Waterworks Raw, In-Process & Final Water Quality
Monthly Report: MAY 2013
Introduction
This report summarises the results of monitoring at the Ballyboden, Ballymore Eustace, and
Roundwood waterworks carried out during MAY 2013.
The percentage compliance figures of the final water for each of the waterworks in this report
are based on the parametric values listed in the European Communities (Drinking Water)
(No.2) Regulations, 2007 (S.I. 278 of 2007). In the case of fluoride notice is also drawn,
whenever applicable, to any result below 0.6mg/l which is the minimum concentration
specified for fluoridated water supplies in the Fluoridation of Water Supplies Regulations
2007 (S.I. No. 42 of 2007).
Results Summary
1. Vartry Works Roundwood.
Compliance of the final water with the European Communities (Drinking Water)
(No.2) Regulations, 2007 (S.I. 278 of 2007) is set out below. Results are
summarised in Appendix 1.
(i)
Final Water – Plant Output:
Parameter
Colour
(°Hazen)
Turbidity
(N.T.U.)
Conductivity
(μS/cm @
200C)
pH
Fluoride
(mg/l)
Total Coliforms
/100ml
E. Coli
(MPN/100ml)
Parametric
Values(s)
No. of
Samples
No. Inside
Limit
%
Compliance
Acceptable to
consumers & no
abnormal change
1.0
19
19
100
24
24
100
2500
19
19
100
6.5 - 9.5
19
19
100
0.8
19
19
100
0
24
24
100
0
24
24
100
(ii)
Final Water – Callow Hill:
Parameter
Colour
(°Hazen)
Turbidity
(N.T.U.)
Conductivity
(μS/cm @
200C)
pH
Fluoride
(mg/l)
Total Coliforms
/100ml
E. Coli
(MPN/100ml)
Parametric
Values(s)
No. of
Samples
No. Inside
Limit
%
Compliance
Acceptable to
consumers & no
abnormal change
1.0
31
31
100
31
30
96.8
2500
31
31
100
6.5 - 9.5
31
31
100
0.8
31
31
100
0
31
31
100
0
31
31
100
A sample did not comply with the parametric value for Turbidity; the details are as
follows;
Date:
21/05/13
Turbidity:
1.26 N.T.U.
The turbidity results for 20/05/13 and 22/05/13 were 0.19 N.T.U. and 0.26 N.T.U.
respectively, and are 100% compliant.
2. Dodder Works Ballyboden
Compliance of the final water with the European Communities (Drinking Water)
(No.2) Regulations, 2007 (S.I. 278 of 2007) is set out below. Results are
summarised in Appendix 2.
(i)
Final Water – Plant Output:
Parameter
Parametric
Value(s)
No. of
Samples
No. Inside Limit
%
Compliance
Colour (°Hazen)
Acceptable to
consumers & no
abnormal change
1.0
22
22
100
22
22
100
2500
22
22
100
6.5 - 9.5
0.2
0.8
22
22
22
22
22
22
100
100
100
0
22
21
95.4
0
22
21
95.4
Turbidity
(N.T.U.)
Conductivity
(μS/cm @ 200C)
pH
Aluminium
(mg/l)
Fluoride
(mg/l)
Total Coliforms
(MPN/100ml)
E. Coli
(MPN/100ml)
A sample did not comply with the parametric value for Total Coliform and E.Coli; the
details are as follows;
Date:
16/05/13
Total Coliform:
119 MPN/100ml
E.Coli:
11 MPN/100ml
The chlorine residuals for this sample were satisfactory, all subsequent retests were
satisfactory, and all microbiological results in distribution for May were compliant.
(ii)
Final Water – Pond Outlet:
Parameter
Parametric
Values(s)
No. of
Samples
Colour (°Hazen)
Acceptable to
consumers & no
abnormal change
1.0
22
22
100
22
22
100
2500
22
22
100
6.5 - 9.5
0.2
22
22
22
22
100
100
0.8
22
22
100
0
22
22
100
0
22
22
100
Turbidity
(N.T.U.)
