These are the results for sites sampled April 2, 2023.
For comprehensive results going back to 1983, please go to our searchable database.
The water bodies are listed alphabetically by water body name.
Alkalinity is reported in mg/L as CaCO3.
| Name | Town | Palsaris | pH | ANC |
| Aldrich Brook | Millville | 5131425 | 6.15 | 3.2 |
| Angeline Brook | Westport | 9560000 | 5.01 | -0.4 |
| Anthony Brook | Dalton | 2105425 | 6.42 | 2.4 |
| Ashby Reservoir | Ashby | 81001 | 6.15 | 2.2 |
| Ashfield Lake | Ashfield | 33001 | 7.17 | 32.7 |
| Babcock Brook | Tolland | 3107625 | 5.69 | 4.0 |
| Bagg Brook | West Springfield | 3417750 | 7.65 | 74.0 |
| Baker Brook | Gardner | 3524050 | 5.31 | 1.6 |
| Bartlett Pond Brook | Leominster | 8146000 | 5.30 | 0.4 |
| Barton Brook | Dalton | 2105350 | 6.89 | 10.0 |
| Bassett Brook | Raynham | 6236100 | 6.31 | 8.4 |
| Bassett Pond | New Salem | 35002 | 5.88 | 0.9 |
| Beagle Club Pond | Dartmouth | 371 | 6.92 | 10.1 |
| Beaman Brook | Winchendon | 3523825 | 5.72 | 2.0 |
| Belmont Reservoir | Hinsdale | 21010 | 5.44 | 0.7 |
| Benton Brook | Otis | 3107375 | 6.30 | 9.2 |
| Bickford Pond | Hubbardston | 36015 | 6.39 | 3.3 |
| Bilodeau Brook | Hinsdale | 2105750 | 6.93 | 10.9 |
| Black Brook | Hamilton | 9253700 | 6.48 | 16.9 |
| Black Brook | Warwick | 3522675 | 6.36 | 1.9 |
| Blossom Brook | Fall River | 6134700 | 4.66 | -1.4 |
| Blue Hills Reservoir | Qunicy | 73004 | 7.55 | 13.9 |
| Bog Pond | Savoy | 33003 | 6.13 | 3.8 |
| Boston Brook | Middleton | 9253925 | 6.86 | 17.5 |
| Bozrah Brook | Hawley | 3315325 | 7.07 | 8.1 |
| Brass Mill Pond | Williamsburg | 34011 | 6.70 | 12.0 |
| Bread And Cheese Brook | Westport | 9560150 | 6.16 | 3.1 |
| Buck Pond | Westfield | 32012 | 6.85 | 17.0 |
| Bungay River | North Attleborough | 5233750 | 6.70 | 22.3 |
| Cadwell Creek | Pelham | 3626575 | 5.92 | 0.7 |
| Cady Brook | Washingon | 2105725 | 6.65 | 8.40 |
| Cheshire Reservoir North | Cheshire | 11002 | 8.18 | 94.7 |
| Clear Run Brook | Seekonk | 5334150 | 6.87 | 37.5 |
| Cloverdale Street Pond | Rutland | 36036 | 6.50 | 8.3 |
| Cobble Mountain Reservoir | Blandford | 32018 | 6.74 | 7.0 |
| Coes Reservoir | Worcester | 51024 | 7.02 | 19.3 |
| College Pond | Plymouth | 95030 | 6.48 | 2.5 |
| Cowee Pond | Garner | 35013 | 5.23 | 0.2 |
| Cronin Brook | Grafton | 5132625 | 6.73 | 7.1 |
| Crystal Lake | Palmer | 36043 | 5.99 | 1.0 |
| Dorothy Brook | Worcester | 5132700 | 6.74 | 20.2 |
| Duck Pond | Groton | 84083 | 6.67 | 6.7 |
| East Branch Swift River | Barre | 3627200 | 6.37 | 2.2 |
| East Brimfield Reservoir | Brimfield | 41014 | 6.26 | 5.2 |
