Loading city report
Preparing Mount Holly environmental records...
Review government records associated with Mount Holly, North Carolina.
Toxin Scout is in beta. Please verify important findings with the linked sources.
Loading city report
Preparing Mount Holly environmental records...
Check your water bill for your utility name and confirm the reporting year. See EPA’s guide to finding your annual water quality report.
Public water-system records for Mount Holly, NC from EPA SDWIS.
Mount Holly, City of
Active monitoring or reporting issue detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
City listed in EPA records · Serves 19,200 people
Data from EPA SDWIS
Reviewed: source records as of Q1 2026
EPA UCMR5 — No PFAS detection records shown for these water systems
Open data source: EPA UCMR5DoD PFAS — No investigation records shown for this report
Open data source: DoD PFASEPA ATTAINS records identify assessed water bodies that do not meet water-quality standards for designated uses.
Mountain Island Lake
Reported: Nov 2026
Health-relevant causes: Polychlorinated Biphenyls (pcbs)
Affected uses: Ecological, Fishconsumption
Data from EPA ATTAINS
NPDES permits regulate pollutant discharges into U.S. waterways. Facilities must report compliance quarterly.
Violation records
Last inspected: Dec 2025
Last inspected: Dec 2025
Data from EPA ECHO
To investigate water contamination, check the sampling locations, dates and results below. For tap water records, see Drinking water quality above.
Reviewed: source records as of 2026
Review historical EPA air pollution records, including monitoring and facility emissions where available. For current conditions, check local air quality on AirNow.
Gaston County
Assessment year: 2020
According to EPA, a cancer risk of 30-in-1-million means that for every 1 million people continuously exposed to these air toxics over a 70-year lifetime, an estimated 30 may develop cancer from that exposure. This is in addition to cancer risk from all other causes.
Top modeled source groups
Data from EPA AirToxScreen
EPA designations apply to a specific pollutant and federal air quality standard (NAAQS). EPA can issue a clean-data determination while a formal designation remains in effect.
Maintenance areas
Previously nonattainment; currently meeting the standard and monitored under an EPA maintenance plan.
Charlotte-Rock Hill
Ozone · 8-Hour Ozone (2008 Standard)
Classification: Marginal
Original designation: Jul 2012
Current design value: 0.068 ppm (2023-2025)
Historical designations under the revoked 1997 ozone standard
These records describe historical designations. EPA revoked the 1997 ozone standard on April 6, 2015.
Charlotte-Gastonia-Rock Hill Area
Historical standard: 0.08 ppm (8-hour)
Historical designation: Maintenance · Subpart 2/Moderate
Original designation: Jun 2004
Open data source: EPA final revocation ruleContinuing requirements have not been verified for this area.
Data from EPA Green Book
EPA annual monitor summaries describe past measurements. For current air quality, see AirNow.
Crouse — Lincolnton, North Carolina
Annual mean: 0.044 Parts per million
Observation year: 2025
Equipment Dr — Charlotte, North Carolina
Annual mean: 24.0 Parts per billion
Observation year: 2025
Friendship Park — Charlotte, North Carolina
Annual mean: 7.8 Micrograms/cubic meter (LC)
Observation year: 2025
Data from EPA AQS
Facilities regulated under the Clean Air Act. CAA HPV flags indicate serious noncompliance such as exceeding emission limits.
No facility records with active violation or noncompliance flags surfaced in EPA ECHO.
Reviewed: active/open records as of Q4 2025
Data from EPA ECHO
TRI releases are self-reported annual totals (calendar year 2024). Hover fugitive or stack for definitions.
American & Efird LLC Plant 05 & 15
Reported: 2024
Arrochem Inc
Reported: 2024
EPA records for current, proposed and formerly listed Superfund sites on the National Priorities List (NPL).
Open data source: Search EPA ECHOEPA FRS Registry ID 110009296742
Reported: Nov 2021
EPA FRS Registry ID 110071099946
Reported: Nov 2021
EPA FRS Registry ID 110009297073
Reported: Nov 2021
Reviewed: source query run Nov 2026
State environmental agencies maintain cleanup site databases that include state Superfund, voluntary cleanup, and brownfield remediation programs. These programs track additional sites beyond those on the federal NPL.
3 sites with active cleanup or investigation
235 TUCKASEEGEE ROAD, MT. HOLLY
2.3 miles away · GASTON County
Reported: Nov 2026
706 SOUTH MAIN STREET, MOUNT HOLLY
2.0 miles away · GASTON County
Reported: Nov 2026
599 AMERICAN ST, MOUNT HOLLY
1.6 miles away · GASTON County
Reported: Nov 2026
Data from EPA ECHO
Facilities with hazardous-waste handler records under RCRA in the reviewed 5-mile city-center search area. Active handler status is separate from air, water, or other ECHO compliance violations, which are shown in their own sections.
