EPA-regulated facilities in Nevada County, CA

There are 1,328 EPA-regulated facilities inside Nevada County, California. The most common kinds are hazardous waste (1,087), water discharge (110), drinking water systems (87). 3 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 9 have a violation on record. Penalties over the last five years total $5.4M across 6 sites.

Open the map of Nevada County

1,328facilities in the county

3in significant noncompliance

9with a violation on record

$5.4Min penalties, last 5 years

By category

Category	Facilities
Hazardous waste	1,087
Large quantity generators	16
Small quantity generators	112
Transporters	9
Chemical (RMP/TRI)	8
Superfund	6
Air emissions	69
Minor sources	2
Water discharge	110
Major permits	1
Minor permits	95
Drinking water systems	87
Scrap yards	2

A facility enrolled in several programs counts once in the total and once in each of its categories.

In significant noncompliance

The EPA's designation for its most serious or persistent violations, as of the latest data.

LAKE WILDWOOD WWTP 12622 PLEASANT VALLEY ROAD, PENN VALLEY, CA, 95946 Significant noncompliance · $15k in penalties
LAKE OF THE PINES WWTP 10803 RIATA WAY, AUBURN, CA, 95602 Significant noncompliance · $6k in penalties
CASCADE SHORES WWTP 14326 GAS CANYON RD, NEVADA CITY, CA, 95959 Significant noncompliance

Largest penalties

Penalties assessed over the last five years.

UPS GRASS VALLEY CAGVA 12025 CHARLES DR, GRASS VALLEY, CA, 95945 $5.3M in penalties
DONNER SUMMIT WWTF 53823 SHERRITT LN, SODA SPRINGS, CA, 95728 $36k in penalties
NEVADA CITY WASTEWATER TREATMENT PLANT 317 BROAD STREET, NEVADA CITY, CA, 95959 $12k in penalties
SKYLER ELECTRIC CO., INC 12911 LOMA RICA DR, GRASS VALLEY, CA, 95945 $3k in penalties

Superfund sites

POORE MINE BENEDICT CANYON LANE, NEVADA CITY, CA, 95959
LAVA CAP MINE 14501 LAVA CAP MINE RD, NEVADA CITY, CA, 95959
TAHOE NAT FOREST TAHOE NAT FOREST, NEVADA CITY, CA, 95959
CHAMPION MINE 16053 OLD DOWNIEVILLE HWY., NEVADA CITY, CA, 95959
IDAHO MARYLAND MINE 10344 CENTENNIAL DRIVE, GRASS VALLEY, CA, 95945-5917
EMPIRE MINE STATE HISTORICAL PARK 10791 E EMPIRE ST, GRASS VALLEY, CA, 95945

Towns in Nevada County

Bordering counties

Reading these numbers

These are regulatory records, not measurements of pollution. Most facilities appear because they hold a permit or file reports, and most of them are compliant; a listing is not a claim that a facility has polluted anything. Compliance status and penalties are the EPA's own determinations in data retrieved Oct 9, 2026. The Data page explains where each record comes from and how it can mislead.