| East Oxbow Brook | Charlemont | 3314925 | 6.52 | 2.9 |
| Ezekiel Pond | Plymouth | 95051 | 6.71 | 3.9 |
| Farm Pond | Sherborn | 72039 | 6.91 | 4.5 |
| Fiske Pond | Wendell | 34023 | 5.43 | 0.3 |
| Flat Brook | Ware | 3627500 | 6.85 | 7.9 |
| Fox Brook | Granville | 3106825 | 6.29 | 3.0 |
| French River | Oxford | 4230075 | 6.79 | 12.6 |
| Godfrey Brook | Milford | 7240375 | 7.45 | 26.2 |
| Great Pond | Wellfleet | 96117 | 6.23 | 1.0 |
| Greenwood Pond | Templeton | 35026 | 5.37 | 1.2 |
| Grove Pond | Ayer | 81053 | 7.02 | 17.2 |
| Gulf Brook | Pepperell | 8143675 | 7.00 | 11.2 |
| Hartwell Brook | Charlemont | 3315075 | 7.30 | 13.1 |
| Hatches Creek | Eastham | 9661525 | 6.33 | 8.2 |
| Hawley Reservoir | Pelham | 34031 | 6.17 | 1.5 |
| Heald Pond | Pepperell | 81056 | 7.10 | 15.6 |
| Hedges Pond | Plymouth | 94065 | 6.44 | 2.4 |
| Hinsdale Brook | Shelburne | 3313175 | 7.86 | 37.1 |
| Holden Reservoir | Holden | 51063 | 6.70 | 5.6 |
| Hop Brook | New Salem | 3627000 | 6.74 | 4.2 |
| Indian Pond | Kingston | 94072 | 6.48 | 11.2 |
| Ipswich River | Ipswich | 9253500 | 6.95 | 25.4 |
| Johnson Pond | Raynham | 62097 | 6.12 | 5.0 |
| Kenny Brook | Royalston | 3523750 | 6.01 | 1.4 |
| Kickamuit River | Swansea | 6134500 | 6.38 | 9.0 |
| Kilburn Brook | Peru | 2105700 | 6.64 | 4.1 |
| King Phillip Brook | Fall River | 6134725 | 4.65 | -0.5 |
| Kinnacum Pond | Wellfleet | 96163 | 5.39 | 0.3 |
| Kinsman Brook | Heath | 3314450 | 6.90 | 6.5 |
| Lake Rohunta; South Basin | Athol | 35107 | 6.39 | 2.7 |
| Lake Denison | Winchendon | 35017 | 5.90 | 2.4 |
| Lake Garfield | Monterey | 21040 | 7.88 | 50.0 |
| Lake Lorraine | Springfield | 36084 | 6.55 | 10.0 |
| Lake Pearl | Wrentham | 72092 | 6.97 | 24.0 |
| Lake Wampanoag | Ashburhnham | 81151 | 5.09 | 0.4 |
| Lake Watatic | Ashburnham | 35095 | 6.12 | 3.4 |
| Lake Wyola | Shutesbury | 34103 | 6.39 | 1.8 |
| Little River | Westfield | 3208725 | 6.85 | 8.0 |
| Little Sandy Pond | Plymouth | 95092 | 6.74 | 5.2 |
| Long Pond | Great Barrington | 21062 | 8.02 | 79.0 |
| Lord Brook | Rowe | 3316550 | 6.35 | 1.6 |
| Lynde Brook Reservoir | Leicester | 51090 | 7.16 | 17.0 |
| Maynard Brook | Oakham | 3626475 | 5.63 | 1.1 |
| Mcgovern Brook | Lancaster | 8144725 | 7.31 | 15.3 |
| Mill River | Conway | 3419825 | 7.36 | 28.7 |
| Millham Brook | Marlborough | 8247475 | 7.26 | 24.3 |
| Moores Pond | Warwick | 35048 | 6.20 | 2.1 |
| New Long Pond | Plymouth | 95112 | 6.19 | 0.6 |
| Nipmuck Pond | Webster | 42039 | 5.74 | 1.6 |
| Noquockoke Lake | Dartmouth | 95170 | 6.24 | 3.8 |
| North River | Colrain | 3314100 | 7.05 | 9.9 |
