Radium, combined (-226 and -228)
Baton Rouge Water Company
Radium is a radioactive element that causes bone cancer and other cancers. It can occur naturally in groundwater, and oil and gas extraction activities such as hydraulic fracturing can elevate concentrations. Read More.
Radium releases radioactive particles that harm health in many ways, causing tumors in bone, lungs and other organs; leukemia; and skin and blood damage. Water utilities typically report radium amounts in picocuries per liter (pCi/L), which is a measure of radioactivity in water. The two most common forms of radium are radium-226 and radium-228. They may be reported separately or together.
Federal law allows up to 5 picocuries per liter of combined radium-226 and radium-228 in tap water. Research by the U.S. Geological Survey shows that in some regions of the country, such as the mid-continental region and North Atlantic coastal region, more than 20 percent of sampled wells have radium in levels exceeding the federal drinking water limit. And the legal limit does not equate safety: The EPA estimates that one in every 10,000 people drinking water containing radium at this level would develop cancer over a lifetime.
California set a public health goal much lower than the federal limit – 0.05 picocuries per liter of radium-226 and 0.019 picocuries per liter of radium-228, concentrations that are lower than the detection limit for most water tests.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 0.25 pCi/L | 64 | 21 | ND - 1.33 pCi/L |
| 2019 | 0.25 pCi/L | 75 | 22 | ND - 1.69 pCi/L |
| 2020 | 0.11 pCi/L | 134 | 26 | ND - 1.01 pCi/L |
| 2021 | 0.05 pCi/L | 99 | 8 | ND - 0.83 pCi/L |
| 2022 | 0.12 pCi/L | 97 | 18 | ND - 0.98 pCi/L |
| 2023 | 0.21 pCi/L | 119 | 31 | ND - 4.81 pCi/L |
pCi/L = picocuries per liter
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 0.05 pCi/L
EWG applied the health guideline of 0.05 pCi/L, defined by the California Office of Environmental Health Hazard Assessment as a public health goal for radium-226, to radium-226 and radium-228 combined. This health guideline protects against cancer.
EPA Maximum Contaminant
Level (MCL): 5 pCi/L
The legal limit for combined radium-226 and radium-228, established in 1976, was based on costs for radium removal, as calculated at the time that the standard was set. This limit does not fully protect against the risk of cancer due to radium exposure.
pCi/L = picocuries per liter
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-01-11 | 35369996001 | ND |
| 2018-01-11 | 35369996002 | 0.90 pCi/L |
| 2018-01-11 | 35369996001 | ND |
| 2018-01-11 | 35369996002 | 0.90 pCi/L |
| 2018-01-29 | 35371282004 | ND |
| 2018-01-29 | 35371282004 | ND |
| 2018-03-12 | 35379759001 | ND |
| 2018-03-12 | 35379759002 | ND |
| 2018-03-12 | 35379759001 | ND |
| 2018-03-12 | 35379759002 | ND |
| 2018-04-10 | 35385805004 | 0.53 pCi/L |
| 2018-04-10 | 35385805005 | ND |
| 2018-04-10 | 35385805004 | 0.53 pCi/L |
| 2018-04-10 | 35385805005 | ND |
| 2018-04-17 | 35386963001 | ND |
| 2018-04-17 | 35386963002 | ND |
| 2018-04-17 | 35386963003 | ND |
| 2018-04-17 | 35386963004 | ND |
| 2018-04-17 | 35386963001 | ND |
| 2018-04-17 | 35386963002 | ND |
| 2018-04-17 | 35386963003 | ND |
| 2018-04-17 | 35386963004 | ND |
| 2018-04-17 | 2005-01943-001 | ND |
| 2018-06-11 | 35398105001 | 0.36 pCi/L |
| 2018-06-11 | 35398105002 | 0.79 pCi/L |
| 2018-06-11 | 35398105001 | 0.36 pCi/L |
| 2018-06-11 | 35398105002 | 0.79 pCi/L |
| 2018-09-20 | 35419431001 | 0.89 pCi/L |
