印度官员表示，他们的供水是安全的。

Officials in India say its water supply is safe.

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即使管道供水系统在水源处是安全的。

Even if a piped water supply is safe at its source.

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作泄压阀用时，可维持供水路压力在设定的安全值之下；

As a pressure relief valve, it can maintain the water pressure in the set way below the safe value;

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作泄压阀用时，可维持供水路压力在设定的安全值之下；

As a pressure relief valve, it can maintain the water pressure in the set way below the safe value;

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