| North Watuppa Lake | Fall River | 61004 | 6.16 | 1.6 |
| Phoenix Pond; Double Pd | Shirley | 81100 | 7.17 | 17.4 |
| Plain Street Pond | Mansfield | 52032 | 6.58 | 12.4 |
| Plainfield Pond | Plainfield | 33017 | 5.85 | 0.3 |
| Pleasant Street Pond | Franklin | 72095 | 7.06 | 20.9 |
| Quabbin Res.Station 202 | Belchertown | 36129 | 6.74 | 3.8 |
| Rattlesnake Brook | Freetown | 6235125 | 5.36 | 0.5 |
| Robbins Brook | Winchendon | 3524250 | 5.75 | 1.3 |
| Robbins Pond | Harvard | 81111 | 7.77 | 55.4 |
| Robinson Brook | Pepperell | 8143825 | 7.38 | 21.7 |
| Rocky Run | Rehoboth | 5334100 | 6.60 | 10.8 |
| Round Meadow Brook | Mendon | 5131275 | 6.17 | 5.2 |
| Round Pond | Brewster | 96264 | 5.61 | 0.3 |
| Sandy Pond | Ayer | 81117 | 6.82 | 8.0 |
| Scarborough Pond | Belchertown | 34080 | 6.18 | 2.6 |
| Sewall Brook | Boylston | 5132600 | 6.94 | 16.6 |
| Shingle Brook | Shelburne | 3313850 | 7.72 | 50.5 |
| Shingle Island Brook | Freetown | 188 | 5.55 | 1.7 |
| Sleepy Hollow Brook | Richmond | 2104200 | 7.84 | 99.6 |
| Soda Creek | Sheffield | 2103725 | 7.24 | 31.0 |
| Spectacle Pond | Warehem | 95142 | 6.74 | 5.8 |
| Stony Brook Pond | Norfolk | 72113 | 6.99 | 23.7 |
| Storrow Pond | Westwood | 72115 | 6.42 | 4.3 |
| Stump Pond | Gardner | 35085 | 5.42 | 1.5 |
| Sucker Brook | New Braintree | 3625975 | 6.39 | 5.7 |
| Thompsons Pond | Spencer | 36155 | 6.67 | 6.5 |
| Todd Brook | Charlemont | 3316050 | 5.53 | -0.2 |
| Torrey Creek | Seekonk | 5334075 | 6.35 | 17.1 |
| Towne Brook | Royalston | 3524200 | 5.41 | 0.8 |
| Trout Pond | Tolland | 31042 | 5.50 | 3.0 |
| Tully Pond | Orange | 35089 | 6.46 | 2.5 |
| Turner Pond | New Bedford | 95151 | 5.14 | 0.7 |
| Underwood Brook | Heath | 3314650 | 6.68 | 3.2 |
| Upper Attitash Pond | Kingston | 84072 | 7.35 | 17.2 |
| Upper Mystic Lake | Winchester | 71043 | 7.57 | 39.2 |
| Upper Naukeag Lake | Ashburhnam | 35090 | 6.00 | 1.8 |
| Upper Spectacle Pond | Sandisfield | 31044 | 6.21 | 6.0 |
| Valley Brook | Granville | 3107700 | 6.19 | 4.0 |
| Vincent Brook | Colrain | 3314550 | 7.11 | 9.0 |
| Walker Brook | Becket | 3210300 | 6.79 | 9.6 |
| Wallis Reservoir | Douglas | 51179 | 5.89 | 1.6 |
| Wellington Brook | Oxford | 4230325 | 6.90 | 17.8 |
| West Br Ware River | Hubbardston | 3628175 | 6.32 | 2.3 |
| West Branch Swift River | Shutesbury | 3626800 | 5.77 | 0.8 |
| Whitehall Reservoir | Hopkinton | 82120 | 6.50 | 5.5 |
| Wilder Brook | Gardner | 3523950 | 5.02 | 0.2 |
| Williams River | West Stockbridge | 2104100 | 7.89 | 118.8 |
| Winnecunnet Pond | Norton | 62213 | 6.81 | 10.8 |
| Wright Pond | Ashby | 81160 | 6.25 | 3.3 |