Contact: John Persell
Address: P.O. Box 217
1st & Spruce Street
Cass Lake, MN 56633
Telephone: (218) 335-6303 or 335-6306
Fax: (218) 335-8187
Services/Products: Certified drinking water analysis for bacteria, nitrate, fluoride, heavy metals, and volatile organics. Secondary drinking water parameters and surface water research including chemistry, biocriteria and fish tissue analysis. Technical assistance also available.
