Lead Water Treatment Plant Operator
City of Tucson Water – Clearwater Plant · Tucson, AZ
2021
Monitor SCADA and HMI screens around the clock for plant alarms, pump status, and raw water quality at a facility serving 180,000+ residents.
Run coagulation and flocculation jar tests each shift and adjust chemical dosing to hold turbidity under 0.1 NTU.
Dose chlorine and fluoride to meet SDWA limits and complete regulatory lab sampling with zero EPA violations over nine years.
Lead shift safety reviews, lockout/tagout procedures, and mentor two new operators through their first year of Grade III work.
Reduce chemical costs by 12% by tightening jar-test dosing while keeping finished-water quality inside permit.
Water Treatment Plant Operator II
Pima Regional Utilities · Tucson, AZ
2018 · 2021
Operated a surface-water plant with SCADA and HMI monitoring of pumps, filters, and chemical feed systems.
Performed coagulation and flocculation jar tests and kept finished turbidity under 0.1 NTU through the spring runoff season.
Dosed chlorine and fluoride and collected weekly SDWA lab samples for the utility, with no violations in the contract term.
Ran membrane filtration backwash cycles and preventive maintenance on pumps and valves, cutting unplanned downtime by 40%.
Lowered chemical costs by 9% after a dosing study that matched feed rates to measured jar-test results.
Operator-in-Training
Marana Water District · Marana, AZ
2016 · 2018
Learned SCADA and HMI monitoring, coagulation and flocculation jar tests, and chlorine dosing on a small groundwater plant.
Held turbidity under 0.1 NTU and completed SDWA lab sampling under a Grade II mentor during the two-year training.
Practiced lockout/tagout on pumps and valves and kept preventive maintenance records in the CMMS.
Reduced chemical costs by 6% in year two by matching feed rates to jar-test results.
Completed membrane filtration backwash training and shadowed night-shift safety rounds.
Maintenance Technician
Desert Valley Irrigation Co. · Casa Grande, AZ
2014 · 2016
Performed preventive maintenance on irrigation pumps and valves, cutting unplanned downtime by 35% over two seasons.
Followed lockout/tagout procedures before opening pumps, gearboxes, and control panels.
Logged CMMS work orders for inspections, filter changes, and chemical-feed checks on small treatment units.
Monitored basic SCADA alarms and reported turbidity and chlorine readings that kept water quality inside permit.
Reduced chemical costs by 8% by correcting over-dosing found during routine process checks.