榆林市无定河流域水污染防治条例/Chapter 4 饮用水水源和水生态保护Article 49In force禁止在饮用水水源保护区内设置排污口。Local Regulations · 榆林市人民代表大会常务委员会 · In force from August 15, 2026Article 48Back to full textArticle 50