• Ansonia (1868)
• Bethany (1868)
• Birmingham and Derby (1868)
• Branford (1868)
• Cheshire (1868)
• Derby (1868)
• East Haven (1868)
• Fair Haven Water Co's Reservoirs (1868)
• Guilford (1868)
• Hamden (1868)

• Madison (1868)
• Meriden (1868)
• Middlebury (1868)
• Milford (1868)
• Naugatuck (1868)
• New Haven (1868)
• New Haven (1911)
• North Branford (1868)
• North Haven (1868)
• Orange (1868)

• Prospect (1868)
• Seymour (1868)
• Southbury (1868)
• Wallingford (1868)
• Waterbury (1868)
• West Haven (1868)
• Westville (1868)
• Wolcott (1868)
• Woodbridge (1868)