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Mona schedules PRV replacement; several homes to lose water during Sept. 16–17 work
Summary
Public works staff said Clay Val will replace a pressure reducing valve (PRV) and install a bypass on Sept. 17; the project requires shutting down and draining lines on the afternoon of Sept. 16 and will disrupt water to several homes in the vicinity.
Mona public works staff told the council Sept. 9 that a failing pressure‑reducing valve (PRV) near the cemetery will be replaced Sept. 17, and a three-inch bypass will be installed to allow future maintenance without extended outages.
Garrett (staff member) said Clay Val refurbished three of four PRVs earlier and found one valve in particularly poor condition; one PRV had not been serviced since 1969 and another valve and its shutoff valves were seized open. Because the shutoff valves serving the PRV could not isolate the line, staff must shut off and drain the system segment to permit replacement and bypass installation.
Service disruption: staff said the shutdown and drain will begin the afternoon of Sept. 16 (around 3:00 p.m. per staff discussion) and Clay Val crews will be on site at 7:00 a.m. Sept. 17 to replace the valve and install the bypass. Staff estimated that once the bypass is installed they can begin refilling lines and re‑establishing service within about two hours, but acknowledged the nighttime drain plus morning work could cause water interruptions for some customers for an extended period. Garrett identified about six to seven homes that will be affected, naming Jay Meekum’s shop and Gordon Jarrett’s house as guaranteed to lose water during the work.
Notifications and mitigation: staff said letters and text alerts were being sent to affected residents and that water will be offered at the city building for residents who need it; staff also asked customers with well pumps to turn them off for the shutdown window.
Maintenance plan: staff recommended negotiating either a three‑ or five‑year maintenance plan with Clay Val to prevent similar failures; Clay Val recommended five‑year maintenance cycles for PRVs.
Why it matters: the PRV is at risk of major failure; replacing the unit and adding a bypass reduces the risk of uncontrolled overpressure or a catastrophic failure that could damage customer lines or infrastructure.
Staff requested council’s support for the replacement schedule and noted they will continue to notify affected customers through letters, texts and social media.
