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 11 sites monthly. Flora, Bennington, and Wayne are tributaries and/or stormwater outfalls; the other four are main channel locations. In Summer 2021, the team added 4 new sites: Blueridge Ave in Wheaton at the headwaters of Sligo Creek, and Brashears Run, Jackson Ave, and Central Ave, 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 Lane Dennis Ave Flora Lane Dallas Ave Bennington
Dr (SA10)
 Wayne Ave Fleetwood Terrace Brashears Run Jackson Ave Central Ave (Long Branch) Maple 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 Coliform
2021-0926005800NDND2003300500350020021001700480060074001002700400570020013002001100SUSSUSSUSSUS
2021-08PREPRE30063003004400120052004003300NDNDNDND200270013005400PREPRE01000SUSSUSSUSSUS
2021-07PREPRE200200040015001800240050013000TNTC100550030025009005400PREPREPREPRESUSSUSSUSSUS
2021-06PREPRE23007500300640010064001001800TNTCTNTC14000240008006700PREPREPREPREPREPRESUSSUSSUSSUS
2021-04100580019009100100320001800 0 11300 500 2020003500PREPREPREPREPREPRESUSSUSSUS SUS
2021-02046002005600080001300600500038000440009003000PREPREPREPREPREPRESUSSUSSUSSUS
2020-110180001700028003001800040010000010000010002000SUSSUSSUSSUS
2020-098001700200100060020000700400900390055008001700SUSSUSSUSSUS
2020-08NDNDNDNDNDNDNDND0800360049009002600SUSSUSSUSSUS
2020-07031001200230090041005001900NDNDNDNDNDNDSUSSUSSUSUS
2020-06NDND60047004004900800400002400240003100011005100SUSSUSSUSSUS
2020-0203000400010003001003002600280000SUSSUSSUSSUS
2020-01005001000040004002700520048007300100300SUSSUSSUSSUS
2019-12NDNDNDNDNDND0200020034003400010001400SUSSUSSUSSUS
2019-11NDNDNDNDNDNDNDNDNDNDND3001300SUSSUSSUSSUS
2019-102001000200240002100040040088001000001000003001300NDNDNDND
2019-092006003001400200700500210004000100000100000340003500040013000220012700
2019-055007004001500300900015002009400430074005001900200700100300
2019-02NDNDNDNDNDNDNDNDNDND6300840010001500300400200200
2018-11100500200700100300300900028000240024600124001350040019000200
2018-101005001003003009002400024000NDND12,000?12000ND1900NDND
2018-083001800170042005002000200230030001900018000206001900550040045003002100
2018-072009003x Wheaton120020016004001100NDNDNDNDNDNDNDNDNDND
2018-06300900100120090020004001100NDNDNDNDNDNDNDNDNDND
2018-05PREPREPREPREPREPREPREPRENDNDNDNDNDND800220022002900
2018-04PREPREPREPREPREPREPREPRE120070001000001000008003100NDNDNDND
2018-02PREPREPREPREPREPREPREPRE1800860026000269001300180072001060010002200
2017-12PREPREPREPREPREPREPREPRE270062002200023700110011001100220000
2017-11PREPREPREPREPREPREPREPRE9001100100000100000600150014000260001000600
2017-09PREPREPREPREPREPREPREPRE300700013800159001900230014001900100400
2017-06PREPREPREPREPREPREPREPRE3600119001800028000270069002700710018006700
2017-04PREPREPREPREPREPREPREPRE00320003800029004600500710015006700
2017-02PREPREPREPREPREPREPREPRE630068003000030000420047002700380042005600
2017-01PREPREPREPREPREPREPREPRE11002000100000100000600150016005200200600
2016-12PREPREPREPREPREPREPREPRENDND100000100000ND73000000
2016-11PREPREPREPREPREPREPREPRE5009001000001000005900730039004800200300
2016-10PREPREPREPREPREPREPREPRE600720051001680030018001600300013001700
2016-09PREPREPREPREPREPREPREPRE70038001000001000004001200650013200100400
2016-08PREPREPREPREPREPREPREPRE4008400620011600PREND1900790002800
2016-07PREPREPREPREPREPREPREPRE4005700920013400PREND8001400100900
2016-06PREPREPREPREPREPREPREPRE290015000100000100000PRE2900800250006002800
2016-05PREPREPREPREPREPREPREPRE170044009009900PRE1700400043005003000
2016-03PREPREPREPREPREPREPREPRE40009600100000100000PRE40075008300910010300
2016-02PREPREPREPREPREPREPREPRE50036002400026000PRE500111001190054006200
2015-12PREPREPREPREPREPREPREPRE40013001310015600PRE4002100480034003800
2015-11PREPREPREPREPREPREPREPRE160002000028000100000PRE160001200024000NDND
2015-10PREPREPREPREPREPREPREPRE1000600026000100000PRE100030066001003900
2015-09PREPREPREPREPREPREPREPRE2006000NDNDPREPRE950220001005000