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LakeLocationDate collectedEnterococci (MPN cells/100 mL)E. coli (MPN cells/100 mL)Total Coliform (MPN cells/100 mL)
Time incubated
Time read next day
Counted byPrior RainfallComments
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STLBeach5/13/20213101096:35 PM6:45 PMBH
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NTLBeach5/13/202121024896:35 PM6:45 PMBH
4
STLBeach6/10/202129.22018506:00 PM6:00 PMBH
5
NTLBeach6/10/202112.1<1014676:00 PM6:00 PMBH
6
STLBeach6/24/2021156.5<1077016:00 PM6:00 PMBHA home adjacent to the beach had septic system replaced prior to this sample
7
NTLBeach6/24/202112.11024816:00 PM6:00 PMBH
8
STLBeach7/1/2021111034415:00 PM5:00 PMBH
9
NTLBeach7/1/20213.11034485:00 PM5:00 PMBH
10
STLBeach7/8/2114.2<10162411:15 AM11:15 AMMK
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NTLBeach7/8/21148.386435211:15 AM11:15 AMMK7/8/21heavy rainfall
12
STLBeach7/12/211106326:00 PM6:15 PMBH
13
STLCenter7/12/21<1<10746:00 PM6:15 PMBH
14
NTLBeach7/12/21<1<10506:00 PM6:15 PMBH
15
NTLCenter7/12/211<10416:00 PM6:15 PMBH
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STLBeach8/5/21112029094:45 PM4:45 PMBH
17
NTLBeach8/5/218.42051724:45 PM4:45 PMBH
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STLBeach9/11/216.3<1027554:00 PM4:00 PMBH
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NTLBeach9/11/2112.22043524:00 PM4:00 PMBH
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NTLStorm Drain9/15/21>2419.6>24196>241969:45 PM9:45 PMBH9/15/21Collected at start of rain event
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NTLShore by storm drain10/9/2118.6201152112:30 PM12:30 PMMP
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NTLStorm Drain10/16/21>24196>24196>241965:30 PM5:30 PMMP10/16/21Collected at start of rain event
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NTLShore by storm drain11/13/216.3<102653:00 PM3:15 PMBH11/12/21Rained yesterday
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NTLCenter11/13/213.1<104643:00 PM3:15 PMBH11/12/21Rained yesterday
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STLBeach5/31/221137566537:45 PM7:45 PMMP5/28/22
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STLCenter5/31/22<1<104557:45 PM7:45 PMMP5/28/22
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NTLBeach5/31/226.32017897:45 PM7:45 PMMP5/28/22
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NTLCenter5/31/223.1<103937:45 PM7:45 PMMP5/28/22
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NTLShore by storm drain5/31/221508514717:45 PM7:45 PMMP5/28/22
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STLBeach6/9/2221.61061311:45 PM2:05 PMEW6/9/22rainfall overnight and into the early morning, had stopped before sampling occurred
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STLCenter6/9/2218.9<11351:45 PM2:05 PMEW6/9/22
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NTLBeach6/9/22866.4148>241961:45 PM2:05 PMEW6/9/22
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NTLCenter6/9/22<1<14.11:45 PM2:05 PMEW6/9/22
34
NTLShore by storm drain6/9/2246.5209341:45 PM2:05 PMEW6/9/22
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FECAL BACTERIA TESTING METHOD CHANGED FROM IDEXX TO AQUAGENX AS OF 7/14/22
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STL Beach7/14/22nd<10>1000EW6/13thunderstorms 6/13 and 6/13
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STLCenter7/14/22nd<10<10EW6/13thunderstorms 6/13 and 6/11
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STLDeep7/14/22nd<10>1000EW6/13thunderstorms 6/13 and 6/12
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NTLBeach7/14/22nd26>1000EW6/13thunderstorms 6/13 and 6/16
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NTLCenter7/14/22nd<10>1000EW6/13thunderstorms 6/13 and 6/15
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NTLDeep7/14/22nd<10<10EW6/13thunderstorms 6/13 and 6/14