Conductivity
(μS/cm @ 200C)
pH
Aluminium
(mg/l)
Fluoride
(mg/l)
Total Coliforms
(MPN/100ml)
E. Coli
(MPN/100ml)
No. Inside Limit %
Compliance
3. Liffey Works Ballymore Eustace.
Compliance of the final water with the European Communities (Drinking Water)
(No.2) Regulations, 2007 (S.I. 278 of 2007) is set out below. Results are
summarised in Appendix 3.
(i)
Final Water [Contact Tank No.1]:
Parameter
Parametric
Values(s)
No. of
Samples
No. Inside Limit
%
Compliance
Colour (°Hazen)
Acceptable to
consumers & no
abnormal change
1.0
29
29
100
29
29
100
2500
29
29
100
6.5 - 9.5
29
29
100
Aluminium
(mg/l)
0.2
29
29
100
Fluoride
(mg/l)
Total Coliforms
(MPN/100ml)
0.8
29
29
100
0
29
29
100
0
29
29
100
Turbidity
(N.T.U.)
Conductivity
(μS/cm @ 200C)
pH
E. Coli
(MPN/100ml)
(ii)
Final Water [Contact Tank No.2]:
Parameter
Parametric
Values(s)
No. of
Samples
No. Inside Limit
%
Compliance
Colour (°Hazen)
Acceptable to
consumers & no
abnormal change
1.0
31
31
100
31
31
100
2500
31
31
100
6.5 - 9.5
31
31
100
0.2
31
31
100
0.8
31
31
100
0
31
31
100
0
31
31
100
0
31
31
100
Turbidity
(N.T.U.)
Conductivity
(μS/cm @ 200C)
pH
Aluminium
(mg/l)
Fluoride
(mg/l)
Total Coliforms
/100ml
E. Coli
(MPN/100ml)
Faecal
Coliforms
/100ml
(ii)
Final Water [Reservoir]:
Parameter
Parametric
Values(s)
No. of
Samples
No. Inside Limit
%
Compliance
Colour (°Hazen)
Acceptable to
consumers & no
abnormal change
1.0
31
31
100
31
31
100
2500
31
31
100
6.5 - 9.5
31
31
100
0.2
31
31
100
0.8
31
31
100
0
31
31
100
0
31
31
100
0
31
31
100
Turbidity
(N.T.U.)
Conductivity
(μS/cm @ 200C)
pH
Aluminium
(mg/l)
Fluoride
(mg/l)
Total Coliforms
/100ml
E. Coli
(MPN/100ml)
Faecal
Coliforms
/100ml
4. Aluminium Residuals - Treated Waters.
A more detailed breakdown of aluminium residuals in final water (ex. waterworks) is
(excluding Vartry Works Roundwood – as Aluminium is not used in the water
treatment process) is presented in Appendix 4.
5. Cryptosporidium/Giardia Analysis.
Results for cryptosporidium/giardia analysis of the raw (pre-treatment) and final water
(ex. waterworks and open storage reservoir) is presented in Appendix 5.
6. Biological Testing.
A summary of Diatom counts for the Roundwood raw (pre-treatment) water is
presented in Appendix 6.
Appendix 1: Vartry Works Roundwood
Results Summary
MAY 2013
Raw
Filtered
Plant Final
Callow Hill
31
22
24
31
Alkalinity (mg/l
CaCO3)
14 – 20
-
23 – 35
22 – 32
Aluminium
(mg/l)
Colour (°Hazen)
-
-
-
-
16 – 30
13 – 16
7 – 14
5 – 10
88 – 94
-
115 – 124
112 – 125
1 – 74
<1 – 7
-
-
<1
(all samples)
0.65 – 0.75
<1
(all samples)
0.64 – 0.74
-
-
0.66 – 1.18
0.44 – 0.70
7.0 – 7.9
6.8 – 7.4
8.3 – 9.2
7.45 – 8.40
Total
Coliforms/100ml
2 – 1529
8 – 172
<1
(all samples)
<1
(all samples)
Total Residual
Chlorine
(mg/l)
Turbidity (N.T.U.)
