Environment Waikato is continuing to monitor the effects of last Saturday’s effluent spill into the Mangaokewa Stream, at Te Kuiti.
Late yesterday afternoon the council received the results of water sampling carried out on Sunday.
The results showed faecal coliform counts in the Mangaokewa Stream were still considerably higher than normal.
Environment Waikato scientist Bill Vant said the contaminants appeared to be moving through the system as expected.
“However, there is still potential for fluctuations in faecal coliform counts.
“Effluent that flowed into a tomo may still be working its way through the ground, so at this stage results are inconclusive.”
Waikato District Health Board warnings remain in place.
Waikato Medical Officer of Health Dr Dell Hood is advising people to boil water used for drinking and brushing teeth, and to avoid swimming in the Mangaokewa Stream.
Investigations into what caused the spill are ongoing.