| 2018-09-20 | 35419431002 | ND |
| 2018-09-20 | 35419431003 | ND |
| 2018-09-20 | 35419431004 | ND |
| 2018-09-20 | 35419431001 | 0.89 pCi/L |
| 2018-09-20 | 35419431002 | ND |
| 2018-09-20 | 35419431003 | ND |
| 2018-09-20 | 35419431004 | ND |
| 2018-09-20 | 2312-01359-001 | ND |
| 2018-09-24 | 35420620001 | ND |
| 2018-09-24 | 35420620002 | ND |
| 2018-09-24 | 35420620003 | ND |
| 2018-09-24 | 35420620004 | ND |
| 2018-09-24 | 35420620001 | ND |
| 2018-09-24 | 35420620002 | ND |
| 2018-09-24 | 35420620003 | ND |
| 2018-09-24 | 35420620004 | ND |
| 2018-09-24 | 2001622-01 | ND |
| 2018-09-24 | 2003796-01 | ND |
| 2018-12-03 | 35434672001 | ND |
| 2018-12-03 | 35434672002 | ND |
| 2018-12-03 | 35434941001 | 1.33 pCi/L |
| 2018-12-03 | 35434672001 | ND |
| 2018-12-03 | 35434672002 | ND |
| 2018-12-03 | 35434941001 | 1.33 pCi/L |
| 2018-12-04 | 35434931001 | 0.75 pCi/L |
| 2018-12-04 | 35434931002 | 0.57 pCi/L |
| 2018-12-04 | 35434931001 | 0.75 pCi/L |
| 2018-12-04 | 35434931002 | 0.57 pCi/L |
| 2018-12-04 | 2302-01766-003 | ND |
| 2018-12-04 | 2303-01547-003 | 0.57 pCi/L |
| 2018-12-11 | 35436979001 | ND |
| 2018-12-11 | 35436979002 | 0.79 pCi/L |
| 2018-12-11 | 35436979003 | 0.64 pCi/L |
| 2018-12-11 | 35436979001 | ND |
| 2018-12-11 | 35436979002 | 0.79 pCi/L |
| 2018-12-11 | 35436979003 | 0.64 pCi/L |
| 2019-01-23 | 35444341001 | 1.15 pCi/L |
| 2019-01-23 | 35444343001 | ND |
| 2019-01-23 | 35444344001 | 0.48 pCi/L |
| 2019-01-23 | 35444341001 | 1.15 pCi/L |
| 2019-01-23 | 35444343001 | ND |
| 2019-01-23 | 35444344001 | 0.48 pCi/L |
| 2019-02-14 | 35448564001 | ND |
| 2019-02-14 | 35448564002 | 0.34 pCi/L |
| 2019-02-14 | 35448564001 | ND |
| 2019-02-14 | 35448564002 | 0.34 pCi/L |
| 2019-03-14 | 35454833001 | ND |
| 2019-03-14 | 35454833002 | ND |
| 2019-03-14 | 35454833001 | ND |
| 2019-03-14 | 35454833002 | ND |
| 2019-03-14 | 2305-02321-001 | ND |
| 2019-03-18 | 35455451001 | ND |
| 2019-03-18 | 35455451002 | ND |
| 2019-03-18 | 35455451003 | ND |
| 2019-03-18 | 35455451004 | ND |
| 2019-03-18 | 35455451001 | ND |
| 2019-03-18 | 35455451002 | ND |
| 2019-03-18 | 35455451003 | ND |
| 2019-03-18 | 35455451004 | ND |
| 2019-03-25 | 35457421001 | ND |
| 2019-03-25 | 35457421001 | ND |
| 2019-04-09 | 35460483001 | 0.75 pCi/L |
| 2019-04-09 | 35460483002 | 0.84 pCi/L |
| 2019-04-09 | 35460483003 | ND |
| 2019-04-09 | 35460483001 | 0.75 pCi/L |
| 2019-04-09 | 35460483002 | 0.84 pCi/L |
| 2019-04-09 | 35460483003 | ND |
| 2019-04-24 | 35464166001 | ND |
| 2019-04-24 | 35464166002 | ND |
| 2019-04-24 | 35464166003 | ND |
| 2019-04-24 | 35464166004 | 0.36 pCi/L |
| 2019-04-24 | 35464166001 | ND |
| 2019-04-24 | 35464166002 | ND |
| 2019-04-24 | 35464166003 | ND |
| 2019-04-24 | 35464166004 | 0.36 pCi/L |
| 2019-04-24 | DIR03082022-2 | ND |
| 2019-04-24 | DIR03302021-2 | ND |
| 2019-04-29 | 35464817001 | ND |
| 2019-04-29 | 35464817002 | ND |
| 2019-04-29 | 35464817001 | ND |
| 2019-04-29 | 35464817002 | ND |
| 2019-05-16 | 35469376001 | ND |
| 2019-05-16 | 35469376002 | 0.49 pCi/L |
| 2019-05-16 | 35469376001 | ND |
| 2019-05-16 | 35469376002 | 0.49 pCi/L |
| 2019-05-16 | 2113455-01 | ND |
| 2019-05-16 | 2115423-01 | ND |
| 2019-08-21 | 35492794001 | ND |
| 2019-08-21 | 35492794002 | ND |
| 2019-08-21 | 35492794003 | ND |
| 2019-08-21 | 35492794001 | ND |
| 2019-08-21 | 35492794002 | ND |
| 2019-08-21 | 35492794003 | ND |
| 2019-08-21 | 2003715-01 | ND |
| 2019-08-21 | 2312-00884-002 | ND |
| 2019-10-07 | 35503317004 | 1.69 pCi/L |
| 2019-10-07 | 35503317004 | 1.69 pCi/L |
| 2019-10-28 | 35508802001 | ND |
