FOSC Coliform Data

Testing is done by the FOSC Water Quality Monitoring Field Team

See the: Map of Monitoring Sites

Measurements in colonies/100 mL
SUS = Suspended
PRE = Prior to the start of testing at this location
ND = No Data
TNTC= Too numerous to count

Testing is done at up to 12 sites monthly. Flora, Bennington, Wayne and Brashears Run are tributaries and/or stormwater outfalls; eight are main channel locations, including Blueridge Ave in Wheaton at the headwaters of Sligo Creek, and Jackson Ave, Central Ave, and 13th Ave (beginning in January 2022), all in Takoma Park.

Note: Use the scroll bar at the bottom of the table to bring the right-most columns into view.

Further note: Click on a field(s) in the Column Visibility button to suppress display of that field(s);
click the field(s) in the Column Visibility button again to redisplay in the table.

DateBlueridge
Wheaton LaneDennis AveFlora LaneDallas AveBennington
Dr (SA10)
Wayne AveWayne Ave (New Site)Fleetwood TerraceBrashears RunJackson AveCentral Ave (Long Branch)13th AveMaple Ave (KE01A)Maple Ave (KE01B)
E.ColiTotal ColiformE.ColiTotal ColiformE.ColiTotal ColiformE.ColiTotal ColiformE.ColiTotal ColiformE.ColiTotal ColiformE.ColiTotal ColiformE.ColiTotal ColiformE.ColiTotal ColiformE.ColiTotal ColiformE.ColiTotal ColiformE.ColiTotal ColiformE.ColiTotal ColiformE.ColiTotal ColiformE.ColiTotal Coliform
2024-0680046004003700100410010029000290013002200500490011004400400310020027006003900
2024-041001500100400010020011002007005003100121001400121000430010040007002400100500
2024-03490058000500010030012000800100390030052003001900010001200460020018000800100700SUSSUSSUSSUS
2024-02160019001002001003000600001600TNTC6400TNTC3001900015000470001000100200500SUSSUSSUSSUS
2023-12800320010012003001300100100010020000026006200PREPRE1004500400112003002800010005003300SUSSUSSUSSUS
2023-1120045000200014000170009007005800TNTCTNTCPREPRE14001160050069006006500041008008400SUSSUSSUSSUS
2023-104300104005002000090010011001001000170050007002000PREPRE20080045004700100700000100SUSSUSSUSSUS
2023-083700720030019009003200100180010018008002600TNTCTNTCPREPRE4002600200TNTC01400012002002100SUSSUSSUSSUS
2023-07150053007003900300320011005300100180013006500TNTCTNTCPREPRE20029006008600100290010024003001100SUSSUSSUSSUS
2023-06NDNDNDNDNDND8002700NDNDTNTCTNTCTNTCTNTCPREPRE220090070010100400280007002002400SUSSUSSUSSUS
2023-0420073001005001200TNTC200110011001500001006400SUSSUSPREPRE50014001700550020011002009000900SUSSUSSUSSUS
2023-03100330010050000NANA01001006400SUSSUSPREPRE15001700100700010000100600SUSSUSSUSSUS
2023-0203000100010000010020082002200TNTCPREPRE04000410020030000100100SUSSUSSUSSUS
2022-1260029000200020001000010001000860014200PREPRE1000710003600400110004000300SUSSUSSUSSUS
2022-115003500100800200900200700010000500TNTCTNTCPREPRETNTCTNTC4004400400350003006002600SUSSUSSUSSUS
2022-10NDNDNDNDNDNDNDND06001800102001080014200PREPRE200340070073001009001006000500SUSSUSSUSSUS
2022-09100510050026003002700300340030051000300TNTCTNTCPREPRE1600018000NDNDNDNDNANDNDNDSUSSUSSUSSUS
2022-0810004900200180015007100200240003600880011100TNTCTNTCPREPRE700510020059000320010029002003400SUSSUSSUSSUS
2022-061600500060037007003900400410020021004000115001400TNTCPREPRE90035000300100260030012002001800SUSSUSSUSSUS
2022-041002700NDND10090006006001500TNTCTNTC150012200PREPRE2300TNTC1001100700TNTC20050001500SUSSUSSUSSUS
2022-02100530003001002001001000300010008001700PREPRE4009001003000200014000400SUSSUSSUSSUS
2022-01300290010018000150020025000430020090038006400PREPRE4009005100800070035000130001200SUSSUSSUSSUS
2021-124200TNTC40030001001200050003001003500200TNTCPREPRE150034004005600NDND0600SUSSUSSUSSUS
2021-0926005800NDND200330050035002002100170048006007400PREPRE1002700400570020013002001100SUSSUSSUSSUS
2021-08PREPRE30063003004400120052004003300NDNDNDNDPREPRE200270013005400PREPRE01000SUSSUSSUSSUS
