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Eau Claire, WI

Moderate Risk (46/100)

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.

Environmental data for Eau Claire in Wisconsin · Population: 106,328

TRI sites such as American Phoenix Inc.; Cascades Tissue Group - Wiscon Sin Inc.; Hutchinson Technology Inc; SDWIS systems such as ALTOONA WATERWORKS; HILLCREST ESTATES MHP; VILLA DIANN MHP; NPL sites such as Eau Claire Municipal Well Field; Waste Research & Reclamation Co. anchor Eau Claire, WI's EPA extract. Derived burden score 46/100 (Moderate 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 Eau Claire include ALTOONA WATERWORKS; HILLCREST ESTATES MHP, while American Phoenix Inc. leads reported TRI pounds among local Form R filers. AQS median AQI 38 / peak 142 in 2024.

Burden score 46/100 (Moderate 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 Eau Claire -- 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 Eau Claire, WI: EPA TRI 2023 reporting year

2022 → 2023

Same facilities, both years

-19.8%

13 facilities that filed in 2022 and 2023

Whole inventory

-19.8%

126.9 thousand lb → 101.8 thousand lb, every facility that filed

  • Eau Claire, WI's total reported releases fell from 126.9 thousand lb in 2022 to 101.8 thousand lb in 2023, based on EPA TRI filings.
  • Eau Claire, WI's air releases fell from 19.0 thousand lb in 2022 to 9.3 thousand lb in 2023, based on EPA TRI filings.
  • Eau Claire, WI's water releases rose from 14.5 thousand lb in 2022 to 18.7 thousand lb in 2023, based on EPA TRI filings.
  • Eau Claire, WI's off-site transfers fell from 93.5 thousand lb in 2022 to 73.7 thousand lb in 2023, based on EPA TRI filings.
County population (Census ACS)
106,328
TRI Facilities
13
Water Systems
3
Superfund Sites
2
Total Releases
455.9K 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 299 (82%) 66 1 142
2023 210 (58%) 137 13 164
2022 268 (73%) 97 0 81
2021 212 (59%) 145 4 154
2020 256 (70%) 110 0 93
2024 Good Air Quality: 82% of days
Unhealthy days: 1
Median AQI: 38

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 Wisconsin, see the EPA's AirNow.gov.

Water Systems (3)

System System pop (SDWIS) Violations
ALTOONA WATERWORKS 9,627 1
HILLCREST ESTATES MHP 850 4
VILLA DIANN MHP 420 0

TRI Facilities (13)

# Facility Total Releases
1 American Phoenix Inc. 174.8K lbs
2 Cascades Tissue Group - Wiscon Sin Inc. 104.7K lbs
3 Hutchinson Technology Inc 76.1K lbs
4 Wrr Environmental Services Co Inc 64.2K lbs
5 Midwest Manufacturing Treating Plant 31.5K lbs
6 Veritas Steel 3.8K lbs
7 Lippert 875 lbs
8 Midwest Manufacturing Prehung Plant 5 lbs
9 Wood Ecology Inc. 5 lbs
10 American Materials - Eau Claire 0 lbs
11 Eau Claire Co-Operative Oil Co 0 lbs
12 Nestle Health Science 0 lbs
13 Perrigo Wi 0 lbs

Superfund Sites (2)

Site Name Status HRS Score
Eau Claire Municipal Well Field Deleted NPL Site 35.57
Waste Research & Reclamation Co. Deleted NPL Site 32.13

Cities in Eau Claire (2)

Eau Claire
13 facilities · 3 water
Altoona
0 facilities · 3 water

Frequently Asked Questions

What is the environmental risk level in Eau Claire, Wisconsin? ▼
Eau Claire, WI has an environmental risk score of 46/100 (Moderate Risk), based on 13 TRI facilities, 2 Superfund sites, and 3 water systems on record. 2 water systems have health-based violations. Source: EPA TRI, SDWIS, and Superfund NPL.
Are there Superfund sites in Eau Claire? ▼
Yes, Eau Claire, WI has 2 Superfund sites on the EPA National Priorities List (NPL). Superfund sites are contaminated locations that require long-term cleanup under the EPA Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA).
How many toxic release facilities are in Eau Claire? ▼
Eau Claire, WI has 13 TRI-reporting facilities on record with the EPA Toxic Release Inventory, with a combined total of 455.9K lbs in reported toxic releases. TRI facilities self-report annual chemical release data to the EPA.
What is the air quality in Eau Claire? ▼
In 2024, Eau Claire, WI recorded a median AQI of 38 and a peak AQI of 142. 82% 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 Eau Claire? ▼
Eau Claire, WI has 3 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 Eau Claire? ▼
Environmental compliance in Eau Claire, Wisconsin is overseen by the U.S. Environmental Protection Agency (EPA) at the federal level and the Wisconsin 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