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City reports intermittent coliform hits at distribution site; engineers and grants sought
Summary
City staff told council a recent total-coliform repeat appeared in a distribution site near the school; managers said engineers have been engaged to evaluate system upgrades and that grants may be pursued if mandatory treatment or chlorination becomes required.
City staff reported intermittent total-coliform detections at a distribution sample site in Mount Angel, including a repeat positive sample near the school. The manager said subsequent repeat samples produced both positive and clean results and that the city has engaged engineers to evaluate potential system upgrades and cost estimates.
On the record, staff said the positive results did not yet trigger a mandatory chlorination requirement because repeated test patterns were inconsistent, but echoed public-health caution and noted the health authority has been consulted. "We are one sample away from the potential of having to chlorinate our system here," the city manager said, adding that the city will pursue grants and engineer analysis to determine what upgrades are needed and what funding sources are available.
Why it matters: distribution-site coliform detections are public-health signals that can lead to required mitigation such as system disinfection, public notice, or infrastructure upgrades. Staff said they are reviewing sample-site selection and will coordinate with the health authority and engineers to avoid unnecessary mandatory actions while ensuring public safety.
Next steps: staff will continue sampling, engage engineers to scope improvements, and research grant programs that could fund required upgrades. Council asked for continued reporting and timelines if mandated actions become necessary.
