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Union, AR

High Risk (67/100)

Transparent derived index from EPA TRI / SDWIS / Superfund extracts: not an official EPA rating. Fixed caps: facilities ≤25 pts (50+ = max), log10 releases ≤25 pts, Superfund ≤25 pts (5/site), health-violation systems ≤15 pts (3/system), high-chemical facilities ≤10 pts. Bands: High ≥60, Moderate ≥30. See methodology. This is a different measure than the EJ Screening score for this county, which ranks it by percentile against other tracked counties rather than against these fixed caps.

Environmental data for Union in Arkansas · Population: 38,368

TRI sites such as Clean Harbors el Dorado LLC; Lsb Chemical L.l.c; Lanxess - Central; SDWIS systems such as EL DORADO WATERWORKS; SMACKOVER WATERWORKS; PARKERS CHAPEL PUBLIC WATER; NPL sites such as MacMillan Ring Free Oil; Popile, Inc. anchor Union, AR's EPA extract. Derived burden score 67/100 (High Risk) uses fixed national caps on density, log release volume, Superfund count, and health-flagged systems - not an official EPA rating.

Health-flagged SDWIS rows in Union include EL DORADO WATERWORKS; SMACKOVER WATERWORKS; PARKERS CHAPEL PUBLIC WATER, while Clean Harbors el Dorado LLC leads reported TRI pounds among local Form R filers. AQS median AQI 49 / peak 93 in 2024.

Burden score 67/100 (High Risk) is the only weighted composite on this page. The tables below list every TRI facility, SDWIS system, and Superfund site EPA has on record for Union -- not just the names called out above -- reproducing the disclosure history as filed, not a current-safety verdict. Extract current as of 2026-08-25.

Release-over-release change

What changed for Union, AR: EPA TRI 2023 reporting year

2022 → 2023

Same facilities, both years

-2.0%

14 facilities that filed in 2022 and 2023

Whole inventory

-2.0%

6.6 million lb → 6.5 million lb, every facility that filed

  • Union, AR's total reported releases fell from 6.6 million lb in 2022 to 6.5 million lb in 2023, based on EPA TRI filings.
  • Union, AR's air releases rose from 708.0 thousand lb in 2022 to 881.0 thousand lb in 2023, based on EPA TRI filings.
  • Union, AR's water releases rose from 866.9 thousand lb in 2022 to 1.1 million lb in 2023, based on EPA TRI filings.
  • Union, AR's land releases fell from 4.8 million lb in 2022 to 4.3 million lb in 2023, based on EPA TRI filings.
County population (Census ACS)
38,368
TRI Facilities
17
Water Systems
30
Superfund Sites
2
Total Releases
29.2M lbs

Air Quality History (2020–2024)

EPA Air Quality Index (AQI) data showing how many days per year fall into each air quality category.

Year Good Moderate Unhealthy (SG) Max AQI
2024 62 (51%) 59 0 93
2023 59 (50%) 59 1 102
2022 65 (57%) 50 0 100
2021 66 (57%) 50 0 74
2020 74 (61%) 47 0 90
2024 Good Air Quality: 51% of days
Median AQI: 49

Source: EPA Air Quality System (AQS) Annual AQI by County AQI categories: Good (0-50), Moderate (51-100), Unhealthy for Sensitive Groups (101-150), Unhealthy (151-200), Very Unhealthy (201-300), Hazardous (301+)

For real-time air quality readings and pollutant breakdowns in Arkansas, see the EPA's AirNow.gov.

Water Systems (30)

System System pop (SDWIS) Violations
EL DORADO WATERWORKS 17,932 7
SMACKOVER WATERWORKS 2,821 2
PARKERS CHAPEL PUBLIC WATER 2,391 2
FRENCHPORT WATER ASSOCIATION 1,793 0
WILDWOOD WATER ASSOCIATION 1,350 2
FAIRCREST WATER ASSOCIATION 1,329 6
OLD UNION PUBLIC WATER AUTHORITY 1,200 12
NEW HOPE WATER ASSOCIATION 1,136 2
STRONG WATERWORKS 1,131 5
NORPHLET WATERWORKS 1,112 2
LAWSON-URBANA WATER ASSOC 1,108 4
MARYSVILLE WATER ASSOCIATION 867 2
NEW LONDON WATER ASSOCIATION 850 76
HUTTIG WATERWORKS 733 3
QUINN WATER ASSOCIATION 729 0
JUNCTION CITY WATERWORKS 726 4
VILLAGE OF JUNCTION CITY WATER SYSTEM 708 4
WESSON-NEWELL WATER ASSOC 658 0
JOHNSON TOWNSHIP WATER ASSOC 600 10
BATTS-LAPILE WATER ASSOCIATION 583 2
CALION WATER WORKS 494 0
WARD NINE WATER SYSTEM 465 10
LISBON WATER ASSOCIATION 439 0
MOUNT HOLLY WATERWORKS 384 0
OAK MANOR WATER ASSOCIATION 338 0
HARMONY WATER ASSOCIATION 336 33
RANDOLPH WATER SYSTEM 249 32
BANKS WATERWORKS 244 18
LOUANN WATERWORKS 170 0
FELSENTHAL WATER AND SEWER 150 0

