Mclean, ND

Compiled by PlainEnviro Editorial, Environmental Data Editorial Team · July 13, 2026

Moderate Risk (33/100)

A PlainEnviro-computed score from reported facility/violation counts, not an official EPA rating, health forecast, or population-adjusted rate. See methodology. This is a different measure than the EJ Screening score for this county, which ranks it by percentile against every other tracked county rather than against fixed national thresholds.

Environmental data for Mclean in North Dakota · Population: 9,807

Mclean, ND is tracked across three EPA datasets covering 2 Toxics Release Inventory (TRI) facilities, 13 Safe Drinking Water Act systems, and 0 Superfund National Priorities List sites. Together these generate an environmental burden score of 33/100 (Moderate Risk), calibrated against national distributions for facility density, chemical release volume, Superfund concentration, and water-system health violations.

Industrial disclosures inside the county total 14.6M lbs of reported toxic releases under EPCRA Section 313, while 2 water systems carry an active health-based violation in the SDWIS record. No EPA Air Quality System monitors currently report data for this county.

All figures below draw directly from federal EPA records, TRI self-reported emissions, SDWIS compliance history, NPL Hazard Ranking System scores, and AQS daily AQI summaries, and are not adjusted, weighted, or forecast. A past violation or elevated score does not itself indicate current unsafe conditions; it documents the regulatory and disclosure history publicly filed with the U.S. Environmental Protection Agency through the most recent reporting cycle.

Population

9,807

TRI Facilities

Water Systems

Superfund Sites

Total Releases

14.6M lbs

Water Systems (13)

System	City	Source	Population	Violations	Health
GARRISON RURAL WATER DISTRICT	Garrison	Surface Water	1,805	0	–
MCLEAN-SHERIDAN WATER DISTRICT-SYSTEM 1	Turtle Lake	Groundwater	1,800	0	–
GARRISON CITY OF	Garrison	Surface Water	1,453	0	–
WASHBURN CITY OF	Washburn	Surface Water	1,246	0	–
UNDERWOOD CITY OF	Underwood	Surface Water	778	1	Yes
TURTLE LAKE CITY OF	Turtle Lake	Groundwater	581	0	–
MCLEAN-SHERIDAN WATER DISTRICT-SYSTEM 3	Turtle Lake	Surface Water	400	0	–
MCLEAN-SHERIDAN WATER DISTRICT-SYSTEM 2	Turtle Lake	Surface Water	390	8	Yes
MAX CITY OF	Max	Groundwater	334	0	–
RIVERDALE CITY OF	Riverdale	Surface Water	205	0	–
MERCER CITY OF	Mercer	Groundwater	94	0	–
RYDER CITY OF	Ryder	Groundwater	85	0	–
COLEHARBOR CITY OF	Coleharbor	Groundwater	79	0	–

TRI Facilities (2)

#	Facility	City	Industry	Total Releases
1	Coal Creek Station	Underwood	Electric Utilities	14.5M lbs
2	Blue Flint Ethanol	Underwood	Chemicals	70.9K lbs

Cities in Mclean (1)

Underwood

Pop: -

2 facilities · 1 water

Frequently Asked Questions

What is the environmental risk level in Mclean, North Dakota? ▼

Mclean, ND has an environmental risk score of 33/100 (Moderate Risk), based on 2 TRI facilities, 0 Superfund sites, and 13 water systems on record. 2 water systems have health-based violations. Source: EPA TRI, SDWIS, and Superfund NPL.

Are there Superfund sites in Mclean? ▼

No Superfund National Priorities List (NPL) sites are currently registered in Mclean, ND in the EPA database.

How many toxic release facilities are in Mclean? ▼

Mclean, ND has 2 TRI-reporting facilities on record with the EPA Toxic Release Inventory, with a combined total of 14.6M lbs in reported toxic releases. TRI facilities self-report annual chemical release data to the EPA.

What is the air quality in Mclean? ▼

Air quality monitoring data (EPA AQS) is not available for Mclean, ND. This may indicate no EPA monitoring stations are located in the county. For regional air quality data, see the state environmental profile or visit EPA's AirNow.gov.

Is the drinking water safe in Mclean? ▼

Mclean, ND has 13 EPA-regulated water systems. 2 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 Mclean? ▼

Environmental compliance in Mclean, North Dakota is overseen by the U.S. Environmental Protection Agency (EPA) at the federal level and the North Dakota 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.

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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 Editorial