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NTLShore by storm drain7/14/22nd12>1000EW6/13thunderstorms 6/13 and 6/17
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STLBeach8/13/22nd<309408:18 PM4:18 PMEW
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STLCenter8/13/22nd<3010608:18 PM4:18 PMEW
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STLCenter Deep8/13/22nd<3017108:18 PM4:18 PMEW
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NTLBeach8/12/22nd505208:18 PM4:18 PMEW
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NTLCenter8/12/22nd<301108:18 PM4:18 PMEW
48
NTLCenter Deep8/12/22nd<302208:18 PM4:18 PMEW
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NTLShore by storm drain8/12/22nd<308708:18 PM4:18 PMEW
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FECAL BACTERIA TESTING METHOD CHANGED TO MODIFIED IDEXX (Colilert-18 and Enterolert in 96-well plate format) AS OF 9/17/22
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STLBeach9/17/2230<30>24240
4:28 PM / 5:34 PM
5:17 PM / 1:25 PM
EW
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STLCenter9/17/22<3030>24240
4:28 PM / 5:34 PM
5:17 PM / 1:25 PM
EW
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STLCenter Deep9/17/22<30<30>24240
4:28 PM / 5:34 PM
5:17 PM / 1:25 PM
EW
54
NTLBeach9/17/223030>24240
4:28 PM / 5:34 PM
5:17 PM / 1:25 PM
EW
55
NTLCenter9/17/22<30<302550
4:28 PM / 5:34 PM
5:17 PM / 1:25 PM
EW
56
NTLCenter Deep9/17/22<30<30690
4:28 PM / 5:34 PM
5:17 PM / 1:25 PM
EW
57
NTLShore by storm drain9/17/22308013700
4:28 PM / 5:34 PM
5:17 PM / 1:25 PM
EW
58
STLBeach10/15/22<30<301020
5:45 PM / 6:33 PM
6:48 PM / 12:46 PM
EW10/13heavy rain 10/12 night to 10/13 early morning
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STLCenter10/15/22<30<30<30
5:45 PM / 6:33 PM
6:48 PM / 12:46 PM
EW10/13heavy rain 10/12 night to 10/13 early morning
60
STLCenter Deep10/15/22<30<3030
5:45 PM / 6:33 PM
6:48 PM / 12:46 PM
EW10/13heavy rain 10/12 night to 10/13 early morning
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NTLBeach10/15/22<30<30460
5:45 PM / 6:33 PM
6:48 PM / 12:46 PM
EW10/13heavy rain 10/12 night to 10/13 early morning
62
NTLCenter10/15/22<30<30190
5:45 PM / 6:33 PM
6:48 PM / 12:46 PM
EW10/13heavy rain 10/12 night to 10/13 early morning
63
NTLCenter Deep10/15/223030330
5:45 PM / 6:33 PM
6:48 PM / 12:46 PM
EW10/13heavy rain 10/12 night to 10/13 early morning
64
NTLShore by storm drain10/15/22<30<30430
5:45 PM / 6:33 PM
6:48 PM / 12:46 PM
EW10/13heavy rain 10/12 night to 10/13 early morning
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Data reported as Most Probable Number (MPN) of bacterial cells/colony forming units per 100 mL water sample
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Numbers in red exceed state threshold for a single sample from a swimming beach (single sample threshold for E. coli is 235 MPN/100 mL and 61 MPN/100 mL for enterococci)
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https://regs.health.ny.gov/volume-title-10/1746432786/section-6-215-water-quality-monitoring
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Information on IDEXX tests used to generate this data:
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https://www.idexx.com/en/water/water-products-services/enterolert/
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https://www.idexx.com/en/water/water-products-services/colilert/
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https://www.idexx.com/en/water/water-products-services/colilert-18/
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Information on Aquagenx tests used to enumerate bacteria:
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https://www.aquagenx.com/cbt-ectc/
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nd = not determined
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