| 2019-10-28 | 35508802001 | ND |
| 2019-11-20 | 35514423001 | ND |
| 2019-11-20 | 35514423001 | ND |
| 2019-12-03 | 35516732001 | 1.37 pCi/L |
| 2019-12-03 | 35516732002 | 1.27 pCi/L |
| 2019-12-03 | 35516732003 | ND |
| 2019-12-03 | 35516732001 | 1.37 pCi/L |
| 2019-12-03 | 35516732002 | 1.27 pCi/L |
| 2019-12-03 | 35516732003 | ND |
| 2019-12-04 | 35516731001 | ND |
| 2019-12-04 | 35516731002 | 0.61 pCi/L |
| 2019-12-04 | 35516731001 | ND |
| 2019-12-04 | 35516731002 | 0.61 pCi/L |
| 2020-01-09 | 35523487003 | 0.23 pCi/L |
| 2020-01-09 | 2021517-COMBINED SPRINGS POINT | ND |
| 2020-01-09 | 2021524-RAW WATER: CROSS ST. W | 0.23 pCi/L |
| 2020-01-16 | 35525044001 | ND |
| 2020-01-16 | 35525044002 | ND |
| 2020-01-16 | 2021422-GP WELL #11 | ND |
| 2020-01-16 | 2021513-FINISHED WATER: MAIN W | ND |
| 2020-01-16 | 2021615-RAW WATER: WELL #2 | ND |
| 2020-01-16 | 2021623-POINT OF ENTRY POST TR | ND |
| 2020-01-23 | 35526391002 | ND |
| 2020-01-23 | 2021427-RAW WATER: WELL #2 | ND |
| 2020-01-23 | 2021517-COMBINED SPRINGS POINT | ND |
| 2020-02-10 | 35529942002 | ND |
| 2020-02-10 | 2021414-NOTOWN WTP: AFTER TREA | ND |
| 2020-02-10 | 2021521-1465 MAIN ST - FAMILY | ND |
| 2020-04-14 | 35543877001 | ND |
| 2020-04-14 | 35543877002 | ND |
| 2020-04-14 | 35543877003 | ND |
| 2020-04-14 | 2021426-WELL #1 | ND |
| 2020-04-14 | 202145-TREATED: SOUTH ST. WTF | ND |
| 2020-04-14 | 2021511-QUABOAG ST. PUMP STATI | ND |
| 2020-04-14 | 2021524-RAW WATER: WELL #3 | ND |
| 2020-04-14 | 202166-ROCK WELL #1 | ND |
| 2020-04-27 | 35546220001 | ND |
| 2020-04-27 | 35546220002 | ND |
| 2020-04-27 | 35546220003 | ND |
| 2020-04-27 | 2021412-SAM BROOKS HOME | ND |
| 2020-04-27 | 2021414-NOTOWN WTP: AFTER TREA | ND |
| 2020-04-27 | 2021420-POINT OF ENTRY | ND |
| 2020-04-27 | 2021429-FINISHED: FRUIT ST PUM | ND |
| 2020-04-27 | 202146-WELL #8 RAW | ND |
| 2020-04-27 | 2021517-COMBINED SPRINGS POINT | ND |
| 2020-04-28 | 35546711001 | ND |
| 2020-04-28 | 35546711002 | 0.26 pCi/L |
| 2020-04-28 | 2021420-MAPLE SPRINGS PLANT - | ND |
| 2020-04-28 | 2021511-FINISHED: TREATMENT FA | ND |
| 2020-04-28 | 202168-BADDACOOK POND WELL (TR | 0.26 pCi/L |
| 2020-04-28 | 202168-MYERS AVE.WELLS MULTIPL | ND |
| 2020-05-04 | 35547452001 | ND |
| 2020-05-04 | 35547452002 | 1.01 pCi/L |
| 2020-05-04 | 35547452003 | ND |
| 2020-05-04 | 35548017002 | ND |
| 2020-05-04 | 2021419-GREAT POND WTP FINISHE | ND |
| 2020-05-04 | 2021420-WELL 1 SOURCE SAMPLE ( | ND |
| 2020-05-04 | 2021427-RAW WATER: WELL #7 | ND |
| 2020-05-04 | 2021512-WELL #4 GREAT ROAD WTP | ND |
| 2020-05-04 | 202154-WELL #2 SOURCE WATER SA | ND |
| 2020-05-04 | 2021614-FINISHED: ENTRY POINT | ND |
| 2020-05-04 | 2021615-12 WINTER ST - DPW HWY | ND |
| 2020-05-04 | 2021615-WELL #6 | 1.01 pCi/L |
| 2020-05-05 | 35548017001 | 0.55 pCi/L |
| 2020-05-05 | 202146-WELL # 7 | 0.55 pCi/L |
| 2020-05-05 | 2021524-WELL #2 PUMPHOUSE | ND |
| 2020-05-20 | 35551551001 | ND |
| 2020-05-20 | 35551551002 | ND |
| 2020-05-20 | 35551551003 | ND |
| 2020-05-20 | 2021416-WHITE LODGE WTP (6G,7G | ND |
| 2020-05-20 | 2021421-POINT OF ENTRY POST TR | ND |
| 2020-05-20 | 202145-HUGH CARGILL WELLFIELD | ND |
| 2020-05-20 | 202147-POINT OF ENTRY | ND |
| 2020-05-20 | 2021519-FINISHED: FRUIT ST PUM | ND |
| 2020-05-20 | 2021614-FINISHED: WELL #5 | ND |
| 2020-06-17 | 35557442001 | ND |
| 2020-06-17 | 35557443001 | 0.35 pCi/L |
| 2020-06-17 | 35557443002 | ND |
| 2020-06-17 | 2021412-KARNER BROOK WTP POST | 0.35 pCi/L |
| 2020-06-17 | 2021414-FINISHED: WARE POINT R | ND |
