Best Water Softener for Phoenix, AZ — 17 Things to Know BEFORE You Buy!

Written by Craig "The Water Guy" Phillips

1. The Extreme Water Crisis Hiding Inside Every Phoenix Home

Your water heater is dying faster than it should, and Phoenix's 12.3 GPG water hardness is the silent killer. While you're focused on surviving another 115-degree summer, calcium and magnesium minerals are crystallizing inside your pipes, coating your appliances, and costing you thousands in premature replacements.

Phoenix's water hardness of 12.3 grains per gallon places it firmly in the "extremely hard" category — a classification that affects fewer than 15% of U.S. cities. To understand what this means, imagine each grain per gallon as a teaspoon of chalk dust dissolved in every gallon flowing through your home. At 12.3 GPG, that's more than 12 teaspoons of mineral content in every gallon your family uses.

The Salt River Project and Central Arizona Project deliver this mineral-laden water from the Colorado River, Salt River, and Verde River — all naturally rich in dissolved limestone and gypsum from the Sonoran Desert's geological foundation. These aren't contaminants that treatment plants remove because they're not health hazards — but they're infrastructure destroyers.

Every day, a typical Phoenix household circulates 300 gallons of this extremely hard water through expensive appliances never designed to handle such mineral concentrations. Your tankless water heater, purchased for energy efficiency, becomes 35% less efficient within 18 months. Your dishwasher's heating element calcifies. Your washing machine's pump works harder against scale buildup, shortening its lifespan from 11 years to 7.

The financial impact hits Phoenix homeowners in three waves: immediate soap and detergent waste, accelerated appliance replacement, and the hidden energy penalty of scale-coated heating elements. Conservative estimates put this "hard water tax" at $1,800 annually for a typical Phoenix household — money that disappears not through dramatic failures, but through the steady, invisible degradation that extremely hard water inflicts on everything it touches.

2. What 12.3 GPG Does to Your Phoenix Home

At Phoenix's 12.3 GPG hardness level, calcium carbonate doesn't just coat your fixtures — it forms geological deposits inside your plumbing. The mineral concentration is so high that heating any water above 140°F triggers immediate precipitation, creating limestone-hard scale on heating elements and pipe walls.

Consider your water heater, the most expensive casualty of extremely hard water. At 12.3 GPG, a 40-gallon electric water heater loses 30-40% of its efficiency within 18-24 months. The heating elements become encased in a mineral shell that acts like insulation, forcing the unit to run longer cycles to achieve the same temperature. For Phoenix households using 80-100 gallons of hot water daily, this efficiency loss translates to $40-60 in additional monthly electricity costs.

Phoenix's older neighborhoods, particularly those built before 1980, feature galvanized steel pipes that are especially vulnerable to mineral buildup. At 12.3 GPG, these pipes experience measurable diameter reduction within 5-7 years. The calcium and magnesium ions bond to iron oxide (rust) in the galvanized coating, creating a concrete-like deposit that gradually narrows water flow. Homes near Central Phoenix and the Maryvale area, where galvanized plumbing is common, often require partial re-piping by year 8-10 of extremely hard water exposure.

Appliance lifespan reduction at 12.3 GPG is dramatic and predictable. Dishwashers in Phoenix average 6-7 years instead of the national average of 10 years. The spray arms clog with mineral deposits, the heating element calcifies, and the internal components corrode from constant exposure to concentrated minerals. Tankless water heaters, increasingly popular in Phoenix for their energy efficiency, often void their warranties if installed without a water softener in areas exceeding 7 GPG — and Phoenix's 12.3 GPG is nearly double that threshold.

The soap and detergent waste at 12.3 GPG is mathematically significant. Calcium and magnesium ions react with soap molecules to form insoluble precipitates — soap scum — instead of the cleansing lather you expect. This forces Phoenix households to use 3-4 times more soap, shampoo, and detergent to achieve basic cleaning results. For a family of four, this adds approximately $480 annually in extra cleaning products — a direct tax on living with extremely hard water.

