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 Lidgerwood, North Dakota (Round 1)

Site Information
Location: Lidgerwood, ND
Population: 750
Address: P.O. Box 398
Lidgerwood, ND 58053
Contact: Glen Lueck 
Demonstration Site: Water Treatment Plant
Highway 18 N
Enclosed Space: None
Source Water: Ground Water
Maximum Daily Flow: 139 gpm (200,000 gpd)
Existing Treatment: Chlorination + Aeration + KMnO4 + Polymer + Mixing + Sand Filter
Arsenic Removal Technology: Kinetico Modified Treatment
Disposal Option: Small Storage Tank


Project Status
Cooperative Research and Development Agreement (CRADA) signed Completed
CRADA approved by legal Completed
EPA/contractor site visit Completed
Contractor/system agreement Completed
Plans submitted Completed
Plans approved Completed
Equipment installed Completed
Study began Completed
Study completed Completed
Six-month report cleared Completed
Final report cleared Completed


Source Water Quality
Analysis mg/L Analysis mg/L
Total As 0.108 avg. pH – Units 7.47
As (III) N/A Ca 128
As (V) N/A Mg 29*
Fe 1.31 Na 142
Mn 0.544 Chloride 36
PO4 – P <0.065* Hardness as CaCO3 444
Si 13* T. Alkalinity as CaCO3 385
SO4 344 TOC N/A

Note 1: All data provided by utility except as noted.
Note 2: Finished water was reduced to 0.031 mg/L.
N/A = Not available
* = Data provided by EPA.


Tom Sorg

See Also

Fact Sheet, EPA’s Water Treatment Demonstration Project to Reduce Amount of Arsenic in Lidgerwood, ND, Drinking Water (PDF) (2 pp, 76 KB) February 2005

Federal Register Environmental Documents: Arsenic Treatment Demonstrations

How to Participate

Demo Site Information form (PDF) (2 pp, 57 KB)

Frequently Asked Questions

Publications on Arsenic


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