Wausau Ground Water Contamination
- Wausau, WI (Marathon County)
- EPA ID#WID980993521
- Alias(es): Wausau Water Supply
Community Involvement Coordinator
Susan Pastor (firstname.lastname@example.org)
312-353-1325 or 800-621-8431, ext. 31325
Remedial Project Manager
Sheri Bianchin (email@example.com)
or 800-621-8431, ext. 4745
(where to view written records)
Marathon County Public Library
300 North First Street
Wausau, WI 54403
The Wausau groundwater site, located in the northern section of the city of Wausau, potentially affects six of the city’s production wells. The wells provide drinking water for about 35,000 people on both sides of the Wisconsin River.
In 1982, three of the wells were found to be contaminated with high levels of volatile organic compounds, or VOCs. In 1984, a temporary carbon filter system was installed on one of the wells until two air strippers were installed. There are two sources associated with contamination. The first source is an old municipal landfill, located south of City Well Six on the Marathon Electric property along the west bank of the Wisconsin River. The second source is on the Wausau Chemical facility property, located southwest of City Well Three along the east bank of the river. Contaminated soil at both areas were treated and capped.
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EPA completed a review of the site's cleanup in April 2015. This type of review is required at least every five years where the cleanup is complete but hazardous waste remains managed on-site. These reviews are done to ensure that the cleanup continues to protect people and the environment.
The review included:
- An evaluation of background information
- Cleanup requirements
- Effectiveness of the cleanup and any anticipated future actions
- Maintenance and monitoring efforts
- An analysis of ways for EPA to operate more efficiently
The review found that the cleanup continues to protect people and the environment, however, more information as to whether it is protective in the short-term won’t be available for about a year. In the long-term, follow-up actions such as land-use restrictions will be required. The next scheduled review will be in 2020.
- Record of Decision (PDF) (48p, 77K) Sept 1989
- Proposed Plan for Remedial Action (PDF) (18p, 646K)
- Proposed Plan for Remedial Action (PDF) (12p, 49K) December, 1988
- Record of Decision(PDF) (23p, 49K) December, 1988
Five Year Reviews
- Fifth Five Year Review (PDF) (147pp, 11MB) April 2015
- Fourth Five Year Review (PDF) (127pp, 5.2MB) April 2010
- Third Five Year Review(PDF) (17pp, 207K) June 2005
- Second Five Year Review(PDF)(10pp, 101K) July 2000
- First Five Year Review(PDF)(7pp, 93K) August 1996