Skin and hair effects intensify at 12.3 GPG because calcium ions actively strip moisture from skin cells and create a mineral film that blocks natural oils. Phoenix residents often attribute dry, irritated skin to the desert climate, but the 12.3 GPG water hardness is an equal contributor. The mineral film left on skin after showering requires soap to remove, but soap forms scum rather than lather, creating a cycle of ineffective cleansing that leaves residue and irritation.

Laundry becomes a visible problem at this hardness level. Mineral deposits embed in fabric fibers, making clothes feel rough and look dingy despite multiple wash cycles. White fabrics develop a grey tint from mineral accumulation, and colored fabrics fade prematurely as calcium deposits interfere with dye molecules. The mineral buildup also makes fabrics less absorbent — towels become less effective, and athletic wear retains odors because minerals block fiber breathing.

For Phoenix households dealing with 12.3 GPG water, the combined annual cost — energy losses, appliance depreciation, excess soap, and premature replacements — approaches $2,200 per year. This "extremely hard water tax" represents the hidden cost of living in the Sonoran Desert without proper water conditioning.

3. Phoenix's Compound Contaminant Challenge

Beyond the 12.3 GPG hardness baseline, Phoenix residents are also contending with chlorine, fluoride, arsenic, and iron — each of which interacts with water hardness in its own problematic way. This layered contamination profile creates challenges that extend far beyond simple mineral deposits.

Chlorine in Phoenix Water

Phoenix adds chlorine as the primary disinfectant for its water supply, with concentrations varying seasonally between 2.0-4.0 mg/L. The chlorine enters Phoenix's system at treatment plants as a necessary public health measure, but its interaction with 12.3 GPG hardness creates compounded problems for residents.

At extremely hard water levels, chlorine accelerates the corrosion of rubber gaskets and seals in appliances — the same appliances already under stress from mineral deposits. The combination of chlorine and calcium scale creates a particularly corrosive environment inside water heaters, reducing their lifespan even beyond what 12.3 GPG alone would cause. Phoenix residents often notice stronger chlorine taste and odor during summer months when treatment plants increase dosing to combat higher bacterial growth in warmer distribution pipes.

Chlorine also reacts with organic matter in the distribution system to form disinfection byproducts — trihalomethanes (THMs) and haloacetic acids (HAAs) — which are regulated contaminants. While Phoenix's levels typically stay below EPA limits, the taste and odor effects are amplified when chlorine bonds to calcium deposits in home plumbing. The SoftPro Elite HE water softener does not remove chlorine, so Phoenix residents dealing with taste and odor issues may benefit from an activated carbon whole-house filter paired with their softening system.

Fluoride in Phoenix Water

Phoenix intentionally adds fluoride to its water supply at approximately 0.7 mg/L, following CDC recommendations for dental health. This fluoride addition is carefully controlled and monitored, with levels staying well below the EPA's maximum allowable concentration of 4.0 mg/L.

The interaction between fluoride and 12.3 GPG hardness is primarily aesthetic rather than functional. Fluoride doesn't contribute to scale buildup or appliance damage, but it does remain present in softened water because ion exchange resin targets calcium and magnesium specifically. Water softeners, including the SoftPro Elite HE, do not remove fluoride — this is important for Phoenix residents to understand if they have concerns about fluoride intake. For those who prefer to remove fluoride from drinking water, a reverse osmosis system at the kitchen tap addresses this need while allowing the whole-house softener to handle the hardness problem.

Arsenic in Phoenix Water

Arsenic occurs naturally in Phoenix's water supply due to geological conditions in the Colorado River watershed, typically measuring 2-8 parts per billion (ppb) — well below the EPA's maximum contaminant level of 10 ppb. This arsenic originates from volcanic rock and mineral deposits in the river's source regions, not from industrial contamination.

