Bathing water data 2023

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Details of bathing water quality for 2023. This information will be updated for each location until mid-September 2023.

Results

Individual sample results below 250 EC and 100 IE are typical of an Excellent classification. Results above these values and up to 500 EC and 200 IE are typical of a Good or Sufficient classification.

These results are used for the annual bathing water classification which is a statistical assessment based on a four year data set.

Ballycastle

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
25/05/2023	10	10
02/06/2023	10	10
06/06/2023	10	10
12/06/2023	110	29
16/06/2023	10	10
21/06/2023	430	340
27/06/2023	22	50
03/07/2023	11	12
07/07/2023	10	10
17/07/2023	10	10
27/07/2023	110	70
01/08/2023	310	80
07/08/2023	34	10
10/08/2023	10	10
17/08/2023	36	10
23/08/2023	10	10
25/08/2023	100	60
31/08/2023	100	31
05/09/2023	10	10
13/09/2023	10	10

Ballygally

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
25/05/2023	10	10
02/06/2023	10	10
06/06/2023	10	10
12/06/2023	10	10
16/06/2023	10	10
21/06/2023	21	22
27/06/2023	10	10
03/07/2023	45	70
07/07/2023	11	10
17/07/2023	60	10
27/07/2023	35	20
01/08/2023	40	40
07/08/2023	11	13
10/08/2023	10	10
17/08/2023	49	80
23/08/2023	28	10
25/08/2023	300	18
31/08/2023	10	10
05/09/2023	12	10
13/09/2023	10	10

Ballyholme

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
23/05/2023	27	10
01/06/2023	90	40
05/06/2023	17	12
14/06/2023	10	10
20/06/2023	10	15
26/06/2023	56	45
05/07/2023	14	90
14/07/2023	10	10
20/07/2023	12	10
28/07/2023	150	18
31/07/2023	27	20
02/08/2023	3300	2800
08/08/2023	50	30
16/08/2023	25	10
18/08/2023	170	42
24/08/2023	51	11
01/09/2023	390	300
04/09/2023	17	10
07/09/2023	10	10
12/09/2023	280	110

Ballyhornan

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
25/05/2023	10	10
02/06/2023	120	45
06/06/2023	40	10
12/06/2023	10	10
16/06/2023	23	23
21/06/2023	10	10
27/06/2023	110	15
03/07/2023	470	580
07/07/2023	28	24
17/07/2023	10	10
27/07/2023	68	10
01/08/2023	130	220
07/08/2023	60	18
10/08/2023	65	31
17/08/2023	14	10
23/08/2023	10	10
25/08/2023	10	21
31/08/2023	400	60
05/09/2023	10	10
13/09/2023	110	200

Ballywalter

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
23/05/2023	10	10
01/06/2023	10	10
05/06/2023	10	10
14/06/2023	10	10
20/06/2023	120	49
26/06/2023	10	10
05/07/2023	10	31
14/07/2023	480	110
20/07/2023	11	58
28/07/2023	10	10
31/07/2023	67	15
02/08/2023	390	330
08/08/2023	10	21
16/08/2023	10	10
18/08/2023	90	38
24/08/2023	10	10
01/09/2023	170	220
04/09/2023	64	260
07/09/2023	10	10
12/09/2023	34	130

Brown's Bay

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
25/05/2023	10	10
02/06/2023	18	10
06/06/2023	10	10
12/06/2023	10	10
16/06/2023	10	10
21/06/2023	62	31
27/06/2023	10	10
03/07/2023	100	280
07/07/2023	100	41
17/07/2023	10	10
27/07/2023	480	23
01/08/2023	90	140
07/08/2023	25	15
10/08/2023	10	10
17/08/2023	10	10
23/08/2023	69	26
25/08/2023	10	10
31/08/2023	10	10
05/09/2023	31	10
13/09/2023	10	10

