THE HSE is continuing to monitor the Ennis water supply, even though it has “generally” been within the statutory limits for drinking water since the installation of the temporary filtration system.
According to the HSE West, in order to ensure the efficiency and effectiveness of the system a heavy programme of monitoring and sampling is continuing.
This includes daily monitoring of raw and treated water for general coliform, E Coli, turbidity, colour and chlorine. Weekly monitoring is also carried out for Cryptosporidium.
All samples of treated water were negative for E Coli and Cryptosporidium. The chlorine dosage levels have also been reduced as a consequence of the installation and successful operation of the treatment system. However it was decided not to remove the limited precautionary boil notice just yet, as weather conditions had not varied enough since the installation to adequately test the system.
“Levels of cryptosporidium, clostridium perfringes and giardia tend to occur in the raw water to a much lesser degree in summer early autumn time of year. However, a seasonal escalation of concentration in this regard would be expected from now on,” the HSE said. The health service said it hoped that by the time the next meeting took place, confidence in the supply would be such that it would be possible to completely remove the boil notice.
Meanwhile, a boil notice had been issued for the first time ever in the 30-year history of the Kilmaley-Inagh Group water scheme, following the discovery of a small quantity of E-coli. The scheme caters for 1,800 households and is the largest group water scheme in the country. A new treatment works was due to replace the scheme on June 30 but was delayed. The group water scheme holders were informed that the scheme would “go to production” on the week beginning September 11. Last Thursday, the new system was not in place.