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The state of water resources in the Philippines - Greenpeace

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(g) Not more than 60 mg/L <strong>in</strong>crease (dry season)<br />

(h) If effluent is <strong>the</strong> sole source <strong>of</strong> supply for irrigation, <strong>the</strong> maximum limits are 1,500 mg/L and 1,000 mg/L,<br />

respectively, for old <strong>in</strong>dustries and new <strong>in</strong>dustries.<br />

(i) Not present <strong>in</strong> concentration to affect fish flavor or taste or ta<strong>in</strong>t<strong>in</strong>g.<br />

(j) If effluent is used to irrigate vegetable and fruit crops which may be eaten raw, Fecal Coliforms should be<br />

less than 500 MPN/100 mL<br />

Industry Classification Based on<br />

BOD <strong>of</strong> Raw Waste<strong>water</strong>s Produced<br />

1. Industries produc<strong>in</strong>g BOD with<strong>in</strong><br />

3,000 to 10,000 mg/L<br />

2. Industries produc<strong>in</strong>g BOD with<strong>in</strong><br />

10,000 to 30,000 mg/L<br />

Maximum Allowable Limits <strong>in</strong> mg/L, accord<strong>in</strong>g to<br />

Time Period and Receiv<strong>in</strong>g Body <strong>of</strong> Water<br />

Effectivity date - Dec. 31, 1991<br />

Inland Waters Coastal Waters<br />

(Class SC<br />

(Class C & D) & SD)<br />

650 or<br />

320 or<br />

90%<br />

95% removal removal<br />

1,000 or<br />

95% removal<br />

2,000 or<br />

90%<br />

removal<br />

3,000 or<br />

90%<br />

removal<br />

Jan. 1, 1992-Dec. 31,<br />

1994<br />

Inland Waters Coastal<br />

Waters<br />

(Class C (Class SC<br />

& D) & SD)<br />

200 or 320 or<br />

97% 95%<br />

removal removal<br />

600 or<br />

97%<br />

removal<br />

900 or<br />

97%<br />

removal<br />

1,000 or<br />

95%<br />

removal<br />

1,500 or<br />

95%<br />

removal<br />

3. Industries produc<strong>in</strong>g more than or 1,500 or<br />

30,000 mg/L<br />

95% removal<br />

Table 10. Interim effluent standards for BOD applicable to old or exist<strong>in</strong>g <strong>in</strong>dustries produc<strong>in</strong>g<br />

strong <strong>in</strong>dustrial wastes (1990 to1994)<br />

Industry Classification Based on BOD <strong>of</strong> Raw<br />

Waste<strong>water</strong><br />

Maximum Allowable Limits <strong>in</strong> mg/L<br />

Based on Receiv<strong>in</strong>g Body <strong>of</strong> Water<br />

Inland Waters Coastal Waters<br />

(Class C & D) (Class SC & SD)<br />

1. Industries produc<strong>in</strong>g with<strong>in</strong> 3,000 to 10,000 mg<br />

BOD/L 130 or 98% removal 200 or 97% removal<br />

2. Industries produc<strong>in</strong>g with<strong>in</strong> 10,000 to 30,000 mg<br />

BOD/L 200 or 99% removal 600 or 97% removal<br />

3. Industries produc<strong>in</strong>g more than 30,000 mg BOD/L 300 or 99% removal 900 or 97% removal<br />

Table 11. Effluent standards for new <strong>in</strong>dustries produc<strong>in</strong>g strong wastes (<strong>in</strong>clud<strong>in</strong>g old or<br />

exist<strong>in</strong>g <strong>in</strong>dustries produc<strong>in</strong>g strong waste whose waste<strong>water</strong> treatment plants are still to be<br />

constructed)<br />

A report by <strong>the</strong> United Nations Industrial Development Organizations (UNIDO)<br />

mentions that while <strong>the</strong>re are several standards already developed, <strong>the</strong> Philipp<strong>in</strong>e<br />

system <strong>of</strong> <strong>in</strong>dustrial effluent standards appears to be relatively <strong>in</strong>sensitive to<br />

actual ambient conditions and to different cost structures due to <strong>the</strong>ir use <strong>of</strong><br />

concentration-based standards.<br />

<strong>The</strong> report observes that this situation allows polluters to meet standards by<br />

dilution and encourage <strong>the</strong> over-extraction <strong>of</strong> ground <strong>water</strong> <strong>in</strong> heavily<br />

<strong>in</strong>dustrialized areas (UNIDO, 1999).<br />

In addition, <strong>the</strong>se standards do not adequately assess today's <strong>water</strong> quality<br />

especially with <strong>the</strong> proliferation <strong>of</strong> toxic chemicals used for and as a byproduct <strong>of</strong><br />

modern-day production processes and o<strong>the</strong>r economic activities. Beryllium,<br />

GREENPEACE | <strong>The</strong> <strong>state</strong> <strong>of</strong> <strong>water</strong> <strong>in</strong> <strong>the</strong> Philipp<strong>in</strong>es 38

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