Carnlough

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
25/05/2023	10	10
02/06/2023	23	10
06/06/2023	10	10
12/06/2023	10	10
16/06/2023	12	10
21/06/2023	180	130
27/06/2023	10	10
03/07/2023	17	10
07/07/2023	29	17
17/07/2023	12	11
27/07/2023	17	10
01/08/2023	10	10
07/08/2023	10	10
10/08/2023	10	12
17/08/2023	38	25
23/08/2023	10	10
25/08/2023	10	10
31/08/2023	120	390
05/09/2023	10	10
13/09/2023	17	11

Castlerock

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
24/05/2023	10	10
01/06/2023	10	10
05/06/2023	10	10
14/06/2023	10	10
20/06/2023	10	10
26/06/2023	10	15
05/07/2023	10	10
14/07/2023	10	10
20/07/2023	12	10
28/07/2023	27	10
31/07/2023	120	30
02/08/2023	23	10
08/08/2023	10	10
16/08/2023	19	10
18/08/2023	10	10
24/08/2023	18	10
01/09/2023	13	24
04/09/2023	10	15
07/09/2023	10	10
12/09/2023	810	260

Cloughey

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
23/05/2023	10	10
01/06/2023	10	10
05/06/2023	10	10
14/06/2023	10	10
20/06/2023	160	75
26/06/2023	10	10
05/07/2023	10	15
14/07/2023	10	10
20/07/2023	10	10
28/07/2023	10	10
31/07/2023	71	70
02/08/2023	730	800
08/08/2023	10	10
16/08/2023	10	10
18/08/2023	11	10
24/08/2023	10	10
01/09/2023	58	90
04/09/2023	10	10
07/09/2023	10	10
12/09/2023	17	17

Cranfield (Cranfield Bay)

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
25/05/2023	10	10
02/06/2023	10	10
06/06/2023	20	41
12/06/2023	31	10
16/06/2023	10	10
21/06/2023	10	10
27/06/2023	10	10
03/07/2023	13	18
07/07/2023	540	1600
17/07/2023	10	10
27/07/2023	10	10
01/08/2023	47	90
07/08/2023	10	10
10/08/2023	10	10
17/08/2023	10	14
23/08/2023	10	10
25/08/2023	15	10
31/08/2023	220	110
05/09/2023	27	10
13/09/2023	10	10

Crawfordsburn

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
23/05/2023	10	10
01/06/2023	15	20
05/06/2023	490	24
14/06/2023	11	14
20/06/2023	70	39
26/06/2023	10	10
05/07/2023	10	10
14/07/2023	11	17
20/07/2023	10	10
28/07/2023	10	10
31/07/2023	19	10
02/08/2023	10000	10000
08/08/2023	10	10
16/08/2023	80	37
18/08/2023	70	70
24/08/2023	12	10
01/09/2023	800	800
04/09/2023	14	13
07/09/2023	26	10
12/09/2023	12	11

Groomsport

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
23/05/2023	10	10
01/06/2023	640	40
05/06/2023	110	10
14/06/2023	10	10
20/06/2023	10	10
26/06/2023	10	12
05/07/2023	13	10
14/07/2023	10	10
20/07/2023	13	10
28/07/2023	10	10
31/07/2023	28	19
02/08/2023	130	270
08/08/2023	10	10
16/08/2023	33	10
18/08/2023	37	20
24/08/2023	10	10
01/09/2023	24	40
04/09/2023	16	15
07/09/2023	660	100
12/09/2023	21	13

Helen's Bay

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
23/05/2023	12	10
01/06/2023	78	10
05/06/2023	26	10
14/06/2023	48	10
20/06/2023	48	12
26/06/2023	10	10
05/07/2023	59	14
14/07/2023	10	10
20/07/2023	10	10
28/07/2023	10	10
31/07/2023	10	10
02/08/2023	340	1500
08/08/2023	10	10
16/08/2023	12	10
18/08/2023	80	160
24/08/2023	10	10
01/09/2023	150	60
04/09/2023	10	10
07/09/2023	10	10
12/09/2023	17	23

