Waterworks Raw, In-Process & Final Water Quality
Monthly Report: JUNE 2013
Introduction
This report summarises the results of monitoring at the Ballyboden, Ballymore Eustace, and
Roundwood waterworks carried out during JUNE 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)
Acceptable to
consumers & no
abnormal
change
1.0
No. of Samples
No. Inside Limit
% Compliance
19
19
100
30
30
100
2500
19
19
100
6.5 - 9.5
19
19
100
0.8
19
19
100
0
30
30
100
0
30
30
100
Final Water – Callow Hill:
(ii)
Parameter
Parametric
Values(s)
No. of Samples
No. Inside Limit
% Compliance
Colour (°Hazen)
Acceptable to
consumers &
no abnormal
change
1.0
30
30
100
30
30
100
2500
30
30
100
6.5 - 9.5
30
30
100
0.8
30
30
100
0
30
28
93.3
0
30
30
100
Turbidity
(N.T.U.)
Conductivity
(μS/cm @ 200C)
pH
Fluoride
(mg/l)
Total Coliforms
/100ml
E. Coli
(MPN/100ml)
Two samples did not comply with the parametric value for Total Coliform; the details are as
follows;
Date:
05/06/13
22/06/13
Total Coliform:
63 MPN/100ml.
1 MPN/100ml.
Total Residual Chlorine:
0.60mg/l
0.58mg/l
Free Residual Chlorine:
0.54mg/l
0.51mg/l
The result for the sample collected on 05/06/13 can be attributed to maintenance issues at
the sampling point. Follow up samples were satisfactory for the above dates.
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.
Final Water – Plant Output:
(i)
Parameter
Colour
(°Hazen)
Turbidity
(N.T.U.)
Conductivity
pH
(μS/cm @
200C)
Aluminium
(mg/l)
Parametric
Value(s)
No. of Samples
No. Inside Limit
% Compliance
Acceptable to
consumers & no
abnormal
change
1.0
19
19
100
19
19
100
2500
19
19
100
6.5 - 9.5
19
19
100
0.2
19
19
100
Fluoride
0.8
19
19
100
0
19
19
100
0
19
19
100
Parametric
Values(s)
No. of Samples
No. Inside Limit
% Compliance
Acceptable to
consumers & no
abnormal
change
1.0
19
19
100
19
19
100
2500
19
19
100
6.5 - 9.5
19
19
100
Aluminium
(mg/l)
0.2
19
19
100
Fluoride
(mg/l)
0.8
19
19
100
Total
Coliforms
(MPN/100ml)
0
19
19
100
E. Coli
(MPN/100ml)
0
19
19
100
(mg/l)
Total
Coliforms
(MPN/100ml)
E. Coli
(MPN/100ml)
(ii)
Final Water – Pond Outlet:
Parameter
Colour
(°Hazen)
Turbidity
(N.T.U.)
Conductivity
(μS/cm @
200C)
pH
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
Colour
(°Hazen)
Turbidity
(N.T.U.)
Conductivity
(μS/cm @
200C)
pH
Aluminium
(mg/l)
Fluoride
(mg/l)
Total
Coliforms
(MPN/100ml)
E. Coli
(MPN/100ml)
Parametric
Values(s)
No. of Samples
No. Inside Limit
% Compliance
Acceptable to
consumers & no
abnormal
change
1.0
30
30
100
30
30
100
2500
29
29
100
6.5 - 9.5
0.2
30
30
30
30
100
100
0.8
30
29
96.7
0
30
30
100
0
30
30
100
A sample did not comply with the parametric value for Fluoride as it was above the 0.6mg/l to
0.8 mg/l fluoride range required by Fluoridation of Water Supplies Regulations 2007 (S.I.
No. 42 of 2007). The details are as follows;
Date:
05/06/13
Fluoride:
0.86 mg/l.
A follow up sample was satisfactory.
(ii)
Final Water [Contact Tank No.2]:
Parameter
Colour
(°Hazen)
Turbidity
(N.T.U.)
Conductivity
(μS/cm @
200C)
pH
Aluminium
(mg/l)
Parametric
Values(s)
No. of Samples
No. Inside Limit
% Compliance
Acceptable to
consumers & no
abnormal
change
1.0
30
30
100
30
30
100
2500
30
30
100
6.5 - 9.5
0.2
30
30
30
30
100
100
Fluoride
(mg/l)
Total
Coliforms
/100ml
E. Coli
(MPN/100ml)
0.8
30
29
96.7
0
30
30
100
0
30
30
100
A sample did not comply with the parametric value for Fluoride as it was above the 0.6mg/l to
0.8 mg/l fluoride range required by Fluoridation of Water Supplies Regulations 2007 (S.I.