| 2020-06-17 | 2021415-WELL 2 SOURCE WATER TA | ND |
| 2020-06-17 | 202145-FINISHED WATER: POND RD | ND |
| 2020-06-17 | 2021615-RAW WATER: WELL #2 | ND |
| 2020-06-17 | 2021616-FINISHED: BLACKSTONE S | ND |
| 2020-06-22 | 35558211001 | ND |
| 2020-06-22 | 35558211002 | ND |
| 2020-06-22 | 35558211003 | 0.81 pCi/L |
| 2020-06-22 | 2021419-GREAT POND WTP FINISHE | ND |
| 2020-06-22 | 2021421-SPRING STREET WELL | 0.81 pCi/L |
| 2020-06-22 | 2021623-HARRIS POND RAW | ND |
| 2020-06-22 | 202168-MYERS AVE.WELLS MULTIPL | ND |
| 2020-06-22 | 202169-RAW WATER: WELL #1 | ND |
| 2020-06-22 | 202169-REPLACEMENT WELL #3 | ND |
| 2020-06-23 | 35558519001 | ND |
| 2020-06-23 | 35558519002 | ND |
| 2020-06-23 | 35558519003 | 0.69 pCi/L |
| 2020-06-23 | 2021426-RAW: GREEN ST. BEDROCK | 0.69 pCi/L |
| 2020-06-23 | 2021517-SLF BUILDING-CENTRAL A | ND |
| 2020-06-23 | 202154-TERRACE HALL # 2 (02G) | ND |
| 2020-06-23 | 202155-COHASSET WTP - FIN | ND |
| 2020-06-23 | 2021623-CHESTNUT WTF POST TREA | ND |
| 2020-06-23 | 202168-TRACKLE POND WELL | ND |
| 2020-07-21 | 35565371003 | 0.89 pCi/L |
| 2020-07-21 | 35565371004 | ND |
| 2020-07-21 | 2021414-MCKEON TREATMENT PLANT | ND |
| 2020-07-21 | 202146-STATION 3: BIGELOW RD. | 0.89 pCi/L |
| 2020-07-21 | 2021526-FACILITY #1 | ND |
| 2020-07-21 | 202169-RAW WATER: WELL #1 | ND |
| 2020-07-22 | 35565371001 | ND |
| 2020-07-22 | 35565371002 | 0.85 pCi/L |
| 2020-07-22 | 2021426-RAW: GREEN ST. BEDROCK | ND |
| 2020-07-22 | 2021428-RAW WATER: SHABOKIN RE | ND |
| 2020-07-22 | 2021520-POINT OF ENTRY POST TR | 0.85 pCi/L |
| 2020-07-22 | 2021526-PINE OAKS WELL # 1 | ND |
| 2020-07-29 | 35567065001 | 0.30 pCi/L |
| 2020-07-29 | 35567065002 | 0.41 pCi/L |
| 2020-07-29 | 2021426-POND ST. WELL 1 | 0.30 pCi/L |
| 2020-07-29 | 202147-POINT OF ENTRY | ND |
| 2020-07-29 | 2021512-RAW WATER: WELL #2 JER | 0.41 pCi/L |
| 2020-07-29 | 2021610-GP: PFAS AIX 75% LEAD | ND |
| 2020-08-04 | 35567840001 | ND |
| 2020-08-04 | 35567840002 | ND |
| 2020-08-04 | 2021512-WELL #4 GREAT ROAD WTP | ND |
| 2020-08-04 | 2021520-WEST BILLERICA FIRE ST | ND |
| 2020-08-04 | 2021615-WELL #9 | ND |
| 2020-08-04 | 2021616-FINISHED: LOWELL & DUD | ND |
| 2020-09-15 | 35578514001 | 0.65 pCi/L |
| 2020-09-15 | 202145-WELL #5 SOURCE TAP | ND |
| 2020-09-15 | 202164-RAW: LANCASTER AVE TWF | 0.65 pCi/L |
| 2020-10-12 | 35584260001 | ND |
| 2020-10-12 | 35584260002 | ND |
| 2020-10-12 | 2021413-WELL #2 | ND |
| 2020-10-12 | 2021517-WATERTOWN - 99 MAIN ST | ND |
| 2020-10-12 | 2021615-WELL #9 | ND |
| 2020-10-12 | 202167-2060 WASHINGTON ST - OC | ND |
| 2020-10-26 | 35587659001 | 0.37 pCi/L |
| 2020-10-26 | 35587659002 | ND |
| 2020-10-26 | 202142-TREATED: WELL #3 - CHUR | 0.37 pCi/L |
| 2020-10-26 | 2021426-RAW WATER BLEND: CHEST | ND |
| 2020-10-26 | 2021512-HINGHAM ANIMAL CLINIC | ND |
| 2020-10-26 | 2021617-FINISHED: SNAKE POND W | ND |
| 2020-12-08 | 35597584001 | ND |
| 2020-12-08 | 35597584002 | ND |
| 2020-12-08 | 2021413-RAW WATER: EAST ST. WE | ND |
| 2020-12-08 | 2021526-FACILITY #1 | ND |
| 2020-12-08 | 202155-PHILIP BEAL TREATMENT P | ND |
| 2020-12-08 | 2021623-CHESTNUT WTF POST TREA | ND |
| 2021-01-25 | 35607409001 | ND |
| 2021-01-25 | 35607409002 | ND |
| 2021-01-25 | 20211012-HOWE ST. WTP - FINISH | ND |
| 2021-01-25 | 20211013-GP WELL # 7 | ND |
| 2021-01-25 | 20211019-RAW WATER: CRANBERRY | ND |
| 2021-01-25 | 20211027-WELL #3 RAW WATER | ND |
| 2021-03-02 | 35616426001 | 0.55 pCi/L |
| 2021-03-02 | 35616426002 | ND |
| 2021-03-02 | 35616426003 | ND |
| 2021-03-02 | 20211029-RAW WATER: WORCESTER | ND |
