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If your boiler is a worcester

If your boiler is a worcester bosch 25si or baxi duo tec 40he the link below may also be of help. Why treat waste water? well old septic tanks simply don't work very well old septic tanks discharge raw sewage or raw effluent to the ground, water tables, streams and rivers this effluent has a high pollutant level it also causes your soakaway and drainage to fail because its fairly.

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