No. 42 of 2007). The details are as follows;
Date:
Fluoride:
05/06/13
0.86 mg/l.
A follow up sample was satisfactory.
(ii)
Final Water [Reservoir]:
Parameter
Colour
(°Hazen)
Turbidity
(N.T.U.)
Conductivity
(μS/cm @
200C)
pH
Aluminium
(mg/l)
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
30
30
100
30
30
100
2500
30
30
100
6.5 - 9.5
0.2
30
30
30
30
100
100
0.8
30
30
100
0
30
30
100
0
30
30
100
4. Aluminium Residuals - Treated Waters.
A more detailed breakdown of aluminium residuals in final water (ex. waterworks, however
Vartry Works Roundwood is excluded – 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 reservoirs) is presented in Appendix 5. This appendix may
also contain results of investigative samples for as the need arises.
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
JUNE 2013
Raw
Filtered
Plant Final
Callow Hill
30
30
30
30
Alkalinity (mg/l
CaCO3)
13 – 23
-
22 – 28
23 – 29
Aluminium
(mg/l)
Colour (°Hazen)
-
-
-
-
14 – 27.5
11 – 16
5 – 10
4 – 7.5
87 – 92
-
114 – 119
110 – 122
<10 – 11
<1 – 1
-
-
<1
(all samples)
0.61 – 0.70
<1
(all samples)
0.61 – 0.78
-
-
0.69 – 0.90
0.43 – 0.65
6.4 – 8.4
6.4 – 7.4
7.3 – 8.9
7.20 – 8.49
Total
Coliforms/100ml
<10 – 63
4 – 921
<1
(all samples)
<1 – 63
Total Residual
Chlorine
(mg/l)
Turbidity (N.T.U.)
-
-
0.80 – 1.07
0.50 – 0.72
0.55 – 1.27
<0.1 – 4.5
0.11 – 0.99
<0.10 – 0.23
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
JUNE 2013
Raw
Filtered *
Final:
Plant Output
Final:
Pond Outlet
19
2
19
19
41 – 46
-
49 – 63
31 – 44
-
-
22.5 – 30
-
<0.05
(all samples)
0–5
<0.05
(all samples)
0–5
113 – 132
-
178 – 205
146 – 190
1 – 155
-
<1
(all samples)
-
<1
(all samples)
0.65 – 0.79
<1
(all samples)
0.65 – 0.78
-
-
0.67 – 0.89
0.67 – 0.80
7.32 – 7.78
-
7.38 – 8.14
7.21 – 7.44
-
-
0.74 – 0.98
0.79 – 0.91
Total Coliforms
(MPN/100ml)
145 – 921
<1
(all samples)
<1
(all samples)
<1
(all samples)
Turbidity (N.T.U.)
1.40 – 2.10
-
0.04 – 0.10
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)
* Sampling commenced at this location on 27/06/13.
0.04
– 0.14
Appendix 3: Liffey Works Ballymore Eustace
Results Summary
JUNE 2013
Raw
Settled:
Inclined
Plate
Clarifiers
30
Filtered
Final:
Contact
Tank No.1
30
Settled:
Upward
Flow
Clarifiers
20
Final:
Reservoir
30
Final:
Contact
Tank
No.2
30
30
31 – 35
-
-
-
24 – 32
29 – 35
24 – 34
-
0.08 –
0.36
0.09 –
1.74
<0.05
(all
samples)
<0.05
(all
samples)
<0.05
(all
samples)
<0.05
(all
samples)
Colour (°Hazen)
37 – 65
2–5
1–4
<1 – 4
<1 – 2.5
<1 – 2.5
<1 – 3
Conductivity
(μS/cm @ 200C )
97 – 105
-
-
-
138 – 154
139 – 154
138 – 153
E. Coli
(MPN/100ml)
<1 - < 10
-
-
-
Fluoride
(mg/l)
-
-
-
-
<1
(all
samples)
0.60 – 0.86
<1
(all
samples)
0.61 –
0.86
<1
(all
samples)
0.61 –
0.83
Free Residual
Chlorine (mg/l)
pH
-
-
-
-
0.33 – 0.60
7.10 –
7.90
6.23 –
6.80
6.23 –
6.70
6.24 –
6.70
7.42 – 8.60
0.42 –
0.66
7.61 –
8.70
0.28 –
0.44
7.41 –
8.80
Total Coliforms
/100ml
<1 – 30
-
-
-
Total Residual
Chlorine (mg/l)
-
-
-
-
<1
(all
samples)
0.43 – 0.67
<1
(all
samples)
0.49 –
0.79
<1
(all
samples)
0.36 –
0.49
0.79 –
1.31
0.30 –
0.82
0.41 –
2.60
<0.10 –
0.53
<0.1 –
0.30
<0.1 –
0.62
<0.1 – 0.23
Number of
Samples
Alkalinity
(mg/l CaCO3)
Aluminium
(mg/l)
Turbidity
(N.T.U.)