| 2021-03-02 | 20211122-CRANBERRY (TRAIN B) F | 0.55 pCi/L |
| 2021-03-02 | 2021113-TREATED: WACHUSETT ST. | ND |
| 2021-03-02 | 2021114-TOWNLINE HARDWARE | ND |
| 2021-03-02 | 2021126-RAW WATER: ASSABET WEL | ND |
| 2021-03-02 | 2021128-35 AINSLIE DRIVE | ND |
| 2021-03-08 | 35617863001 | ND |
| 2021-03-08 | 35617863002 | ND |
| 2021-03-08 | 20211012-FOREST ST ROCK WELL ( | ND |
| 2021-03-08 | 20211013-WELL #3 | ND |
| 2021-03-08 | 20211117-WELL #3 & WELL #4 | ND |
| 2021-03-08 | 20211123-WINTHROP ST. GP WELL | ND |
| 2021-04-27 | 35629151001 | ND |
| 2021-04-27 | 20211020-DEPOT ST. GP WELL | ND |
| 2021-04-27 | 20211118-DRAPER RD WELL #2 - R | ND |
| 2021-05-18 | 35634927002 | ND |
| 2021-05-18 | 35634927003 | ND |
| 2021-05-18 | 20211019-POINT OF ENTRY POST T | ND |
| 2021-05-18 | 20211026-WELLS #2 & #3 | ND |
| 2021-05-18 | 20211031-WELL #8 & WELL #9 (09 | ND |
| 2021-05-18 | 2021121-THORNEY LEA GOLF - 159 | ND |
| 2021-07-13 | 35647773001 | ND |
| 2021-07-13 | 35647773002 | ND |
| 2021-07-13 | 35647773003 | 0.76 pCi/L |
| 2021-07-13 | 20211018-WELLFIELD POINT OF EN | ND |
| 2021-07-13 | 20211026-REGIONAL FILTRATION P | ND |
| 2021-07-13 | 2021105-POINT OF ENTRY POST TR | ND |
| 2021-07-13 | 20211118-WELLS #1 & #2 | ND |
| 2021-07-13 | 20211221-POINT OF ENTRY POST T | 0.76 pCi/L |
| 2021-07-13 | 2021127-WELL #4 AND #5 | ND |
| 2021-07-14 | 35648187001 | ND |
| 2021-07-14 | 35648187002 | ND |
| 2021-07-14 | 20211117-ENTRY POINT AFTER BOO | ND |
| 2021-07-14 | 2021113-BARNSTABLE HIGH SCHOOL | ND |
| 2021-07-14 | 2021114-RAW WATER: WELL #6 FRU | ND |
| 2021-07-14 | 2021119-POINT OF ENTRY POST TR | ND |
| 2021-07-28 | 35651687001 | ND |
| 2021-07-28 | 35651687002 | ND |
| 2021-07-28 | 20211018-PUMPHOUSE: FINISHED W | ND |
| 2021-07-28 | 20211018-WELL #1 RAW | ND |
| 2021-07-28 | 20211020-POINT OF ENTRY POST T | ND |
| 2021-07-28 | 2021119-PLAIN ST FILTRATION PL | ND |
| 2021-08-09 | 35654155001 | ND |
| 2021-08-09 | 35654155002 | 0.83 pCi/L |
| 2021-08-09 | 2021106-BEAVER BROOK WTP EFFLU | ND |
| 2021-08-09 | 20211115-WELL #1 POINT OF ENTR | ND |
| 2021-08-09 | 2021118-CRYSTAL LAKE FILTRATIO | ND |
| 2021-08-09 | 20211221-POINT OF ENTRY POST T | 0.83 pCi/L |
| 2021-10-12 | 35670659001 | ND |
| 2021-10-12 | 35670659002 | ND |
| 2021-10-12 | 20211025-RAW WATER: WELL #2 | ND |
| 2021-10-12 | 20211116-MILLGATE RD. GP WELL | ND |
| 2021-10-12 | 2021127-WELL #3, FERRY STREET: | ND |
| 2021-10-12 | 2021129-WELL # 9 HILLMAN | ND |
| 2021-10-20 | 35672364001 | ND |
| 2021-10-20 | 20211123-ABINGTON ROCKLAND JOI | ND |
| 2021-10-20 | 20211130-WELL #1 AND #2 | ND |
| 2021-10-21 | 35672969002 | ND |
| 2021-10-21 | 35672969003 | ND |
| 2021-10-21 | 35672969004 | ND |
| 2021-10-21 | 35672969005 | ND |
| 2021-10-21 | 20211026-RAW WATER: WELL #2 | ND |
| 2021-10-21 | 2021105-POINT OF ENTRY | ND |
| 2021-10-21 | 20211115-ASHLEY WTP POST TREAT | ND |
| 2021-10-21 | 20211116-FOX HILL ROAD | ND |
| 2021-10-21 | 20211119-FINISHED: WHITIN TWF | ND |
| 2021-10-21 | 2021114-PUMPHOUSE (01G/03G) | ND |
| 2021-10-21 | 2021122-PATTON TRAIN C POST TR | ND |
| 2021-10-21 | 2021127-FINISHED: WELL #5 | ND |
| 2021-11-01 | 35675492001 | ND |
| 2021-11-01 | 35675492002 | ND |
| 2021-11-01 | 2021107-KELLY BLVD BOOSTER STA | ND |
| 2021-11-01 | 2021107-STA. #3 (GWTP) - FINIS | ND |
| 2021-11-01 | 20211118-CHICKERING DR. WELLS | ND |
| 2021-11-01 | 20211129-WELL #1 AND WELL #2 | ND |
| 2021-11-15 | 35679111001 | 0.35 pCi/L |
| 2021-11-15 | 35679111002 | ND |
| 2021-11-15 | 35679111003 | ND |
