PlainEnviro

Del Norte, CA

Low Risk (25/100)

A PlainEnviro-computed score from reported facility/violation counts, not an official EPA rating, health forecast, or population-adjusted rate. See methodology.

Environmental data for Del Norte in California · Population: 27,293

Del Norte, CA is tracked across three EPA datasets covering 1 Toxics Release Inventory (TRI) facility, 20 Safe Drinking Water Act systems, and 0 Superfund National Priorities List sites. Together these generate an environmental burden score of 25/100 (Low Risk), calibrated against national distributions for facility density, chemical release volume, Superfund concentration, and water-system health violations.

Industrial disclosures inside the county total 1.0K lbs of reported toxic releases under EPCRA Section 313, while 13 water systems carry an active health-based violation in the SDWIS record. EPA Air Quality System monitors logged a median AQI of 32 and a peak AQI of 125 in 2024, with 80% 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.

Population
27,293
TRI Facilities
1
Water Systems
20
Superfund Sites
0
Total Releases
1.0K 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 232 (80%) 55 2 125
2023 268 (82%) 52 6 187
2022 299 (87%) 45 0 74
2021 259 (80%) 64 0 72
2020 193 (66%) 90 4 245
2024 Good Air Quality: 80% of days
Unhealthy days: 2
Median AQI: 32

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 California, see the EPA's AirNow.gov.

Water Systems (20)

System Population Violations
CITY OF CRESCENT CITY 17,262 0
BERTSCH OCEAN VIEW CSD 2,570 0
SMITH RIVER C.S.D. 2,568 0
GASQUET C.S.D. 657 2
BIG ROCK C.S.D. 650 1
KLAMATH C.S.D. 360 1
Yurok - Terwer Water System 300 0
Howonquet Community(Smith River) 220 0
Yurok - Requa 215 0
REDWOOD PARK C.S.D. 200 2
HRC C.S.D. 185 2
Yurok - Weitchpec 120 16
WEST PARK PROPERTIES 112 1
Yurok - Wautec 96 24
HUNTER VALLEY CSD 96 1
Yurok - Kepel 76 10
Pulikla Tribe 70 0
ROCK CREEK MUTUAL WATER CO. 60 2
JED SMITH HOMEOWNERS ASSN. 58 2
Yurok - McCoy - Kenek 30 44

TRI Facilities (1)

# Facility Total Releases
1 Rumiano Cheese Co 1.0K lbs

Cities in Del Norte (1)

Crescent City
Pop: -
1 facilities · 7 water

Frequently Asked Questions

What is the environmental risk level in Del Norte, California? ▼
Del Norte, CA has an environmental risk score of 25/100 (Low Risk), based on 1 TRI facilities, 0 Superfund sites, and 20 water systems on record. 13 water systems have health-based violations. Source: EPA TRI, SDWIS, and Superfund NPL.
Are there Superfund sites in Del Norte? ▼
No Superfund National Priorities List (NPL) sites are currently registered in Del Norte, CA in the EPA database.
How many toxic release facilities are in Del Norte? ▼
Del Norte, CA has 1 TRI-reporting facility on record with the EPA Toxic Release Inventory, with a combined total of 1.0K lbs in reported toxic releases. TRI facilities self-report annual chemical release data to the EPA.
What is the air quality in Del Norte? ▼
In 2024, Del Norte, CA recorded a median AQI of 32 and a peak AQI of 125. 80% 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 Del Norte? ▼
Del Norte, CA has 20 EPA-regulated water systems. 13 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 Del Norte? ▼
Environmental compliance in Del Norte, California is overseen by the U.S. Environmental Protection Agency (EPA) at the federal level and the California 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 Editorial