Water Softener Installation Inspection

Per WQA guidelines, water hardness must be tested before installation to properly size the softener. Hardness is measured in grains per gallon (gpg) — 7+ gpg typically warrants a softener. System must be sized for household water usage (average 80 gallons per person per day) and hardness level. Unit must be NSF/ANSI 44 certified.

1. Verify water hardness test was performed (pre-installation baseline)

2. Check softener grain capacity matches calculated daily demand (gpg × daily gallons)

3. Confirm unit is NSF/ANSI 44 certified (check nameplate)

4. Verify iron and manganese levels tested (affects softener media selection)

5. Check that pH level is within softener operating range (typically 6.5–8.5)

- Softener undersized for household demand — hard water breakthrough before regeneration

- No pre-installation water test — wrong treatment selected

- Iron not tested — iron fouls resin bed, requires iron-specific pretreatment

Per UPC/IPC, water softener must be installed on a level surface, near the main water entry point, before the water heater but after any outdoor hose bibs (outdoor faucets should receive unsoftened water). Adequate drainage must be available for regeneration discharge. Minimum 10 feet of drain line, no more than 30 feet to floor drain.

1. Verify unit is on a level, stable surface that can support weight when full (300–500 lbs)

2. Confirm installation is after main shutoff but before water heater

3. Check outdoor hose bibs bypass the softener (softened water harms plants)

4. Verify drain line runs to approved floor drain, laundry standpipe, or utility sink

5. Confirm electrical outlet nearby for timer/electronic controls (120V, non-switched)

6. Check adequate space for salt refills and maintenance access

- Installed after water heater — heater still gets hard water

- Outdoor hose bibs on softened water — kills landscaping, wastes salt

- Drain line too long or uphill — regeneration fails to discharge properly

Per UPC/IPC, connections must use approved materials (copper, CPVC, PEX). A bypass valve must be installed to allow water service during softener maintenance. All connections must be leak-free and properly supported. Inlet and outlet must not be reversed. Water pressure must not exceed softener rating (typically 125 PSI max).

1. Verify inlet and outlet connections are correct (inlet = hard water from main, outlet = to house)

2. Check bypass valve is installed and operates properly (3-valve or single-lever bypass)

3. Test all connections for leaks under pressure

4. Verify pipe material is compatible (no galvanized steel with copper — dielectric unions required)

5. Check water pressure — if over 80 PSI, pressure reducing valve should be installed

6. Confirm shut-off valves on both inlet and outlet sides

- Inlet and outlet reversed — water bypasses resin bed, no softening occurs

- No bypass valve — entire house loses water during softener service

- Leaks at connections — especially push-fit fittings under vibration

Per UPC/IPC, softener drain must discharge through an air gap to prevent backflow (typically 2× drain pipe diameter above flood rim of receiving fixture). Drain line must be rigid or reinforced tubing (not collapsible). Overflow drain must be piped to prevent water damage if brine tank overfills. Discharge must not go to septic in some jurisdictions.

1. Verify air gap at drain discharge point (prevents contamination of water supply)

2. Check drain line routing — no kinks, no uphill sections (gravity flow)

3. Confirm drain line diameter matches manufacturer specifications (typically 1/2")

4. Verify overflow fitting is connected and routed to drain

5. Check local code for septic system discharge restrictions (some areas prohibit)

6. Test regeneration cycle — observe drain flow, check for leaks

- No air gap — backflow contamination risk (code violation)

- Drain line kinked or crushed — regeneration fails, brine overflows

- Discharge to septic — high salt content may damage septic bacterial action

Per manufacturer specifications, brine tank must be filled with the correct type of salt (pellets or crystals — not rock salt). Salt level should be maintained at least 1/3 full but not packed above the water level. Brine tank must be clean and free of salt bridges or mushing. Safety float must be operational to prevent overflow.

1. Verify correct salt type per manufacturer recommendation (typically pellets for most units)

2. Check initial salt fill level — approximately 2/3 full for first fill

3. Confirm brine well (salt grid plate) is properly seated in tank

4. Verify safety float valve operates — fill test with water to check shutoff

5. Check venturi and nozzle assembly are clean and properly installed

6. Ensure brine tank lid fits properly to prevent debris contamination

- Wrong salt type — rock salt causes sediment and clogging

- Salt bridge (hardened crust with air gap below) — system regenerates with plain water

- Salt mushing (sludge at bottom) — blocks brine draw, reduces effectiveness

Per manufacturer specifications, the softener control valve must be programmed for: water hardness (gpg), resin tank capacity (grains), number of occupants, and regeneration schedule. Demand-initiated regeneration is preferred over timer-based (saves salt and water). Time of day for regeneration should be set to low-usage period (typically 2:00 AM).

1. Verify hardness setting matches actual water test results

2. Confirm capacity setting matches the resin tank size

3. Check regeneration type: demand-initiated preferred over timed

4. Verify regeneration time is set for low-usage period (2:00–4:00 AM typical)

5. Confirm day/time clock is accurate

6. Check salt dosage setting per manufacturer table for your hardness level

7. Verify reserve capacity setting (ensures soft water availability before regeneration triggers)

- Hardness set too low — hard water breakthrough before regeneration

- Timer-based regeneration on low-use household — wastes salt and water

- Regeneration during peak usage — household gets hard water during cycle

Per NSF/ANSI 44 and manufacturer instructions, the installed softener must be tested to verify proper operation. Post-installation water hardness should read 0–1 gpg. A complete manual regeneration cycle must be run to verify all phases: fill, brining, brine rinse, backwash, and fast rinse. All connections must be leak-free.

1. Run a manual regeneration cycle — observe all phases complete without error

2. Test outlet water hardness — should read 0–1 gpg (soft water confirmed)

3. Check for leaks at all connections during regeneration (highest pressure point)

4. Verify drain flow during regeneration is adequate (no backups or overflow)

5. Test bypass valve operation — hard water flows when bypassed

6. Measure water pressure drop across softener (should be less than 5 PSI)

7. Run hot water until fully softened water reaches water heater

- Water still hard after installation — inlet/outlet reversed, or resin not charged

- Excessive pressure drop — undersized unit or clogged distributor

- Regeneration incomplete — drain flow restricted or control valve malfunction