| Maine | |||||||||
| TOTAL PERSONS | TOTAL HOUSING UNITS | PUBLIC SYSTEM | DRILLED WELL | DUG WELL | OTHER SOURCE | PUBLIC SEWER | SEPTIC TANK | OTHER MEANS | |
| Maine | 1,227,928 | 587,045 | 312,299 | 190,639 | 55,192 | 28,915 | 266,344 | 301,373 | 19,328 |
| .Androscoggin County | 105259 | 43815 | 31483 | 7523 | 3922 | 887 | 29447 | 13930 | 438 |
| .Aroostook County | 86936 | 38,421 | 16,851 | 16,563 | 2375 | 2632 | 17,285 | 19,748 | 1388 |
| .Cumberland County | 243135 | 109,890 | 77,178 | 22,234 | 7134 | 3344 | 64,642 | 44,057 | 1191 |
| .Franklin County | 29008 | 17,280 | 7,809 | 4,760 | 3187 | 1524 | 5,338 | 10,825 | 1117 |
| .Hancock County | 46948 | 30,396 | 7,570 | 17,437 | 3,127 | 2262 | 7,084 | 21,557 | 1755 |
| .Kennebec County | 115,904 | 51,648 | 27,376 | 18,651 | 3604 | 2017 | 25,069 | 25,673 | 906 |
| .Knox County | 36,310 | 19,009 | 8,863 | 8,175 | 1167 | 804 | 6,266 | 11,963 | 780 |
| .Lincoln County | 30,357 | 17,538 | 4,128 | 10,596 | 1707 | 1107 | 2,582 | 14,430 | 526 |
| .Oxford County | 52,602 | 29,689 | 11,369 | 7,871 | 8,350 | 2099 | 9,131 | 18,603 | 1955 |
| .Penobscot County | 146,601 | 61,359 | 35,373 | 20,458 | 2746 | 2782 | 33,532 | 25,771 | 2056 |
| .Piscataquis County | 18,653 | 13,194 | 4,640 | 5,142 | 1,196 | 2216 | 3,890 | 7,212 | 2092 |
| .Sagadahoc County | 33535 | 14633 | 7749 | 5579 | 1051 | 254 | 6330 | 8017 | 286 |
| .Somerset County | 49767 | 24927 | 11340 | 8958 | 3273 | 1356 | 9142 | 14630 | 1155 |
| .Waldo County | 33018 | 16181 | 3895 | 9018 | 1413 | 1855 | 2912 | 12197 | 1072 |
| .Washington County | 35308 | 19124 | 5858 | 8210 | 2447 | 2609 | 4856 | 12425 | 1843 |
| .York County | 164587 | 79941 | 50817 | 19464 | 8493 | 1167 | 38838 | 40335 | 768 |