Rock Water Dept Compares

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

Metric Hollow Rock Water Dept Tennessee avg Federal benchmark
Total violations 77 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 954 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 Hollow Rock Water Dept water safe to drink? ▼
Hollow Rock Water Dept (PWS ID: TN0000310) has 77 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 954 people using Groundwater sources.
How many people does Hollow Rock Water Dept serve? ▼
Hollow Rock Water Dept serves 954 people in Hollow Rock, Tennessee. It is a Local-owned system using Groundwater water sources with 389 service connections.
What type of violations does Hollow Rock Water Dept have? ▼
Hollow Rock Water Dept has 77 total violations: 4 health-based violations (MCL exceedances or treatment failures), 67 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Hollow Rock Water Dept water? ▼
No PFAS testing data is available for Hollow Rock Water Dept under the EPA's UCMR5 monitoring program.
What water source does Hollow Rock Water Dept use? ▼
Hollow Rock Water Dept 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.