Kilclief

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
25/05/2023	10	10
02/06/2023	10	10
06/06/2023	10	10
12/06/2023	10	10
16/06/2023	10	10
21/06/2023	10	10
27/06/2023	10	10
03/07/2023	120	120
07/07/2023	180	190
17/07/2023	10	10
27/07/2023	10	10
01/08/2023	10	10
07/08/2023	10	10
10/08/2023	21	10
17/08/2023	10	10
23/08/2023	10	10
25/08/2023	10	10
31/08/2023	220	90
05/09/2023	10	10
13/09/2023	10	10

Magilligan Benone

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
24/05/2023	10	10
01/06/2023	10	10
05/06/2023	19	12
14/06/2023	10	14
20/06/2023	10	10
26/06/2023	10	10
05/07/2023	19	10
14/07/2023	10	10
20/07/2023	10	10
28/07/2023	25	10
31/07/2023	19	10
02/08/2023	33	17
08/08/2023	11	10
16/08/2023	10	10
18/08/2023	12	13
24/08/2023	10	10
01/09/2023	26	42
04/09/2023	12	15
07/09/2023	10	10
14/09/2023	21	10

Magilligan Downhill

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
24/05/2023	10	10
01/06/2023	12	10
05/06/2023	20	10
14/06/2023	10	10
20/06/2023	10	10
26/06/2023	10	10
05/07/2023	17	18
14/07/2023	10	10
20/07/2023	17	10
28/07/2023	18	10
31/07/2023	100	70
02/08/2023	22	11
08/08/2023	16	10
16/08/2023	10	10
18/08/2023	10	10
24/08/2023	10	10
01/09/2023	24	23
04/09/2023	10	10
07/09/2023	17	10
12/09/2023	770	180

Millisle

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
23/05/2023	10	10
01/06/2023	340	10
05/06/2023	10	10
14/06/2023	10	10
20/06/2023	12	10
26/06/2023	10	10
05/07/2023	11	24
14/07/2023	10	10
20/07/2023	10	10
28/07/2023	10	10
31/07/2023	71	80
02/08/2023	110	180
08/08/2023	10	10
16/08/2023	10	10
18/08/2023	390	70
24/08/2023	10	10
01/09/2023	44	280
04/09/2023	20	100
07/09/2023	10	10
12/09/2023	130	110

Murlough (Co Down)

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
25/05/2023	10	10
02/06/2023	70	18
06/06/2023	10	10
12/06/2023	10	10
16/06/2023	10	10
21/06/2023	10	10
27/06/2023	22	17
03/07/2023	10	17
07/07/2023	600	320
17/07/2023	10	10
27/07/2023	10	10
01/08/2023	100	39
07/08/2023	10	10
10/08/2023	15	10
17/08/2023	10	10
23/08/2023	10	10
25/08/2023	10	10
31/08/2023	100	30
05/09/2023	20	10
13/09/2023	48	10

Newcastle

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
25/05/2023	10	10
02/06/2023	430	800
06/06/2023	10	10
12/06/2023	60	47
16/06/2023	1700	29
21/06/2023	10	10
27/06/2023	100	42
03/07/2023	30	37
07/07/2023	3300	2200
17/07/2023	10	18
27/07/2023	70	10
01/08/2023	16	16
07/08/2023	10	10
10/08/2023	70	12
17/08/2023	10	10
23/08/2023	130	130
25/08/2023	10	10
31/08/2023	250	70
05/09/2023	80	10
13/09/2023	70	27

Portballintrae Salmon Rock

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
24/05/2023	10	210
01/06/2023	10	10
05/06/2023	10	10
14/06/2023	10	10
20/06/2023	10	10
26/06/2023	10	10
05/07/2023	10	44
14/07/2023	10	10
20/07/2023	10	10
28/07/2023	10	20
31/07/2023	10	17
02/08/2023	120	120
08/08/2023	10	19
16/08/2023	10	10
18/08/2023	10	10
24/08/2023	10	10
01/09/2023	10	10
04/09/2023	32	26
07/09/2023	10	10
12/09/2023	26	10