TRI Facilities (17)

# Facility Total Releases
1 Clean Harbors el Dorado LLC 16.6M lbs
2 Lsb Chemical L.l.c 4.2M lbs
3 Lanxess - Central 3.4M lbs
4 Lanxess - South Plant 2.1M lbs
5 Lion Oil Co 2.0M lbs
6 Lycus Ltd 389.0K lbs
7 Roseburg Forest Products - el Dorado Mdf 247.8K lbs
8 Anthony Forest Products Co Urbana 120.0K lbs
9 Prescolite Inc. 104.1K lbs
10 Chemours el Dorado 61.7K lbs
11 Anthony Forest Products Co LLC - Laminating Plant 13.5K lbs
12 Shaw el Dorado LLC 2.8K lbs
13 Nexans Amercable Inc. 2.6K lbs
14 Martin Operating Ptnr LP 2.5K lbs
15 Continental Carbonic Products Inc. 493 lbs
16 Milbank Manufacturing Co 0 lbs
17 Quality Mill of Arkansas LLC 0 lbs

Superfund Sites (2)

Site Name Status HRS Score
MacMillan Ring Free Oil NPL Site 50.00
Popile, Inc. NPL Site 50.03

Cities in Union (9)

El Dorado
15 facilities · 14 water
Junction City
1 facilities · 5 water
Smackover
1 facilities · 2 water
Strong
0 facilities · 4 water
Calion
0 facilities · 1 water
Felsenthal
0 facilities · 1 water
Huttig
0 facilities · 1 water
Mount Holly
0 facilities · 1 water
Norphlet
0 facilities · 1 water

Frequently Asked Questions

What is the environmental risk level in Union, Arkansas? ▼
Union, AR has an environmental risk score of 67/100 (High Risk), based on 17 TRI facilities, 2 Superfund sites, and 30 water systems on record. 21 water systems have health-based violations. Source: EPA TRI, SDWIS, and Superfund NPL.
Are there Superfund sites in Union? ▼
Yes, Union, AR has 2 Superfund sites on the EPA National Priorities List (NPL). Superfund sites are contaminated locations that require long-term cleanup under the EPA Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA).
How many toxic release facilities are in Union? ▼
Union, AR has 17 TRI-reporting facilities on record with the EPA Toxic Release Inventory, with a combined total of 29.2M lbs in reported toxic releases. TRI facilities self-report annual chemical release data to the EPA.
What is the air quality in Union? ▼
In 2024, Union, AR recorded a median AQI of 49 and a peak AQI of 93. 51% of monitored days had "Good" air quality (AQI 0–50). Source: EPA Air Quality System (AQS) Annual AQI by County.
Is the drinking water safe in Union? ▼
Union, AR has 30 EPA-regulated water systems. 21 systems have reported health-based violations (MCL exceedances). A past violation does not necessarily mean water is currently unsafe. For current water quality, contact your local water utility. Source: EPA SDWIS.
What environmental agencies cover Union? ▼
Environmental compliance in Union, Arkansas is overseen by the U.S. Environmental Protection Agency (EPA) at the federal level and the Arkansas state environmental agency. Facilities report to the EPA Toxic Release Inventory, water systems are regulated under the Safe Drinking Water Act, and contaminated sites are managed under the Superfund program. Contact your state environmental agency for local concerns.

What does this county environmental profile show?

This county environmental profile rolls up EPA Toxics Release Inventory facility reports, Safe Drinking Water Information System public-water-system filings, and Superfund National Priorities List sites for the county boundary defined by the U.S. Census Bureau. Facility counts reflect facilities with a reporting address inside the county, not where downstream environmental effects may be observed. Population figures are from the most recent Census ACS 5-year estimate. The county detail page is updated whenever the upstream EPA programs publish revised data; see the methodology page for the documented ingest cadence and the editorial choices governing how aggregations are computed.

Related Guides

Understanding EPA Data
How EPA collects and publishes environmental data
Environmental Justice
Who lives near polluters and environmental hazards
How to Check Environmental Quality
Step-by-step guide to checking your local environment

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from U.S. EPA environmental datasets. See our methodology for details. Retrieved and formatted by PlainEnviro