Philippines

Philippines: NDCC Update - Situation Report No. 47 on Tropical Storm "Ondoy" (Ketsana) and Typhoon "Pepeng" (Parma)

Attachments

DATE: 11 November 2009, 8:00 AM

Sources: AFP. PNP, BFP, PCG, DOH, DSWD, DILG, DepEd. OCDRCs I, II, III. IV-A, IV-B, V, VI. CAR & NCR & UN-OCHA

(Extract)

II. HUMANITARIAN RESPONSES BY CLUSTER

Highlights

- An Environmental Assessment was jointly conducted by UNEP/OCHA Environment Unit from October 8-20, 2009. Result of assessment revealed the following:

- Hydro dynamic of Laguna Lake was the key issue of the flooding situation during TS "Ondoy" as water from Marikina River was partly diverted into Laguna Lake via Mangahan Floodway causing the water table in the bay to rise to a level of 13.9 meters compared to about 11.5 meters under normal circumstances

- Flooding had a negative impact on the environment due to washed out of contaminants from various small-to medium-size industrial sites located in the affected areas

- Majority of contaminants were carried by the floodwaters to Laguna Lake

- Outbreak of diseases related to lack of safe drinking water supply became an issue

Recommendations

- Draining of submerged areas in Metro Manila by ensuring operability of pump stations; provide additional capacity to pump stations; provide mobile pump capacity in areas not included in the dike system and inform the public specifically children not to use standing water for cleaning, drinking and recreational purposes

- Drinking water - water quality must be monitored on a daily basis at the end-user in close coordination with WASH cluster, MMDA and MWSS. When water samples from the network are contaminated, network must be sealed off to prevent the spread of contamination. Details of the assessment was published at the UNEP/OCHA website