Arsenic's interaction with extremely hard water is subtle but important to understand. The high mineral content in 12.3 GPG water can interfere with some arsenic removal technologies, but arsenic doesn't contribute to scale buildup or interact chemically with calcium and magnesium. The SoftPro Elite HE does not remove arsenic — ion exchange resin designed for hardness minerals is not effective against arsenic compounds. Phoenix residents with concerns about arsenic should consider a certified reverse osmosis system for drinking water, while using the whole-house softener to address the 12.3 GPG hardness problem.

Iron in Phoenix Water

Iron appears sporadically in Phoenix water, typically as ferrous iron (dissolved and invisible) at 0.1-0.4 mg/L, though levels can spike during pipe maintenance or system disturbances. This iron originates primarily from the corrosion of iron pipes in the distribution system, rather than from natural sources.

The interaction between iron and 12.3 GPG hardness creates particularly stubborn staining problems. Iron bonds with calcium deposits to form orange-brown mineral crusts that are extremely difficult to remove from fixtures, toilets, and shower surfaces. When ferrous iron oxidizes in the presence of calcium scale, it forms ferric iron precipitates that embed in the mineral matrix, creating permanent discoloration.

Iron above 0.3 mg/L can foul water softener resin, reducing its effectiveness and requiring more frequent cleaning or replacement. For Phoenix residents experiencing iron staining, an iron removal pre-filter upstream of the SoftPro Elite HE protects the softening resin while addressing both the iron and hardness problems sequentially. The EPA's secondary standard for iron is 0.3 mg/L — not a health concern, but a threshold where taste, odor, and staining become noticeable.

4. Why Most Phoenix Homeowners Pick the Wrong Softener

Walking into any Phoenix home improvement store, you'll find water softeners marketed with generic capacity claims that completely ignore the reality of 12.3 GPG water. These purchasing mistakes cost Phoenix homeowners thousands in failed systems, salt waste, and continued hard water damage.

The first and most expensive mistake is buying on price alone. A 24,000-grain capacity softener that might work adequately in Tucson's 8 GPG water will fail completely in Phoenix's 12.3 GPG environment. The resin exhaustion happens 50% faster at extremely hard levels, meaning a system sized for "average" hard water will run out of capacity every 2-3 days instead of the intended 5-7 days. Phoenix residents who choose undersized systems often assume their softener is defective when they continue experiencing scale buildup — but the problem is mathematical, not mechanical.

The second critical mistake is confusing water softeners with comprehensive water treatment. Softeners use ion exchange resin to remove calcium and magnesium — period. They do not reliably remove chlorine, fluoride, arsenic, or iron. Phoenix residents dealing with both 12.3 GPG hardness and taste/odor issues from chlorine need a two-stage approach: softening for hardness, plus carbon filtration for chlorine. Expecting one system to solve all water problems leads to disappointment and continued contamination.

The third mistake is ignoring the grain capacity mathematics entirely. Here's the formula every Phoenix resident should understand: [Household members] × 75 gallons/day × 12.3 GPG = daily grain demand. For a 4-person Phoenix household: 4 × 75 × 12.3 = 2,460 grains per day. Multiply by 7 days = 17,220 grains per week. Add a 20% buffer for high-usage periods = 20,664 grains weekly capacity needed. This math reveals why 24,000-grain systems fail in Phoenix — they're operating at maximum capacity with no safety margin.

The fourth mistake is overlooking salt efficiency ratings in a city where softeners regenerate frequently. At 12.3 GPG, a Phoenix water softener regenerates every 5-6 days instead of the 10-14 days typical in moderately hard water cities. An inefficient softener might use 8-12 pounds of salt per regeneration cycle, while a high-efficiency unit uses 6-8 pounds for the same capacity restoration. Over 10 years in Phoenix, this difference compounds to 3,000-4,000 pounds of extra salt — representing $600-800 in unnecessary costs, plus the environmental impact of excess sodium discharge.

5. What to Do Next: Test Your Phoenix Water

Before investing in any water treatment system, confirm your home's actual hardness level and identify any secondary contaminants. While Phoenix's municipal average is 12.3 GPG, individual neighborhoods can vary between 10.5-14.2 GPG depending on the blend of Salt River Project and Central Arizona Project water sources.

