According to the April compliance report, two of 83 Saipan samples were total coliform positive.
During the April monitoring period, a single sample collected on April 7 from the As Lito distribution area contained total coliform.
“Repeat samples as well as a source sample from Isley Well 105 were collected on April 8 with all samples absent of total coliform,” CUC laboratory manager Heidi Yelin said in her report to Division of Environment Quality Director Frank Rabaulliman on May 7.
In March, Yelin said one routine sample from the Maui 4 sump-tank contained total coliform, assumed to be caused by a leak in the transmission lines.
A second routine sample collected on April 20 from that distribution also contained total coliform, she added.
However, none of the repeat samples collected on April 21 contained total coliform but CUC water staff discovered a leak within the Sablan Quarry valve box.
The leak, she said, was repaired and special confirmation samples collected on April 26 were free of total coliform.
On Tinian, Yelin said they collected six routine samples on April 12 and none of the samples contained total coliform.
Tinian’s public water system complied with the total coliform rule during the monitoring period, she said.
On Rota, Yelin said its public water system also complied with the total coliform rule based on the three routine safe drinking water samples that were found to have no total coliform.