30
Appendix 4: Treated Water (Ex Waterworks)
Aluminium Residuals
JUNE 2013
(1) Dodder Works Ballyboden.
Final Water – Plant Output
Al CONCENTRATION
NO. OF SAMPLES
% OF TOTAL
0 - 0.05 mg/l
19
100
0.051 - 0.20
> 0.20
TOTAL
0
0
19
0
0
100
Final Water – Pond Outlet
Al CONCENTRATION
NO. OF SAMPLES
% OF TOTAL
0 - 0.05 mg/l
19
100
0.051 - 0.20
0
0
> 0.20
0
0
TOTAL
19
100
(2) Liffey Works Ballymore Eustace.
Contact Tank No. 1
Al CONCENTRATION
NO. OF SAMPLES
% OF TOTAL
0 - 0.05 mg/l
30
100
0.051 - 0.20
0
0
> 0.20
0
0
TOTAL
30
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
30
100
0.051 - 0.20
0
0
> 0.20
0
0
TOTAL
30
100
Reservoir
Al CONCENTRATION
NO. OF SAMPLES
% OF TOTAL
0 - 0.05 mg/l
30
100
0.051 - 0.20
0
0
> 0.20
0
0
TOTAL
30
100
EC PARAMETRIC VALUE: 0.20 mg/l Al (also expressed as 200ug/l Al).
Appendix 5: Cryptosporidium/Giardia Analysis
JUNE 2013
(1) Vartry Works Roundwood.
RAW
Date:
FINAL: PLANT OUPUT
Cryptosp- Giardia
oridium
( Cysts/l)
(Oocysts/l)
04/06/13
10/06/13
11/06/13
Date:
Cryptosporidium
(Oocysts/l)
FINAL: CALLOW HILL
Giardia
(Cysts/l)
0
0
0
0
04/06/13
10/06/13
0
0
0
0
0
0
-
-
-
17/06/13
0
0
16/06/13
0
0
18/06/13
0
0
17/06/13
0
0
24/06/13
0
0
23/06/13
0
0
25/06/13
0.01
0
24/06/13
0
0
-
-
-
30/06/13
0
0
Date:
Cryptosporidium
(Oocysts/l)
04/06/1
3
16/06/1
3
17/06/1
3
23/06/1
3
24/06/1
3
30/06/1
3
Giardia
(Cysts/l )
0
-
0
-
-
-
0
0
0
0
0
0
0
0
0
0
(2) Dodder Works Ballyboden.
RAW
Date:
Cryptosporidium
(Oocysts/l)
04/06/1
3
11/06/1
3
18/06/1
3
25/06/1
3
FINAL: PLANT OUPUT
Giardia
( Cysts/l)
0
0
0
0
0
0
0
0
Date:
Cryptosporidium
(Oocysts/l)
04/06/1
3
10/06/1
3
17/06/1
3
24/06/1
3
FINAL: POND OUTLET
Giardia
( Cysts/l)
0
0
0
0
0
0
0
0
Date:
Cryptosporidium
(Oocysts/l)
04/06/1
3
10/06/1
3
17/06/1
3
24/06/1
3
Giardia
(Cysts/l)
0
0
0.001
0
0
0
0
0
(3) Liffey Works Ballymore Eustace.
RAW
Date:
04/06/13
10/06/13
17/06/13
24/06/13
-
Cryptosporidium
(Oocysts/l)
0
0
0
0
-
FINAL
Giardia (Cysts/l)
0
0
0
0
-
Date:
04/06/13
09/06/13
18/06/13
23/06/13
30/06/13
Cryptosporidium
(Oocysts/l)
0
0
0
0
0
Giardia
(Cysts/l)
0
0
0
0
0
Appendix 6: *Diatom Count
JUNE 2013
(1) Vartry Works Roundwood Raw.
Sampled
Date
04/06/2013
07/06/2013
10/06/2013
17/06/2013
24/06/2013
Count/ml
Asterionella
Algae
5
4
1
0
1
Diatoma
1
1
2
-
Melosira
Algae
1
1
0
2
1
Navicula
5
4
0
-
Synedra
Algae
6
4
0
2
-
Tabellaria
Algae
3
1
1
0
1
*These diatoms are removed by the sand filters in the water treatment plant and have
no impact on the water quality.