Purchase a comprehensive water test kit that measures hardness, iron, pH, and total dissolved solids. Test your water during different seasons — summer months often show higher mineral concentrations due to increased evaporation in the source reservoirs. Document the results with photos and keep the data for warranty registration and system sizing.

Contact three local plumbers for installation quotes, ensuring each understands Phoenix's extremely hard water conditions. Ask specifically about drain line requirements for regeneration discharge and whether your home's water pressure (typically 50-70 PSI in Phoenix) suits whole-house softening systems.

6. Homeowner Checklist: Phoenix Hard Water Damage Assessment

Walk through your Phoenix home and document existing hard water damage to understand the urgency of your softener investment. This assessment also provides baseline documentation for insurance or warranty claims.

Check your water heater's age and efficiency. If it's more than 3 years old and hasn't been maintained, expect 25-35% efficiency loss from scale buildup at 12.3 GPG. Look for mineral deposits around the temperature relief valve and listen for popping or crackling sounds during heating cycles — signs of scale interference.

Examine your showerheads and faucet aerators. White, chalky buildup that requires monthly cleaning indicates active mineral deposition throughout your plumbing system. Remove and photograph heavily scaled aerators as documentation of your home's hardness impact.

Inspect appliances systematically: dishwasher interior for white film, washing machine for mineral deposits in the detergent dispenser, and coffee maker for internal scaling. Calculate the replacement cost of these appliances if they fail prematurely due to continued 12.3 GPG exposure.

7. The SoftPro Elite HE: Built for Phoenix's Extreme Water

After evaluating Phoenix's water hardness of 12.3 GPG and the presence of chlorine, fluoride, arsenic, and iron in the local supply, one system consistently rises to the top for Phoenix homeowners: the SoftPro Elite HE Water Softener. This isn't marketing preference — it's mathematical necessity based on Phoenix's extreme water conditions.

The SoftPro Elite HE uses salt-based ion exchange technology, which is the only method capable of actually removing hardness minerals at 12.3 GPG levels. Salt-free systems marketed as "water conditioners" do not remove calcium and magnesium — they only attempt to change crystal structure. At Phoenix's extreme hardness levels, crystal modification is insufficient to prevent scale buildup. True ion exchange physically replaces calcium and magnesium ions with sodium ions, delivering genuinely soft water that measures under 1 GPG post-treatment.

The system's demand-initiated regeneration (DIR) technology is operationally essential for Phoenix conditions, not just convenient. At 12.3 GPG, resin becomes exhausted much faster than in moderate hardness environments. DIR monitors actual water usage and mineral removal, regenerating only when the resin bed is truly depleted. This prevents hard water breakthrough (under-regeneration) and eliminates salt and water waste from premature cycling (over-regeneration). For Phoenix households where softener regeneration occurs every 5-6 days, precise timing is critical.

The NSF/ANSI Standard 44 certified resin provides Phoenix residents with verified performance and materials safety. Given that Phoenix water already contains chlorine, fluoride, arsenic, and iron, ensuring the softening process itself doesn't introduce additional contaminants is crucial. The certification verifies that resin materials meet strict standards for both performance and leachable substances.

Grain capacity options (32K, 48K, 64K, 80K) allow proper sizing for Phoenix's extreme conditions. For a typical 4-person Phoenix household consuming 300 gallons daily at 12.3 GPG, the recommended capacity is 48,000 grains. Here's the sizing math: 4 people × 75 gallons × 12.3 GPG = 2,460 grains daily demand. Weekly demand: 17,220 grains. With a 20% buffer: 20,664 grains needed. The 48K system provides adequate capacity with proper safety margin for Phoenix's extreme hardness.