| 2021-11-15 | 35679111004 | ND |
| 2021-11-15 | 20211018-MAIN ST. GP WELL #1 | ND |
| 2021-11-15 | 20211025-WELLS #1 & #2 | ND |
| 2021-11-15 | 2021111-WELL 15 AND 16 | ND |
| 2021-11-15 | 20211118-FR - SOUTH MAIN ST - | ND |
| 2021-11-15 | 20211119-FINISHED: WOODBURY GP | ND |
| 2021-11-15 | 20211227-MUDDY POND WATER TREA | ND |
| 2021-11-15 | 2021129-PLS ELDERLY HOUSING | ND |
| 2021-11-15 | 2021129-WELL # 9 HILLMAN | 0.35 pCi/L |
| 2021-12-06 | 35683441001 | ND |
| 2021-12-06 | 2021106-BEAVER BROOK WTP EFFLU | ND |
| 2021-12-06 | 20211129-WELL #3 & WELL #6 (02 | ND |
| 2022-01-24 | 35692987001 | ND |
| 2022-01-24 | 35692987002 | ND |
| 2022-01-24 | 2022729-CRYSTAL SPRINGS BLEND | ND |
| 2022-01-24 | 202282-NEW LAWRENCE WTP - FINI | ND |
| 2022-01-24 | 2022822-WELL # 2 | ND |
| 2022-01-24 | 2022920-VINE BROOK GWTF - FINI | ND |
| 2022-02-08 | 35695937001 | ND |
| 2022-02-08 | 35695937002 | 0.24 pCi/L |
| 2022-02-08 | 2022719-POINT OF ENTRY POST TR | ND |
| 2022-02-08 | 2022913-TREATED: JERSEY PUMPHO | ND |
| 2022-02-08 | 2022914-TREATED: JACQUES WTF ( | 0.24 pCi/L |
| 2022-02-08 | 2022920-REPLACEMENT WELL #3 | ND |
| 2022-02-21 | 35699215001 | ND |
| 2022-02-21 | 35699215002 | ND |
| 2022-02-21 | 35699215003 | ND |
| 2022-02-21 | 202275-SOUTH ACTON WTP: AFTER | ND |
| 2022-02-21 | 2022818-ARLINGTON CITY HALL-73 | ND |
| 2022-02-21 | 202282-NEW LAWRENCE WTP - FINI | ND |
| 2022-02-21 | 202282-W.T.P. - FINISHED WATE | ND |
| 2022-02-21 | 202283-ION EXCHNAGE EFFLUENT T | ND |
| 2022-02-21 | 2022919-FINISHED: WELL #3 - NE | ND |
| 2022-03-14 | 35704389001 | 0.98 pCi/L |
| 2022-03-14 | 35704389002 | ND |
| 2022-03-14 | 35704389003 | 0.96 pCi/L |
| 2022-03-14 | 35704389004 | ND |
| 2022-03-14 | 35704389005 | 0.86 pCi/L |
| 2022-03-14 | 2022711-FINISHED: WELL 1 ENTRY | ND |
| 2022-03-14 | 2022719-POINT OF ENTRY POST TR | ND |
| 2022-03-14 | 2022719-TREATED WATER 01G/03G | 0.96 pCi/L |
| 2022-03-14 | 202281-PARK ST FS | 0.86 pCi/L |
| 2022-03-14 | 2022810-180 BRIDGE ST - DUNKIN | ND |
| 2022-03-14 | 2022830-WELL A2 - RAW WATER | ND |
| 2022-03-14 | 202288-POINT OF ENTRY POST TRE | 0.98 pCi/L |
| 2022-03-14 | 2022920-PLAIN ST FILTRATION PL | ND |
| 2022-03-14 | 202296-GRATTAN STREET FIRE STA | ND |
| 2022-03-14 | 202299-CLEVELAND WTP POST TREA | ND |
| 2022-04-18 | 35712260001 | ND |
| 2022-04-18 | 35712260002 | ND |
| 2022-04-18 | 35712260003 | ND |
| 2022-04-18 | 35712260004 | 0.32 pCi/L |
| 2022-04-18 | 35712260005 | ND |
| 2022-04-18 | 2022718-CHARLES RIVER WTP - FI | ND |
| 2022-04-18 | 2022719-POINT OF ENTRY POST TR | ND |
| 2022-04-18 | 2022720-POINT OF ENTRY POST TR | 0.32 pCi/L |
| 2022-04-18 | 2022817-TURNPIKE - MCDONALDS | ND |
| 2022-04-18 | 202283-ION EXCHNAGE EFFLUENT T | ND |
| 2022-04-18 | 202289-WILLIS WTP (MINE BROOK) | ND |
| 2022-04-18 | 2022914-CATACUNEMAUG RD WTP (T | ND |
| 2022-04-18 | 2022920-BOTANY WELL (01G,02G) | ND |
| 2022-04-18 | 202296-GP WELL # 5 | ND |
| 2022-04-18 | 202297-RAW WATER-WELL #2 FRUIT | ND |
| 2022-05-02 | 35715790001 | ND |
| 2022-05-02 | 35715790002 | ND |
| 2022-05-02 | 2022721-WELL #9 | ND |
| 2022-05-02 | 2022725-POINT OF ENTRY | ND |
| 2022-05-02 | 2022810-CHICKERING DR. WELL | ND |
| 2022-05-02 | 2022822-WELL # 2 | ND |
| 2022-06-20 | 35726842001 | ND |
| 2022-06-20 | 202276-CAMBRIDGE WTP - FINISH | ND |
| 2022-06-20 | 2022824-GP WELL # 4 | ND |
| 2022-08-18 | 35741196001 | ND |
| 2022-08-18 | 35741207001 | ND |
| 2022-08-18 | 35741210001 | 0.71 pCi/L |
| 2022-08-18 | 2022712-RAW WATER: LANCASTER A | ND |
| 2022-08-18 | 2022712-WELL #1 | ND |
