Quick Nitrate & Nitrite Water Test Kit for City or Well Water (West)This tests your city or well water for: Nitrate Nitrite Results returned within 3 business days from the receipt of the sample by the lab. Returns require pre authorization. Return shipping of the water sample to the laboratory is not included. Return of water sample needs to occur within 1 day of sampling. If you need testing to meet regulatory or litigation purposes please contact us for tests designed for this purpose. Recommended by the United