Portrush Curran (East Strand)

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
24/05/2023	10	10
01/06/2023	10	10
05/06/2023	10	10
14/06/2023	10	10
20/06/2023	11	19
26/06/2023	10	10
05/07/2023	10	13
14/07/2023	10	10
20/07/2023	10	10
28/07/2023	15	10
31/07/2023	27	17
02/08/2023	12	10
08/08/2023	10	10
16/08/2023	90	12
18/08/2023	11	10
24/08/2023	24	10
01/09/2023	10	26
04/09/2023	27	34
07/09/2023	10	15
12/09/2023	16	10

Portrush Mill (West Strand)

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
24/05/2023	10	10
01/06/2023	10	10
05/06/2023	10	10
14/06/2023	10	10
20/06/2023	10	10
26/06/2023	35	10
05/07/2023	10	10
14/07/2023	10	10
20/07/2023	10	10
28/07/2023	60	11
31/07/2023	180	140
02/08/2023	10	10
08/08/2023	10	10
16/08/2023	22	23
18/08/2023	10	10
24/08/2023	10	10
01/09/2023	10	10
04/09/2023	10	10
07/09/2023	10	10
12/09/2023	10	10

Portrush Whiterocks

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
24/05/2023	10	10
01/06/2023	10	10
05/06/2023	10	10
14/06/2023	10	10
20/06/2023	10	10
26/06/2023	10	13
05/07/2023	10	11
14/07/2023	10	10
20/07/2023	10	10
28/07/2023	12	10
31/07/2023	10	10
02/08/2023	14	10
08/08/2023	10	11
16/08/2023	10	10
18/08/2023	16	10
24/08/2023	10	10
01/09/2023	10	10
04/09/2023	10	10
07/09/2023	10	10
12/09/2023	10	10

Portstewart

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
24/05/2023	10	10
01/06/2023	10	10
05/06/2023	10	10
14/06/2023	10	10
20/06/2023	10	10
26/06/2023	10	10
05/07/2023	10	10
14/07/2023	10	10
20/07/2023	15	10
28/07/2023	29	22
31/07/2023	10	20
02/08/2023	10	10
08/08/2023	10	10
16/08/2023	10	10
18/08/2023	10	10
24/08/2023	10	10
01/09/2023	10	10
04/09/2023	10	10
07/09/2023	10	10
14/09/2023	10	10

Tyrella

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
25/05/2023	10	10
02/06/2023	36	44
06/06/2023	21	15
12/06/2023	10	10
16/06/2023	90	34
21/06/2023	100	10
27/06/2023	20	10
03/07/2023	10	10
07/07/2023	35	39
17/07/2023	10	10
27/07/2023	10	10
01/08/2023	160	80
07/08/2023	10	10
10/08/2023	47	10
17/08/2023	270	41
23/08/2023	13	10
25/08/2023	10	10
31/08/2023	150	150
05/09/2023	10	10
13/09/2023	60	26

Waterfoot

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
25/05/2023	17	80
02/06/2023	140	10
06/06/2023	10	16
12/06/2023	16	14
16/06/2023	10	10
21/06/2023	25	14
27/06/2023	15	57
03/07/2023	10	10
07/07/2023	880	1200
17/07/2023	24	19
27/07/2023	110	50
01/08/2023	10	10
07/08/2023	10	10
10/08/2023	12	11
17/08/2023	49	34
23/08/2023	10	10
25/08/2023	48	60
31/08/2023	440	34
05/09/2023	19	15
13/09/2023	10	20

Brompton (Candidate)

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
23/05/2023	10	10
01/06/2023	10	10
05/06/2023	10	10
14/06/2023	300	2200
20/06/2023	39	160
26/06/2023	12	10
05/07/2023	10	11
14/07/2023	10	10
20/07/2023	10	10
28/07/2023	81	16
31/07/2023	10	10
02/08/2023	10000	10000
08/08/2023	12	10
16/08/2023	10	10
18/08/2023	11	10
24/08/2023	10	10
01/09/2023	70	150
04/09/2023	10	10
07/09/2023	10	20
12/09/2023	10	90