| 2022-08-18 | 2022719-PINE ST. GP WELL | ND |
| 2022-08-18 | 202288-HOME FARM WTP: FINISHED | ND |
| 2022-08-18 | 202289-GP WELL # 2 | ND |
| 2022-08-18 | 202296-POINT OF ENTRY POST TRE | 0.71 pCi/L |
| 2022-10-25 | 35756111001 | 0.58 pCi/L |
| 2022-10-25 | 35756113001 | ND |
| 2022-10-25 | 35756114001 | 0.71 pCi/L |
| 2022-10-25 | 35756115001 | 0.62 pCi/L |
| 2022-10-25 | 2022718-ENTRY POINT TAP AFTER | ND |
| 2022-10-25 | 2022720-GP MID-POINT: BETWEEN | ND |
| 2022-10-25 | 202276-CAMBRIDGE WTP - FINISH | 0.58 pCi/L |
| 2022-10-25 | 202276-SAM BROOKS HOME | 0.62 pCi/L |
| 2022-10-25 | 2022817-LAKE NIP WELL 2B | ND |
| 2022-10-25 | 202282-NEW LAWRENCE WTP - FINI | 0.71 pCi/L |
| 2022-10-25 | 2022826-POINT OF ENTRY | ND |
| 2022-10-25 | 202288-HOME FARM WTP: FINISHED | ND |
| 2022-10-25 | 2022914-MILL POND WTP - (01S,0 | ND |
| 2022-11-16 | 35760970001 | ND |
| 2022-11-16 | 2022729-HINGHAM ST. RESERVOIR | ND |
| 2022-11-16 | 202283-BUTTERS ROW #2 - RAW WA | ND |
| 2022-11-17 | 35760970002 | ND |
| 2022-11-17 | 2022818-4548 NORTH MAIN ST | ND |
| 2022-11-17 | 2022823-RAW WATER: WELL 3A GRO | ND |
| 2022-12-05 | 35764806001 | ND |
| 2022-12-05 | 35764807001 | ND |
| 2022-12-05 | 35764808001 | ND |
| 2022-12-05 | 2022725-POINT OF ENTRY | ND |
| 2022-12-05 | 2022818-ARLINGTON CITY HALL-73 | ND |
| 2022-12-05 | 2022826-POINT OF ENTRY | ND |
| 2022-12-05 | 202283-CLARK STREET POINT OF E | ND |
| 2022-12-05 | 202288-RAW WATER #6.1 HOME FAR | ND |
| 2022-12-05 | 202296-POINT OF ENTRY POST TRE | ND |
| 2023-01-11 | 35772541001 | 0.22 pCi/L |
| 2023-01-11 | 202353-RAW WATER: NASHUA ROAD | 0.22 pCi/L |
| 2023-01-11 | 2023620-WASHINGTON PLANT | ND |
| 2023-04-10 | 35791908001 | ND |
| 2023-04-10 | 35791909001 | 0.33 pCi/L |
| 2023-04-10 | 35791910001 | 0.26 pCi/L |
| 2023-04-10 | 35791911001 | ND |
| 2023-04-10 | 35791926001 | 0.51 pCi/L |
| 2023-04-10 | 2023412-WELL #2 SOURCE TAP | 0.26 pCi/L |
| 2023-04-10 | 2023418-RAW WATER: WHITCOMB WE | ND |
| 2023-04-10 | 2023420-MID-POINT: CHESTNUT WT | ND |
| 2023-04-10 | 202344-NEPONSET STREET WTP | ND |
| 2023-04-10 | 202346-WELL # 1 | 0.51 pCi/L |
| 2023-04-10 | 2023518-MAX RESIDENCE TIME | ND |
| 2023-04-10 | 202353-TREATMENT PLANT - FINIS | ND |
| 2023-04-10 | 2023615-POINT OF ENTRY POST TR | ND |
| 2023-04-10 | 2023622-WELLS #1 & 1A OLD MARL | 0.33 pCi/L |
| 2023-04-10 | 202368-FINISHED: ENTRY POINT A | ND |
| 2023-04-17 | 35793689001 | ND |
| 2023-04-17 | 35793689002 | 0.18 pCi/L |
| 2023-04-17 | 35793689003 | ND |
| 2023-04-17 | 35793689004 | 0.22 pCi/L |
| 2023-04-17 | 35793689005 | ND |
| 2023-04-17 | 2023419-RAW WATER: POPULATIC W | ND |
| 2023-04-17 | 2023425-HENDRICK WELLFIELD RAW | ND |
| 2023-04-17 | 2023426-FINISHED: APRILLA PUMP | 0.18 pCi/L |
| 2023-04-17 | 202343-RAW WATER: WELL #1 | ND |
| 2023-04-17 | 202343-WELLS 1 & 2 | ND |
| 2023-04-17 | 202346-FINISHED:HOLBROOK ST. W | ND |
| 2023-04-17 | 2023523-CHESTNUT WTF POST TREA | ND |
| 2023-04-17 | 2023626-GP WELL #11 | ND |
| 2023-04-17 | 2023626-POINT OF ENTRY POST TR | ND |
| 2023-04-17 | 202368-MILLGATE RD. GP WELL | 0.22 pCi/L |
| 2023-05-02 | 35797178001 | 0.47 pCi/L |
| 2023-05-02 | 35797178002 | 0.80 pCi/L |
| 2023-05-02 | 35797178003 | ND |
| 2023-05-02 | 35797178004 | ND |
| 2023-05-02 | 35797181001 | 1.14 pCi/L |
| 2023-05-02 | 2023417-FINISHED: WELL # 2 | ND |
| 2023-05-02 | 2023417-WELL # 1 | ND |
| 2023-05-02 | 2023418-FINISHED: WELL #4 SOUT | ND |
| 2023-05-02 | 2023420-CYR STATION 1 | 1.14 pCi/L |
| 2023-05-02 | 202343-SHAWSHEEN AVE - RAW WAT | 0.80 pCi/L |