2021-07PREPRE200200040015001800240050013000TNTC1005500PREPRE30025009005400PREPREPREPRESUSSUSSUSSUS
2021-06PREPRE23007500300640010064001001800TNTCTNTC1400024000PREPRE8006700PREPREPREPREPREPRESUSSUSSUSSUS
2021-04PREPRE100580019009100100320001800 0 11300500 20200PREPRE03500PREPREPREPREPREPRESUSSUSSUS SUS
2021-02PREPRE04600200560008000130060050003800044000PREPRE9003000PREPREPREPREPREPRESUSSUSSUSSUS
2020-11PREPRE01800017000280030018000400100000100000PREPRE10002000SUSSUSSUSSUS
2020-09PREPRE800170020010006002000070040090039005500PREPRE8001700SUSSUSSUSSUS
2020-08PREPRENDNDNDNDNDNDNDND080036004900PREPRE9002600SUSSUSSUSSUS
2020-07PREPRE031001200230090041005001900NDNDNDNDPREPRENDNDSUSSUSSUSSUS
2020-06PREPRENDND600470040049008004000024002400031000PREPRE11005100SUSSUSSUSSUS
2020-02PREPRE030004000100030010030026002800PREPRE00SUSSUSSUSSUS
2020-01PREPRE005001000040004002700520048007300PREPRE100300SUSSUSSUSSUS
2019-12PREPRENDNDNDNDNDND02000200340034000PREPRE10001400SUSSUSSUSSUS
2019-11PREPRENDNDNDNDNDNDNDNDNDNDNDPREPRE3001300SUSSUSSUSSUS
2019-10PREPRE200100020024000210004004008800100000100000PREPRE3001300NDNDNDND
2019-09PREPRE2006003001400200700500210004000100000100000PREPRE340003500040013000220012700
2019-05PREPRE500700400150030090001500200940043007400PREPRE5001900200700100300
2019-02PREPRENDNDNDNDNDNDNDNDNDND63008400PREPRE10001500300400200200
2018-11PREPRE100500200700100300300900028000240024600PREPRE124001350040019000200
2018-10PREPRE1005001003003009002400024000NDNDPREPRE12,000?12000ND1900NDND
2018-08PREPRE300180017004200500200020023003000190001800020600PREPRE1900550040045003002100
2018-07PREPRE2009003x Wheaton120020016004001100NDNDNDNDPREPRENDNDNDNDNDND
2018-06PREPRE300900100120090020004001100NDNDNDNDPREPRENDNDNDNDNDND
2018-05PREPREPREPREPREPREPREPREPREPRENDNDNDNDPREPRENDND800220022002900
2018-04PREPREPREPREPREPREPREPREPREPRE12007000100000100000PREPRE8003100NDNDNDND
2018-02PREPREPREPREPREPREPREPREPREPRE180086002600026900PREPRE1300180072001060010002200
2017-12PREPREPREPREPREPREPREPREPREPRE270062002200023700PREPRE110011001100220000
2017-11PREPREPREPREPREPREPREPREPREPRE9001100100000100000PREPRE600150014000260001000600
2017-09PREPREPREPREPREPREPREPREPREPRE30070001380015900PREPRE1900230014001900100400
2017-06PREPREPREPREPREPREPREPREPREPRE3600119001800028000PREPRE270069002700710018006700
2017-04PREPREPREPREPREPREPREPREPREPRE003200038000PREPRE29004600500710015006700
2017-02PREPREPREPREPREPREPREPREPREPRE630068003000030000PREPRE420047002700380042005600
2017-01PREPREPREPREPREPREPREPREPREPRE11002000100000100000PREPRE600150016005200200600
2016-12PREPREPREPREPREPREPREPREPREPRENDND100000100000PREPREND73000000
2016-11PREPREPREPREPREPREPREPREPREPRE500900100000100000PREPRE5900730039004800200300
2016-10PREPREPREPREPREPREPREPREPREPRE6007200510016800PREPRE30018001600300013001700
2016-09PREPREPREPREPREPREPREPREPREPRE7003800100000100000PREPRE4001200650013200100400
2016-08PREPREPREPREPREPREPREPREPREPRE4008400620011600PREPREPREND1900790002800
2016-07PREPREPREPREPREPREPREPREPREPRE4005700920013400PREPREPREND8001400100900
2016-06PREPREPREPREPREPREPREPREPREPRE290015000100000100000PREPREPRE2900800250006002800
2016-05PREPREPREPREPREPREPREPREPREPRE170044009009900PREPREPRE1700400043005003000
2016-03PREPREPREPREPREPREPREPREPREPRE40009600100000100000PREPREPRE40075008300910010300
2016-02PREPREPREPREPREPREPREPREPREPRE50036002400026000PREPREPRE500111001190054006200
2015-12PREPREPREPREPREPREPREPREPREPRE40013001310015600PREPREPRE4002100480034003800
2015-11PREPREPREPREPREPREPREPREPREPRE160002000028000100000PREPREPRE160001200024000NDND
2015-10PREPREPREPREPREPREPREPREPREPRE1000600026000100000PREPREPRE100030066001003900
2015-09PREPREPREPREPREPREPREPREPREPRE2006000NDNDPREPREPREPRE950220001005000
2015-09PREPREPREPREPREPREPREPREPREPRE2006000NDNDPREPREPREPRE950220001005000