62 Pennsylvania water districts with results read from their own annual water quality report or EPA testing, largest first.
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- Aqua Pa Main System822,600 people · 21 results
- Pittsburgh Water & Sewer Auth520,000 people · 10 results
- York Water Co206,762 people · 13 results
- West View Water Authority200,000 people · 9 results
- Chester Water Authority140,437 people · 9 results
- City of Lancaster120,000 people · 11 results · 1 over a limit
- Lca Allentown Division118,000 people · 18 results
- City of Bethlehem117,259 people · 5 results
- North Wales Water Authority72,496 people · 18 results
- State College Boro Water Auth72,000 people · 10 results
- Hampton Shaler Water Authority61,949 people · 12 results
- Aqua Pa Bensalem59,001 people · 6 results
- Bcwsa Main Lower South52,621 people · 18 results
- Greater Johnstown Wa Riverside49,500 people · 7 results
- Aqua Pa West Chester48,600 people · 13 results
- Aqua Pa Shenango Valley Wtp48,000 people · 3 results
- Aqua Pa Roaring Creek Division43,000 people · 3 results
- Hanover Muni Water Works40,900 people · 8 results
- Warminster Municipal Authority40,000 people · 11 results
- Penn State Univ37,000 people · 7 results
- Aqua Pa Uwchlan35,518 people · 12 results
- Chambersburg Boro Water Sys31,048 people · 7 results
- Brodhead Creek Reg Water Auth30,000 people · 11 results
- Aqua Pa Bristol28,727 people · 8 results
- Carlisle Water Trmt Plt26,000 people · 12 results
- Horsham Water&Sewer Authority26,000 people · 12 results
- Columbia Water Co25,200 people · 10 results
- Ephrata Area Joint Authority24,500 people · 12 results
- Nwwa Warrington Township21,588 people · 22 results
- Dover Twp Water Sys21,097 people · 14 results
- Ambler Boro Water Dept20,000 people · 13 results
- Bradford City Water Authority18,500 people · 3 results
- Phoenixville Water Dept16,599 people · 9 results
- Aqua Pa Susquehanna Division15,569 people · 9 results
- Aqua Pa Hatboro12,901 people · 12 results
- Aqua Pa Superior Main System11,400 people · 16 results
- Aqua Shenandoah9,500 people · 5 results
- Aqua Pa Friendship8,800 people · 12 results
- Aqua Pa Spring Run8,151 people · 13 results
- Aqua Pa Fawn Lake Forest6,533 people · 11 results
- Aqua Pa Chalfont5,900 people · 12 results
- Aqua Pa Water Co Honesdale5,500 people · 14 results
- Aqua Pa Flying Hills Wa Sys5,100 people · 3 results
- Aqua Pa Jenks Twp Wtp4,320 people · 7 results
- Aqua Pa INC Treasure Lake Div4,155 people · 9 results
- Aqua Pa Perkiomen Township3,600 people · 12 results
- Aqua Pa Water Co Sci Waymart3,200 people · 11 results
- Aqua Pa Beech Mountain2,646 people · 11 results
- Aqua Pa Midway2,450 people · 5 results
- Aqua Pa Monroe Twp2,400 people · 16 results
- Aqua Pa Factoryville2,323 people · 5 results
- Aqua Pa Crawford Div2,300 people · 7 results
- Aqua Pa Water Co Hawley1,800 people · 10 results
- Aqua Pa Honeybrook1,600 people · 9 results
- Aqua Pa Lake Latonka Wtp1,600 people · 9 results
- Aqua Pa Hamilton Water Co1,500 people · 9 results
- Aqua Pa Mountainhome System1,450 people · 9 results
- Aqua Pa Sand Springs1,383 people · 9 results
- Aqua Pa Tanglewood Lakes1,321 people · 10 results
- Aqua Pa Mifflin Township1,220 people · 9 results
- Aqua Pa White Haven1,200 people · 11 results
- Aqua Pa Perkiomen Woods1,100 people · 10 results
Other districts with a few results read
Search these in the water lookup to see their numbers.
- Hca Hazleton Division · 45,000 people
- St Marys Area Water Auth · 19,588 people