Active RCRA handler records in the reviewed city search area
Release reports
Reported: Dec 2021
Data from EPA UST Finder
Reviewed: reporting year 2024
No MSHA mine or extraction site records shown for this report.
Gaston County, NC
EPA Radon Zone Map (June 2024 release)
Gaston County is EPA Radon Zone 2 (moderate potential). EPA defines Zone 2 counties as having predicted average indoor screening levels between 2 pCi/L and 4 pCi/L.
Radon levels can vary from home to home, so EPA recommends testing the property to know its indoor level.
FEMA flood zones describe mapped flood hazards. Look up a specific address with FEMA.
Special Flood Hazard Area — 1% annual chance of flooding (100-year floodplain) with base flood elevation.
Results use an earlier stored RMP inventory. Current EPA ECHO location coverage is unverified.
EPA ECHO lists facilities linked to the Risk Management Program. Results include facilities with locations that can be matched. Records may be historical. Current operations, chemical inventories, and recent accident history are unverified.
Nuclear Regulatory Commission licensed facilities. The Emergency Planning Zone extends 10 miles for plume exposure and 50 miles for the ingestion pathway.
Reported: Mar 2026
This city report includes a facility within the 50-mile ingestion pathway Emergency Planning Zone.
1 reactor · Operated by Duke Energy Carolinas, LLC
Reported: Mar 2026
This city report includes a facility within the 50-mile ingestion pathway Emergency Planning Zone.
1 reactor · Operated by Duke Energy Carolinas, LLC
Reviewed: 2000-present
Health outcomes from County Health Rankings. Values shown alongside state and national averages.
Gaston County, North CarolinaPop. 234,215
County Health Rankings edition: 2024
Premature Death
Poor or Fair Health
Poor Physical Health Days
Poor Mental Health Days
Adult Smoking
Adult Obesity
Air Pollution - Particulate Matter
Drinking water violation indicator
Diabetes Prevalence
Life Expectancy
| Indicator | County | State | National |
|---|---|---|---|
| Premature Death | 10,945 | 8,853 | 7,972 |
| Poor or Fair Health | 15.7% | 14.4% | 14.2% |
| Poor Physical Health Days | 3.4 | 3.3 | 3.3 |
| Poor Mental Health Days | 4.5 | 4.5 | 4.8 |
| Adult Smoking | 17.4% | 15.0% | 15.0% |
| Adult Obesity | 38.2% | 36.4% | 34.0% |
| Air Pollution - Particulate Matter | 9.5 | 7.8 | 7.3 |
| Drinking water violation indicator | Yes | N/A | N/A |
| Diabetes Prevalence | 10.5% | 11.0% | 9.6% |
| Life Expectancy | 73.8 | 76.6 | 77.6 |
This report does not have PFAS sample results for the candidate water systems in Mount Holly.
Check with the utility that serves your address for its testing results.
EPA drinking water records on this page list 7 violations for the City of Mount Holly.
Check your water bill to identify the utility serving your address. Ask that utility about current drinking water advisories.
Nearby EPA monitoring stations provide annual air quality measurements for Mount Holly.
The monitoring station at Crouse, Lincolnton, North Carolina recorded an annual average of 0.044 Parts per million for ozone in 2025.
The monitoring station at Equipment Dr, Charlotte, North Carolina recorded an annual average of 24 Parts per billion for nitrogen dioxide in 2025.
The monitoring station at Friendship Park, Charlotte, North Carolina recorded an annual average of 7.8 Micrograms/cubic meter (LC) for fine particles (PM2.5) in 2025.
The radon data for Mount Holly covers Gaston County. EPA places this area in Zone 2, with a predicted average indoor radon screening level of 2 to 4 picocuries per liter.
This city report shows 3 Superfund sites: Jadco-Hughes Facility; Martin-Marietta, Sodyeco, Inc.; North Belmont Pce.
No brownfield sites were returned for this city report.
View on EPA ECHOView on EPA ECHOView on EPA ECHOEPA brownfield records
The county data for Mount Holly reports a life expectancy of 73.8 years in Gaston County, North Carolina.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
The county data for Mount Holly reports 10,945 years of life lost to deaths before age 75 per 100,000 residents in Gaston County, North Carolina. This measure adds up the years lost to early deaths and adjusts for differences in population age.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
The county data for Mount Holly lists fine-particle pollution (PM2.5) at 9.5 micrograms per cubic meter in Gaston County, North Carolina.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.