The Water Quality Criteria has been incorporated in the Association of District Councils (ADC) standard pet shop licence conditions.

Since then we have had numerous reports of Environmental Health Officers (EHO) actively enforcing these criteria. The tone of these reports is congratulatory.

1. Ammonia
   
2. Nitrite
   
3. Nitrate
   
4. pH
   
5. Dissolved oxygen
   
6. Biological filtration

Members agree to abide by OATA's Water Quality Criteria (now available as a printable PDF download).

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