| 2023-05-02 | 202344-POINT OF ENTRY POST TRE | ND |
| 2023-05-02 | 202352-HAPPY HOLLOW WELL #2R - | ND |
| 2023-05-02 | 2023626-GP WELL # 8 | ND |
| 2023-05-02 | 2023627-WELL #2: SOURCE TAP | 0.23 pCi/L |
| 2023-06-14 | 35806941001 | ND |
| 2023-06-14 | 35806942001 | ND |
| 2023-06-14 | 35806944001 | ND |
| 2023-06-14 | 35806945001 | ND |
| 2023-06-14 | 2023515-STATE FOREST WELL #3 ( | ND |
| 2023-06-14 | 2023523-STATION # 2 (02G) | ND |
| 2023-06-14 | 2023524-W.T.P. - FINISHED WAT | ND |
| 2023-06-14 | 2023531-GP WELL # 4 | ND |
| 2023-06-14 | 202354-FAY MT TANK - 1ST WEEK | ND |
| 2023-06-14 | 2023628-WORCESTER ST. WELL WTP | ND |
| 2023-06-14 | 202365-GP WELL # 7 | ND |
| 2023-06-14 | 202368-TONKA VESSEL 2 SAMPLE T | ND |
| 2023-06-20 | 35808387001 | 4.81 pCi/L |
| 2023-06-20 | 35808391001 | 0.64 pCi/L |
| 2023-06-20 | 35808396001 | 0.73 pCi/L |
| 2023-06-20 | 35808411001 | 0.65 pCi/L |
| 2023-06-20 | 2023411-WELL # 1 | 0.86 pCi/L |
| 2023-06-20 | 2023419-WELL #2 RAW WATER | 3.95 pCi/L |
| 2023-06-20 | 202343-WATER DISTRICT OFFICE | 0.65 pCi/L |
| 2023-06-20 | 202343-WELLS #1,#2 (01G,02G) | ND |
| 2023-06-20 | 202345-ENTRY POINT AFTER BOOST | ND |
| 2023-06-20 | 2023516-70 WYNDHURST DR - 3RD | 0.64 pCi/L |
| 2023-06-20 | 2023518-POND ST TREATMENT PLAN | 0.73 pCi/L |
| 2023-06-20 | 2023615-WELL #2 SOURCE TAP | ND |
| 2023-06-26 | 35809323001 | ND |
| 2023-06-26 | 35809330001 | ND |
| 2023-06-26 | 202351-AMERICAN GARAGE-THM05 | ND |
| 2023-06-26 | 2023613-BOTANY WELL (01G,02G) | ND |
| 2023-06-26 | 2023613-OLD MATHEW ST TANK (0. | ND |
| 2023-06-26 | 2023621-IX ST2 VESSEL AT 25% | ND |
| 2023-07-31 | 35817759001 | 0.68 pCi/L |
| 2023-07-31 | 35817759002 | ND |
| 2023-07-31 | 2023424-MILLER ST. GP WELL | ND |
| 2023-07-31 | 2023614-TREATED: JACQUES WTF ( | ND |
| 2023-07-31 | 2023616-RAW: WHITCOMB WELLFIEL | 0.68 pCi/L |
| 2023-07-31 | 202367-WELL #19 | ND |
| 2023-08-29 | 35823999001 | ND |
| 2023-08-29 | 202353-TREATED: JACQUES WTF (L | ND |
| 2023-08-29 | 2023620-FINISHED: TOWNSEND RD | ND |
| 2023-09-19 | 35829245001 | ND |
| 2023-09-19 | 35829245002 | ND |
| 2023-09-19 | 35829245003 | ND |
| 2023-09-19 | 35829245004 | ND |
| 2023-09-19 | 2023419-RAW WATER: POPULATIC W | ND |
| 2023-09-19 | 202343-HUBBARD WELL #2 POINT O | ND |
| 2023-09-19 | 202345-ENTRY POINT (BLENDED SA | ND |
| 2023-09-19 | 202346-LANCASTER AVE WTP (BLEN | ND |
| 2023-09-19 | 202355-SPRAGUE ROAD STATION | ND |
| 2023-09-19 | 2023615-POINT OF ENTRY POST TR | ND |
| 2023-09-19 | 2023616-RAW: REPLACEMENT WELL | ND |
| 2023-09-19 | 2023621-POINT OF ENTRY | ND |
| 2023-10-11 | 35834513001 | ND |
| 2023-10-11 | 35834513002 | ND |
| 2023-10-11 | 35834513003 | ND |
| 2023-10-11 | 35834513004 | ND |
| 2023-10-11 | 35834513005 | 0.88 pCi/L |
| 2023-10-11 | 2023412-75 MIDDLE ST - TOWN HA | ND |
| 2023-10-11 | 2023428-GWTP - FINISHED (1G,2G | ND |
| 2023-10-11 | 202344-BALDWIN POND WTP - FINI | ND |
| 2023-10-11 | 202344-MARY DUNN & AIRPORT WEL | 0.88 pCi/L |
| 2023-10-11 | 202351-RAW WATER: GP WELL #8 | ND |
| 2023-10-11 | 202351-THE HIGHLANDS-335 NICHO | ND |
| 2023-10-11 | 2023510-133 N. COMMON ROAD - 2 | ND |
| 2023-10-11 | 2023510-RAW: WELL 2R | ND |
| 2023-10-11 | 2023613-BOTANY WELL (01G,02G) | ND |
| 2023-10-11 | 202368-WELLS #1 & #2 | ND |
| 2023-12-13 | 35848531001 | ND |
| 2023-12-13 | 35848531002 | ND |
| 2023-12-13 | 202344-MARY DUNN & AIRPORT WEL | ND |
| 2023-12-13 | 202353-FINISHED ENTRY POINT: R | ND |
| 2023-12-13 | 2023614-WELL 21 AND 22 | ND |
| 2023-12-13 | 2023628-MID-POINT: CHESTNUT WT | ND |