-
-
0.73 – 1.29
0.51 – 0.91
0.30 – 1.47
0.12 – 0.36
0.18 – 0.40
0.13 – 1.26
Number of
Samples
Conductivity
(μS/cm @ 200C)
E. Coli
(MPN/100ml)
Fluoride
(mg/l)
Free Residual
Chlorine
(mg/l)
pH
Appendix 2: Dodder Works Ballyboden
Results Summary
MAY 2013
Number of Samples
Alkalinity
(mg/l aCO3)
Aluminium
(mg/l)
Colour
(°Hazen)
Conductivity
(μS/cm @ 200C)
E. Coli
(MPN/100ml)
Fluoride
(mg/l)
Free
Residual Chlorine
(mg/l)
pH
Total
Residual
Chlorine
(mg/l)
Total Coliforms
(MPN/100ml)
Turbidity (N.T.U.)
Raw
Final: Plant
Output
Final: Pond Outlet
22
22
22
38 – 47
42 – 55
31 – 35
-
112 – 142
<0.05
(all samples)
2.5
(all samples)
167 – 189
<0.05
(all samples)
2.5
(all samples)
146 – 163
1 – 582
<1 – 11
-
0.67 – 0.74
<1
(all samples)
0.56 – 0.76
-
0.60 – 0.89
0.55 – 0.85
7.57 – 7.77
7.25 – 7.64
7.14 – 7.40
-
0.67 – 0.98
0.68 – 0.90
50 – 3973
<1 -119
<1
(all samples)
1.33 – 1.97
0.04 – 0.08
0.05 – 0.09
25 – 30
Appendix 3: Liffey Works Ballymore Eustace
Results Summary
MAY 2013
Raw
Settled:
Upward
Flow
Clarifiers
Settled:
Inclined
Plate
Clarifiers
Filtered
Final:
Contact
Tank
No.1
Final:
Contact
Tank
No.2
Final:
Reservoi
r
31
24
31
31
29
31
31
31 – 34
-
-
-
29 – 32
28 – 31
27 – 31
-
0.13 – 0.16
0.14 – 0.18
<0.05
(all
samples)
<0.05
(all
samples)
<0.05
(all
samples)
<0.05
(all
samples)
Colour (°Hazen)
48 – 75
2 – 2.5
2–3
2 – 2.5
1 – 2.5
1 – 2.5
Conductivity
(μS/cm @ 200C )
96 – 102
-
-
-
2.5
(all
samples)
138 – 148
139 – 151
138 – 149
E. Coli
(MPN/100ml)
<1 - < 10
-
-
-
Fluoride
(mg/l)
-
-
-
-
<1
(all
samples)
0.55 – 0.72
<1
(all
samples)
0.60 – 0.68
<1
(all
samples)
0.60 – 0.68
Free Residual
Chlorine (mg/l)
pH
-
-
-
-
0.43 – 0.52
0.51 – 0.61
0.27 – 0.40
7.35 – 7.68
6.23 – 6.40
6.22 – 6.50
6.22 – 6.60
7.45 – 7.87
7.71 – 8.70
7.56 – 8.00
Total Coliforms
/100ml
<1 – 10
-
-
-
Total Residual
Chlorine (mg/l)
-
-
-
-
<1
(all
samples)
0.51 – 0.61
<1
(all
samples)
0.58 – 0.66
<1
(all
samples)
0.35 – 0.45
1.20 – 2.68
0.71 – 1.18
0.54 – 1.27
0.08 –
<0.10
0.18 – 0.27
<0.1 – 0.26
Number of
Samples
Alkalinity
(mg/l CaCO3)
Aluminium
(mg/l)
Turbidity (N.T.U.)
0.11 – 0.22
Appendix 4: Treated Water (Ex Waterworks)
Aluminium Residuals
MAY 2013
(1) Dodder Works Ballyboden.
Final Water – Plant Output
Al CONCENTRATION
NO. OF SAMPLES
% OF TOTAL
0 - 0.05 mg/l
22
100
0.051 - 0.20
0
0
> 0.20
0
0
TOTAL
22
100
Final Water – Pond Outlet
Al CONCENTRATION
NO. OF SAMPLES
% OF TOTAL
0 - 0.05 mg/l
22
100
0.051 - 0.20
0
0
> 0.20
0
0
TOTAL
22
100
(2) Liffey Works Ballymore Eustace.
