Last Updated: 04/05/2017
Last updated: 07/08/2009
After nearly seven months of construction, the filter at Well 29 began operating on April 15, 2009. The filter is expected to reduce iron and manganese to levels well below the secondary drinking water standards of 0.3 mg/L and 50 ug/L, respectively.
Test results for samples collected from the start of filter operation through June 19. The table shows results for unfiltered water and filtered water as it entered the distribution system. All samples were analyzed by a certified drinking water laboratory.
Water quality issues had been a problem at Well 29 since its start-up in 2005. Elevated levels of these naturally occurring minerals led to discolored water observed at customer taps as well as stained laundry and plumbing fixtures.
Well 29 completed a 30-day commissioning period on May 15, 2009, and is now in full production. The filter is removing well over 95% of the iron and manganese from the well with finished water concentrations consistently below 0.10 ppm for iron and 10 ppb for manganese. This is well below the EPA secondary (esthetic) drinking water standards.
The contractor, Staab Construction of McFarland, finished work on the site including site cleanup and landscaping and was off site by June.
The well will be pumping year round and deliver over 1.6 million gallons per day to East Side residents. An open house of the facility was held Saturday, August 15.
Status of Unit Well 29 - Currently In Service
Well 29 Reports
- Well 29 Proposed Filter Preliminary Drawings Posted: 6/18/08 (PDF 3.86MB)
- Well 29 Pump Test Final Report Posted: 4/1/2008 (PDF 1.89MB)
- Well 29 Summary Report Posted: 7/18/2007 (PDF 1.05MB)
- Tables 2-5 from consultant report Posted: 7/18/2007 (PDF 294KB)
- Figures from consultant report Posted: 7/18/2007 (PDF 1.01MB)
- Appendix A from report: Field Investigations Posted: 7/18/2007 (PDF 340KB)
- Appendix B from report: Testing Protocol Posted 7/18/2007 (PDF 269KB)
- Appendix C from report: Groundwater Modeling Posted: 7/18/2007 (PDF 812KB)
- Montgomery Associates are developing a scope and budget for Phase 2 of the iron and manganese investigation study to expand on information developed during Well 29 work. In Phase 2 several other wells will be sampled to evaluate water quality characteristics and sources of iron and manganese.
- Scope of work and contract have been negotiated with Earth Tech, Inc. A project kickoff meeting was held July 18.
- Well 29 Pilot Study Report Madison Water Utility Posted: 3/22/2007 (PDF 1MB)
- Well 29 Manganese Assessment Posted: 3/22/2007 (PDF 137KB)