Cushendall (Candidate)

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
25/05/2023	10	10
02/06/2023	10	10
06/06/2023	150	60
12/06/2023	10	10
16/06/2023	10	10
21/06/2023	10	10
27/06/2023	16	10
03/07/2023	10	10
07/07/2023	900	500
17/07/2023	10	10
27/07/2023	60	12
01/08/2023	11	10
07/08/2023	10	10
10/08/2023	120	38
17/08/2023	10	10
23/08/2023	13	10
25/08/2023	12	10
31/08/2023	100	50
05/09/2023	10	13
13/09/2023	15	10

Donaghadee (Candidate)

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
23/05/2023	10	10
01/06/2023	440	130
05/06/2023	12	12
14/06/2023	440	56
20/06/2023	10	70
26/06/2023	11	10
05/07/2023	38	13
14/07/2023	47	31
20/07/2023	43	23
28/07/2023	10	10
31/07/2023	19	60
02/08/2023	4300	5800
08/08/2023	31	10
16/08/2023	44	25
18/08/2023	300	80
24/08/2023	13	11
01/09/2023	130	130
04/09/2023	10	10
07/09/2023	10	10
12/09/2023	37	70

Drain's Bay (Candidate)

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
25/05/2023	10	10
02/06/2023	150	90
06/06/2023	10	10
12/06/2023	10	10
16/06/2023	10	10
21/06/2023	10	10
27/06/2023	10	10
03/07/2023	10	14
07/07/2023	24	180
17/07/2023	10	10
27/07/2023	10	10
01/08/2023	25	17
07/08/2023	10	10
10/08/2023	10	10
17/08/2023	10	10
23/08/2023	1000	630
25/08/2023	10	10
31/08/2023	280	33
05/09/2023	10	10
13/09/2023	10	10

Portmuck (Candidate)

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
25/05/2023	110	11
02/06/2023	10	10
06/06/2023	10	10
12/06/2023	10	10
16/06/2023	10	10
21/06/2023	74	46
27/06/2023	10	10
03/07/2023	310	140
07/07/2023	14	10
17/07/2023	12	10
27/07/2023	110	250
01/08/2023	100	36
07/08/2023	60	15
10/08/2023	10	10
17/08/2023	10	10
23/08/2023	20	10
25/08/2023	10	10
31/08/2023	15	13
05/09/2023	54	220
13/09/2023	10	10

Warrenpoint (Candidate)

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
25/05/2023	10	10
02/06/2023	18	10
06/06/2023	10	100
12/06/2023	10	10
16/06/2023	56	10
21/06/2023	10	10
27/06/2023	17	45
03/07/2023	10	12
07/07/2023	590	1100
17/07/2023	16	13
27/07/2023	15	10
01/08/2023	21	70
07/08/2023	410	250
10/08/2023	700	2700
17/08/2023	22	10
23/08/2023	48	10
25/08/2023	19	10
31/08/2023	100	320
05/09/2023	10	10
13/09/2023	10	10

Rea's Wood* (Candidate)

Date	Escherichia Coli (cfu/100ml)	Intestinal Enterococci (cfu/100ml)
24/05/2023	190	35
01/06/2023	41	10
05/06/2023	800	10
14/06/2023	10	10
20/06/2023	140	10
26/06/2023	10000	10000
05/07/2023	500	120
14/07/2023	14	10
20/07/2023	220	49
28/07/2023	230	100
31/07/2023	100	27
02/08/2023	83	24
08/08/2023	80	30
16/08/2023	66	16
18/08/2023	10	10
24/08/2023	360	100
01/09/2023	220	44
04/09/2023	160	27
07/09/2023	57	10
12/09/2023	39	11

*Inland Bathing Waters - Individual sample results below 500 EC and 200 IE are typical of an Excellent classification. Results above these values and up to 1000 EC and 400 IE are typical of a Good or Sufficient classification.