Clark, NV
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 Clark in Nevada · Population: 2,293,764
TRI sites such as Emd Acquisition LLC; Titanium Metals Corp; U.S. Dod Usaf Nellis Afb Test & Trainging Range; SDWIS systems such as NORTH LAS VEGAS UTILITIES; HENDERSON CITY OF; VIRGIN VALLEY WATER DISTRICT anchor Clark, NV's EPA extract. Derived burden score 73/100 (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 Clark include NELLIS AIR FORCE BASE; PRIMM VALLEY CASINO RESORTS; SOUTHERN DESERT CORRECTIONAL CTR NDOC, while Emd Acquisition LLC leads reported TRI pounds among local Form R filers. AQS median AQI 64 / peak 170 in 2024.
Burden score 73/100 (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 Clark -- 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 Clark, NV: EPA TRI 2023 reporting year
Same facilities, both years
-18.2%
51 facilities that filed in 2022 and 2023
Whole inventory
-18.2%
2.9 million lb → 2.3 million lb, every facility that filed
Between the two reporting years, 5 facilities filed for the first time and 3 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Clark, NV's total reported releases fell from 2.9 million lb in 2022 to 2.3 million lb in 2023, based on EPA TRI filings.
- Clark, NV's air releases fell from 52.4 thousand lb in 2022 to 41.5 thousand lb in 2023, based on EPA TRI filings.
- Clark, NV's off-site transfers fell from 2.7 million lb in 2022 to 2.2 million lb in 2023, based on EPA TRI filings.
- Clark, NV's land releases fell from 74.2 thousand lb in 2022 to 67.0 thousand lb in 2023, based on EPA TRI filings.
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 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 | System pop (SDWIS) | 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 | 4 |
| 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 |
| Las Vegas Paiute Snow Mountain | 2,340 | 8 |
| LOVELOCK CORRECTIONAL CENTER NDOC | 1,630 | 0 |
| KATHERINE LANDING DWTP | 1,300 | 63 |
| ELY MAXIMUM SECURITY PRISON NDOC | 1,099 | 0 |
| 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 | 226 | 3 |
| WESTERN HILLS MHP | 213 | 2 |
| ESCAPEE CO OP OF NEVADA | 200 | 0 |
| COLD CREEK CANYON HOMEOWNERS | 180 | 2 |
| 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 | 1 |
| 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 | 1 |
| 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 | 3 |
| RED COACH ESTATES | 26 | 0 |
| DESERT SUNRISE WATER USERS ASSOC | 25 | 36 |
| FORT APACHE ANN NE WATER ASSOC | 25 | 1 |
| ELKHORN WATER ASSOCIATION LLC | 25 | 13 |
| MCCARTNEY MOBILE ESTATES MHP 1 | 25 | 3 |
TRI Facilities (50)
Cities in Clark (13)
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.