Clean Air Act stationary source · ICIS-AIR WI0000005502500097
HYDRITE CHEMICAL CO., Cottage Grove, WI: Clean Air Act compliance record, inspections, violations, penalties
- OperatingOperating status
- Major sourceEmissions classification
- Addressed-StateCurrent violation status, as filed
- 7Compliance evaluations since January 1, 2017
- 0High-priority violations since January 1, 2017
- 1Formal enforcement actions since January 1, 2017
HYDRITE CHEMICAL CO., at 114 N MAIN ST, Cottage Grove in Dane County, Wisconsin, is an operating major source of air pollution on EPA’s ICIS-AIR register. EPA’s file records its current violation status (ICIS-AIR’s high-priority violation field) as “Addressed-State”. Dane County is on EPA’s Green Book list of areas that do not meet a national air quality standard. The status and classification are as EPA’s facility file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the source’s current standing, quarter by quarter.
Identity
| Facility as filed | HYDRITE CHEMICAL CO. |
|---|---|
| ICIS-AIR ID | WI0000005502500097 |
| EPA facility registry ID | 110000419609 |
| Operating status | Operating |
| Emissions classification | Major source |
| Current violation status (ICIS-AIR high-priority violation field) | Addressed-State |
| Address | 114 N MAIN ST, Cottage Grove, WI 535279701 |
| County | Dane County |
| In a nonattainment county | Yes (EPA Green Book) |
| Industry (NAICS) | Chemical manufacturing (NAICS 3251) |
| SIC code | 2869 |
| EPA region | 05 |
Cited to the EPA ICIS-AIR facility file (ECHO download).
Programs and pollutants
Velarion’s copy of EPA’s ICIS-AIR download does not include its program, pollutant and Title V certification files, so this page does not list the Clean Air Act programs HYDRITE CHEMICAL CO. is under or the pollutants it is permitted for. The programs each evaluation and violation below was recorded under are shown with it. EPA’s free Detailed Facility Report lists both.
Compliance evaluations
- 7Evaluations since January 1, 2017
- 5Full compliance evaluations
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| June 23, 2025 | FCE On-Site | State | Title V Permits |
| August 30, 2023 | FCE On-Site | State | Title V Permits |
| June 29, 2022 | FCE On-Site | State | Title V Permits |
| June 15, 2020 | FCE On-Site | State | Title V Permits |
| March 19, 2019 | PCE On-Site | U.S. EPA | MACT Standards (40 CFR Part 63) |
| June 20, 2018 | FCE On-Site | State | Title V Permits |
| April 6, 2017 | PCE On-Site | U.S. EPA | MACT Standards (40 CFR Part 63); New Source Performance Standards; Operating Permits |
Violations
- 0Violation determinations since January 1, 2017
- 0Of them high-priority
A high-priority violation (HPV) is the most serious class of Clean Air Act non-compliance an agency records; a federally reportable violation (FRV) is the next step down. Each row is one determination as EPA’s violation history files it.
EPA’s violation history file holds no violation for ICIS-AIR WI0000005502500097 since January 1, 2017.
Enforcement and penalties
1 formal enforcement actions since January 1, 2017, 1 of them with a penalty filed above zero. Each penalty is shown as EPA’s formal action file states it; “Not stated” means the file gives no figure, and $0 is a disclosed zero.
| Date | What EPA recorded | Agency | Penalty, as filed |
|---|---|---|---|
| January 22, 2021 | Civil Judicial Action | U.S. EPA | $480,500 |
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| June 30, 2017 | Notice of Violation | U.S. EPA |
Stack tests
- 18Stack tests since January 1, 2017
- 2Recorded as failed
| Date | What EPA recorded | Agency |
|---|---|---|
| June 24, 2026 | N/A | State |
| April 28, 2026 | Pass | State |
| September 18, 2024 | Pass | State |
| April 23, 2024 | Pass | State |
| February 20, 2024 | Pass | State |
| August 9, 2023 | Fail | State |
| July 7, 2022 | Pass | State |
| February 4, 2022 | Pass | State |
| December 14, 2021 | Pass | State |
| May 13, 2021 | Pass | State |
| April 29, 2020 | Pass | State |
| November 22, 2019 | Pass | State |
| September 24, 2019 | Pass | State |
| March 12, 2019 | Pass | State |
| October 16, 2018 | Fail | State |
| February 14, 2018 | Pass | State |
| September 27, 2017 | Pass | State |
| July 20, 2017 | Pass | State |
Cited to the EPA ICIS-AIR evaluation, violation, stack test and enforcement files (ECHO download), events dated January 1, 2017 or later as loaded; up to 50 rows of each shown, newest first.
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How we handle your data → Privacy
EPA publishes a free Detailed Facility Report for every source on ECHO: its compliance status quarter by quarter, its evaluations, and its violations, enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter EPA facility registry ID 110000419609 there.
Nearby on the register
- Air-emissions sources in Dane County
- Every source record in Dane County, A to Z
- Air-emissions sources in Wisconsin
- Every source record in Wisconsin, A to Z
Figures from EPA’s ICIS-AIR download, loaded September 14, 2026.