My parents house had and still has a lead water pipe coming up from the basement. Most of the established municipalites use a large amount of lead in water mains..... Food for thought. If it doesnt taste right or has an oil slick on it I wouldnt touch it, but if it tastes fine................. In the mean time replace that elbow with food grade SS. For any metal part you want to wash it with dawn, boil it, wash it with dawn and boil it again before first use, as most if not all metals are cooled with oil during manufature.
Primary 1: Citrarillo IPA
Primary 2: Big Baltic Porter
Primary 3: Full Nelson Pale Ale
Secondary 1/ Primary 4: Rochefort 9
Bottled: Zombie Dust, Yoopers House Ale, DFH 90 clone, Two Hearted Ale, Dead Guy, Dundalk Irish Heavy