Contact Tank No. 1
Al CONCENTRATION
NO. OF SAMPLES
% OF TOTAL
0 - 0.05 mg/l
29
100
0.051 - 0.20
0
0
> 0.20
0
0
TOTAL
29
100
EC PARAMETRIC VALUE: 0.20 mg/l Al (also expressed as 200ug/l Al).
Contact Tank No. 2
Al CONCENTRATION
NO. OF SAMPLES
% OF TOTAL
0 - 0.05 mg/l
31
100
0.051 - 0.20
0
0
> 0.20
0
0
TOTAL
31
100
Reservoir
Al CONCENTRATION
NO. OF SAMPLES
% OF TOTAL
0 - 0.05 mg/l
31
100
0.051 - 0.20
0
0
> 0.20
0
0
TOTAL
31
100
EC PARAMETRIC VALUE: 0.20 mg/l Al (also expressed as 200ug/l Al).
Appendix 5: Cryptosporidium/Giardia Analysis
MAY 2013
(1) Vartry Works Roundwood.
RAW
Date:
FINAL: PLANT OUPUT
Cryptosp- Giardia
oridium
( Cysts/l )
Date:
(Oocysts/l)
07/05/1
3
13/05/1
3
14/05/1
3
20/05/1
3
21/05/1
3
27/05/1
3
28/05/1
3
Cryptosporidium
FINAL: CALLOW HILL
(Oocysts/l)
Giardia
( Cysts/l
)
-
-
0
0
0
0
0
0
-
-
0
0
0
0
0
0
07/05/1
3
12/05/1
3
13/05/1
3
0
0
-
-
-
0
0
-
-
0
0
27/05/1
3
0
0
0
0
-
-
-
Date:
Cryptosp Giardia
-oridium (Cysts/l )
(Oocysts/l)
05/05/1
3
07/05/1
3
12/05/1
3
13/05/1
3
19/05/1
3
20/05/1
3
26/05/1
3
27/05/1
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
(2) Dodder Works Ballyboden.
Date:
RAW
FINAL: PLANT OUPUT
FINAL: POND OUTLET
Cryptos
Giardia Date:
Cryptos
Giardia
Cryptosp- Giardia Date:
(Cysts/l
)
p(Cysts/l
)
p(Cysts/l
)
oridium
oridium
oridium
(Oocysts/l
(Oocysts/l
(Oocysts/l
)
)
)
07/05/1
3
14/05/1
3
28/05/1
3
0
0
0
0
0
0
07/05/1
3
13/05/1
3
27/05/1
3
0
0
0
0
0
0
07/05/1
3
13/05/1
3
27/05/1
3
0
0
0
0
0
0
(3) Liffey Works Ballymore Eustace.
Date:
07/05/13
13/05/13
20/05/13
27/05/13
RAW
Cryptosporidium
(Oocysts/l)
Giardia
(Cysts/l)
0
0
0
0
0
0
0
0
Date:
07/05/13
12/05/13
19/05/13
26/05/13
FINAL
Cryptosporidium
(Oocysts/l)
0
0
0
0
Giardia
(Cysts/l
)
0
0
0
0
Appendix 6: *Diatom Count
MAY 2013
(1) Vartry Works Roundwood Raw.
Sampled
Date
01/05/2013
02/05/2013
03/05/2013
09/05/2013
10/05/2013
13/05/2013
14/05/2013
15/05/2013
16/05/2013
17/05/2013
20/05/2013
21/05/2013
22/05/2013
23/05/2013
27/05/2013
28/05/2013
29/05/2013
30/05/2013
Count/ml
Asterionell
a Algae
1330
955
1090
430
970
730
580
360
340
540
86
117
91
81
55
46
15
14
Diatoma
Melosira
Algae
160
515
420
60
160
80
150
60
100
170
10
22
9
4
3
4
3
3
10
10
30
10
20
0
10
0
0
0
0
4
0
2
2
7
2
1
Navicula
Synedra
Algae
Tabellaria
Algae
340
410
320
50
80
180
50
6
76
80
14
17
21
22
32
37
17
11
480
440
510
190
450
52
300
180
280
520
77
69
50
39
20
26
8
13
40
22
60
40
70
190
60
40
8
70
11
10
14
11
9
10
5
3
*These diatoms are removed by the sand filters in the water treatment plant and
have no impact on the water quality.