Menzi Heights Deep Well — Performance Evaluation Report

Well Diagram — Two-Result Comparison

Summit Drilling (June 2024) vs. Current Evaluation (April 2026) · Hover underlined items for consultant notes

Well Cross-Section Menzi Heights Subdivision Production Well · Total Depth 190 m BGL

Static WL (128m)

Pumping WL Summit (156m)

Pumping WL Current (148m)

Screen Zones

Result Comparison Summit Drilling Jun 2024 vs. Current Evaluation Apr 2026

Parameter	Summit 2024	Current 2026	Status
Discharge / Flow Rate Summit (2024): Stabilized at 45 GPM using Goulds 45GS75 pump with Franklin 7.5hp motor. Current (2026): Existing Jiyo pump only achieves 30.2 GPM direct — significantly below required 40–60 GPM range. Engr. Evangelista notes the current pump restricts well yield assessment.	45 GPM	30.2 GPM	↓ BELOW REQ.
Pumping Water Level Summit (2024): Pumping WL stabilized at 156m with 45 GPM discharge. Current (2026): WL stable at 148m — shallower because current pump yields less (30.2 GPM). This limits valid comparison per Engr. Estaño's note.	156 m	148 m	STABLE
Drawdown Summit (2024): 28m drawdown from static 128m → pumping 156m. Well responded well. Current (2026): Only 20m drawdown at lower discharge. Environmental risk rated stable — possible candidate for well development per Engr. Evangelista.	28 m	20 m	STABLE PWL
Pump Efficiency Required: 80% minimum per specification. Current: Existing Jiyo pump operating at only 48% — critically below standard. Engr. Evangelista recommends immediate replacement with 15-stage pump rated 40–60 GPM at 220m TDH.	~80% (req.)	48%	CRITICAL
TDH (Total Dynamic Head) Required: 220 meters minimum. Existing pump max: Only 166.7m — insufficient for full system pressure requirements. New pump must achieve full 220m TDH.	220 m (req.)	166.7 m	NON-COMPLIANT
Lightning / Grounding Required: Grounding resistance ≤5 Ohms. Current: NO grounding or lightning protection installed. At high elevation, this exposes VFD controller and submersible motor to surge damage. Engr. Estaño flags this as urgent — equipment failure risk is high.	≤5 Ohms req.	NONE	URGENT
Water Quality (Microbiological) GRT Laboratory (Aug 22, 2024): Sample from deepwell source collected at 10:00 AM. Total Coliform: <1.1 MPN/100mL ✓ Thermotolerant (Fecal) Coliform: <1.1 MPN/100mL ✓ HPC: 40 CFU/mL ✓ Result: PASSED — Water is colorless and clear. Meets PNSDW 2017 standards.	PNSDW 2017	PASSED ✓	COMPLIANT

* Hover underlined parameters for detailed consultant observations

Key Findings at a Glance

Flow Deficit

−14.8 GPM

vs. 45 GPM target

Efficiency Gap

−32%

48% actual vs. 80% required

PWL Stable

148 m

Well aquifer intact & responsive

Water Quality

PASSED

GRT Lab — PNSDW 2017 compliant

Management Action Table

Priority · Support Needed · Management Notes (editable) · Next Steps — Menzi Heights Deep Well 2026

Critical Items

High Priority

Monitoring

Well Condition

STABLE AQUIFER

Item / Finding	Priority	Support Needed	Management Notes	Next Steps
Pump Replacement Existing Jiyo pump at 48% efficiency — well below 80% standard. TDH 166.7m vs. 220m required.	CRITICAL	Budget Approval Procurement Engr. Evangelista	Replacement urgent. Existing pump cannot meet subdivision demand.	Source 3" submersible pump: 40–60 GPM, 220m TDH, 15 stages min., 220V 3-Phase Engage certified pump supplier for canvass and delivery schedule
Lightning & Grounding Protection No grounding or lightning protection installed. VFD and motor at surge risk at high elevation.	CRITICAL	Electrician / REE Budget Engr. Estaño	Must act before next thunderstorm season. VFD is expensive to replace.	Install air terminal lightning protection system Achieve grounding resistance ≤5 Ohms per Philippine Electrical Code
Flow Rate Gap Current output 30.2 GPM direct / 20.78 GPM to tank vs. required 40–60 GPM.	CRITICAL	New Pump (see above) System Balancing	Linked to pump replacement. Confirm tank and distribution line capacity after upgrade.	Replace pump first, then re-test to verify 40–60 GPM delivery Implement balancing system: source → pipeline → reservoir (avoid fill-and-draw)
Discharge Test Line Installation No dedicated test line exists for periodic performance monitoring and fluid sampling.	HIGH	Plumbing Works Engr. Evangelista		Include test line in pump replacement scope of work Enables: yield testing, well clean-up discharge, and water sampling
Riser Pipe Improvement Current riser pipe configuration makes maintenance and reinstallation cumbersome.	HIGH	Supply / Materials Labor		Specify flexible drop pipe for riser during pump replacement Reduces downtime on future maintenance pull-outs
Preventive Maintenance Program No formal monitoring or PM program in place for production well and electromechanical facilities.	MONITORING	Admin / HOA Retained Engineer		Establish quarterly pump performance evaluation schedule Annual water quality testing (microbiological + physicochemical) Periodic electrical system inspection by REE

SUPPLEMENTAL NOTE FROM EVALUATING ENGINEERS:
The aquifer is intact and the pumping water level remains stable, indicating the well has development potential. A comparative analysis vs. the June 2024 Summit Drilling test cannot be reliably performed at current pump output — the data gap will close once the replacement pump achieves target flow. Priority sequence: ① Lightning/Grounding → ② Pump Replacement → ③ Post-replacement CDT → ④ System balancing → ⑤ Discharge test line installation.