Clark, NV
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 Clark in Nevada · Population: 2,293,764
Clark, NV is tracked across three EPA datasets covering 50 Toxics Release Inventory (TRI) facilities, 58 Safe Drinking Water Act systems, and 0 Superfund National Priorities List sites. Together these generate an environmental burden score of 73/100 (High Risk), calibrated against national distributions for facility density, chemical release volume, Superfund concentration, and water-system health violations.
Industrial disclosures inside the county total 18.4M lbs of reported toxic releases under EPCRA Section 313, while 29 water systems carry an active health-based violation in the SDWIS record. EPA Air Quality System monitors logged a median AQI of 64 and a peak AQI of 170 in 2024, with 25% of observed days rated "Good" (0–50).
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.
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 | 90 (25%) | 236 | 39 | 170 |
| 2023 | 106 (29%) | 233 | 25 | 197 |
| 2022 | 71 (19%) | 268 | 20 | 480 |
| 2021 | 87 (24%) | 244 | 31 | 183 |
| 2020 | 92 (25%) | 249 | 22 | 174 |
Source: EPA Air Quality System (AQS) Annual AQI by County 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 Nevada, see the EPA's AirNow.gov.
Water Systems (58)
| System | Population | Violations |
|---|---|---|
| NORTH LAS VEGAS UTILITIES | 376,515 | 0 |
| HENDERSON CITY OF | 336,534 | 0 |
| VIRGIN VALLEY WATER DISTRICT | 26,000 | 0 |
| NELLIS AIR FORCE BASE | 19,081 | 3 |
| BOULDER CITY | 15,000 | 0 |
| MOAPA VALLEY WATER DISTRICT | 8,500 | 0 |
| PRIMM VALLEY CASINO RESORTS | 7,000 | 12 |
| SOUTHERN DESERT CORRECTIONAL CTR NDOC | 6,200 | 3 |
| SIGNATURE TOWERS | 2,356 | 0 |
| LOVELOCK CORRECTIONAL CENTER NDOC | 1,630 | 0 |
| KATHERINE LANDING DWTP | 1,300 | 60 |
| ELY MAXIMUM SECURITY PRISON NDOC | 1,099 | 1 |
| INDIAN SPRINGS WATER CO INC | 900 | 0 |
| KINGS ROW TP | 860 | 0 |
| NEVADA STATE VETERANS HOME BOULDER CITY | 708 | 10 |
| NPS BOULDER BEACH | 690 | 0 |
| HILLCREST MANOR WATER USERS ASSOCIATION | 450 | 0 |
| Pokegama Lake Resort and MHP | 400 | 0 |
| EASTLAND HEIGHTS WATER ASSOCIATION | 400 | 0 |
| LAKEVIEW ESTATES | 380 | 0 |
| NPS ECHO BAY | 274 | 0 |
| NPS CALLVILLE BAY | 250 | 0 |
| PLANTATION ACRES MHP | 227 | 3 |
| WESTERN HILLS MHP | 213 | 2 |
| ESCAPEE CO OP OF NEVADA | 200 | 0 |
| COLD CREEK CANYON HOMEOWNERS | 180 | 2 |
| Las Vegas Paiute Snow Mountain | 175 | 7 |
| LISBON MOBILE HOMES | 155 | 0 |
| OSPREY MOBILE HOME PARK | 150 | 10 |
| CREEKSIDE CABINS & RV RESORT | 124 | 1 |
| FRANKLIN MHP | 118 | 0 |
| RANCHO COOPERATIVE WATER COMPANY | 112 | 0 |
| SKY RANCH ESTATES | 110 | 0 |
| EQUESTRIAN ESTATES CO OP WATER ASSOC | 108 | 10 |
| Las Vegas Paiute Colony | 100 | 17 |
| SUNSET MHP | 90 | 0 |
| BLUE DIAMOND WATER CO OP INC | 85 | 8 |
| PINE VILLAGE MHP | 80 | 5 |
| TORREY PINES TINA LN WTR ASSOC | 70 | 2 |
| MERRITT MOBILE HOME & RV PARK | 70 | 3 |
| BIG FIVE PARK | 65 | 0 |
| WESTVIEW TERRACE MOBILE HOME PARK | 60 | 1 |
| BERMUDA PALMS MANAGEMENT LLC | 60 | 11 |
| ROARK ESTATES WATER ASSOC | 60 | 49 |
| PINE VISTA MHP 1 | 60 | 0 |
| C VALLEY MHP | 54 | 1 |
| LAKESIDE ESTATES | 54 | 0 |
| BIG VALLEY MHP | 50 | 0 |
| RAINBOW GARDENS WATER USERS | 45 | 0 |
| TROUT CANYON LAND AND WATER USERS ASSOC | 45 | 0 |
| PALM GARDENS WATER CO OP | 42 | 1 |
| HARRIS SPRINGS RANCH | 40 | 0 |
| SHETLAND WATER DISTRICT | 38 | 9 |
| MCCARTNEY MOBILE ESTATES MHP 2 | 31 | 2 |
| DESERT SUNRISE WATER USERS ASSOC | 25 | 30 |
| FORT APACHE ANN NE WATER ASSOC | 25 | 1 |
| ELKHORN WATER ASSOCIATION LLC | 25 | 11 |
| MCCARTNEY MOBILE ESTATES MHP 1 | 25 | 2 |
TRI Facilities (50)
Cities in Clark (9)
Frequently Asked Questions
What is the environmental risk level in Clark, Nevada? ▼
Are there Superfund sites in Clark? ▼
How many toxic release facilities are in Clark? ▼
What is the air quality in Clark? ▼
Is the drinking water safe in Clark? ▼
What environmental agencies cover Clark? ▼
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.
Read our methodology - how this data is sourced, computed, and verified.