*Environmental Monitoring of Water Quality as a Planning and Management Tool: A Case… DOI: http://dx.doi.org/10.5772/intechopen.88687*

*Lagoon Environments Around the World - A Scientific Perspective*

0.016

**36**

**pH**

**Temperature** 

**Salinity** 

**OD** 

**Turbidity** 

**Secchi Disc** 

*E. coli*

**Nitrogen** 

**Total phosphorus** 

**Total phosphate** 

**(mg/L)**

**(mg/L)**

**ammonia (mg/L)**

**(NMP/100 mL)**

**(cm)**

**(NTU)**

**of**

**Averages of the results for the parameters at the monitoring points—Spring 2014 (Period 22/09 to 20/12)**

LRF1 LRF2 LRF3 LRF4 LRF5 LRF6 Averages Standard

0.1

0.1

0.1 **Averages of the results for the parameters at the monitoring points—Spring 2015 (Period 22/09 to 21/12)**

0.4

0.4

21.0

132

0.020

0.004

0.000

Deviation

LRF1 LRF2 LRF3 LRF4 LRF5 LRF6 Averages Standard

0.1

0.1

0.1

0.2

0.6

4.2

869

0.019

0.000

0.000

Deviation

8.1

27.7

14.4

6.9

7.0

97.6

1179

0.155

0.016

0.016

8.1

27.6

14.5

6.7

6.2

102.3

874

0.139

0.016

0.016

8.2

27.8

14.5

7.2

7.0

95.0

2916

0.144

0.016

0.016

8.2

27.7

14.5

6.8

6.5

102.2

670

0.150

0.016

0.016

8.1

27.6

14.4

6.8

6.9

99.3

835

0.157

0.016

0.016

8.2

27.8

14.3

7.1

7.8

93.1

1136

0.147

0.016

0.016

8.1

27.6

14.2

6.9

7.7

93.9

642

0.192

0.016

0.016

7.9

27.6

15.4

6.4

2.2

126.5

163

0.203

0.045

0.016

7.9

27.4

15.5

6.1

1.8

134.8

144

0.211

0.040

0.016

7.9

27.6

15.4

6.0

1.7

163.9

396

0.217

0.044

0.016

7.9

27.4

15.4

6.2

2.0

124.3

71

0.185

0.042

7.8

27.6

15.4

6.2

2.3

119.8

235

0.192

0.047

0.016

8.0

27.7

15.4

6.9

2.6

107.6

70

0.183

0.046

0.016

8.0

27.7

15.3

6.7

2.8

108.3

63

0.234

0.050

0.016

**(mg/L)**

**(°C)**

On the basis of the results for monitoring, an attempt was made to identify the cause(s) and origin of the failure to comply with standards detected in the quality of the water and grounded on the occurrence of parameters that were outside the fixed standards and above the limits recommended. In light of this, analyses of the contributing basins adjoining the nearest discharge points were also taken into account and assessed.

On the basis of its history and previous experiences, as well as the analysis of the points that were being monitored by TECMA, it can be inferred that the values found above the limits can be, without question, related to the illegal links to the sewage and drainage system that discharged waste into the LRF. These links can in turn be attributed to the existence of some remaining vestiges of the informal occupation with regard to the respective drainage basins (and sanitary sewage overflow) in question. In areas of this nonformal typology, the local community lacked suitable sanitation (i.e., an appropriate coordinated system for collecting and/or disposal of the sanitary drainage of the buildings). As infiltration in the soil is not a feasible alternative, what tends to occur is that the effluent waste is discharged in any drainage system that is available.