The 10-year warranty is particularly valuable for Phoenix installations because 12.3 GPG water subjects softening resin to heavy daily stress. While resin in soft-water cities might last 15-20 years, Phoenix's extreme conditions typically require resin replacement every 8-12 years. The warranty coverage spans the period of highest stress and potential failure.

For Phoenix residents dealing with iron staining, the SoftPro Elite HE is designed to work downstream of iron-specific pre-filtration systems. This compatibility prevents iron fouling of the softening resin while addressing both iron removal and hardness reduction sequentially. The system's bypass valve allows iron filter backwashing without disrupting softened water supply to the home.

For Phoenix households dealing with 12.3 GPG of water hardness and the compounding presence of chlorine, fluoride, arsenic, and iron, the SoftPro Elite HE is not a comfort upgrade — it is infrastructure protection for your home.

8. Recommended Setup for Phoenix Homes

The optimal Phoenix water treatment configuration addresses both the 12.3 GPG hardness and the secondary contaminants through strategic system placement. This setup maximizes performance while minimizing maintenance requirements.

Install the SoftPro Elite HE as the primary whole-house system, positioned after the main water shutoff valve but before the water heater. For homes with iron staining issues, add an iron removal filter upstream of the softener to prevent resin fouling. For chlorine taste and odor concerns, consider a whole-house carbon filter downstream of the softener.

For drinking water concerns about fluoride or arsenic, install a point-of-use reverse osmosis system at the kitchen sink. This three-stage approach — iron removal (if needed), whole-house softening, and point-of-use RO — addresses every contaminant in Phoenix's water profile without system conflicts or redundancy.

9. How to Size Your Softener for Phoenix

Sizing a water softener for Phoenix's 12.3 GPG requires precise calculation because undersizing leads to immediate system failure. Follow this step-by-step formula to determine your household's exact grain capacity needs.

Step 1: Count household members (include guests and extended stays)
Step 2: Multiply by 75 gallons per person per day (Phoenix average with desert landscaping)
Step 3: Multiply household gallons × 12.3 GPG = daily grain demand
Step 4: Multiply daily grains × 7 = weekly grain demand
Step 5: Add 20% buffer for high-usage days and system longevity
Step 6: Match result to SoftPro Elite HE capacity tier (32K/48K/64K/80K)

Example calculation for a 4-person Phoenix household:
4 people × 75 gallons = 300 gallons daily
300 gallons × 12.3 GPG = 3,690 grains daily
3,690 grains × 7 days = 25,830 grains weekly
25,830 + 20% buffer = 31,000 grains needed
Recommendation: 48,000-grain capacity SoftPro Elite HE

This sizing ensures regeneration every 5-7 days, which is optimal for salt efficiency and resin longevity in Phoenix's extreme hardness environment. Regenerating more frequently wastes salt and water; regenerating less frequently risks hard water breakthrough during peak usage periods.

10. Installation in Phoenix: What to Know

Phoenix requires a licensed plumber for water softener installation in most residential applications, particularly when connecting to the main water line. The city's plumbing code mandates proper cross-connection prevention and backflow protection for regenerating water treatment systems.

Optimal placement is after your main shutoff valve and pressure regulator, but before the water heater and any branch lines. This configuration ensures all household water is softened while protecting the system from thermal expansion and pressure spikes. Phoenix homes typically maintain 55-65 PSI water pressure, which is ideal for the SoftPro Elite HE's operating requirements.

The regeneration drain line must discharge to a suitable drain — laundry sink, floor drain, or outside area that can handle 40-60 gallons of brine discharge every 5-6 days. Phoenix's caliche soil doesn't absorb drain water well, so avoid discharging directly onto landscaping or near building foundations.

For Phoenix's 12.3 GPG conditions, use evaporated salt pellets exclusively — highest purity, lowest brine tank residue, and optimal performance in high-regeneration-frequency applications. Solar salt crystals contain impurities that accumulate faster when regenerating twice weekly, leading to more frequent brine tank cleaning requirements.

Check salt levels monthly during your first year of operation to establish consumption patterns specific to your household's usage at 12.3 GPG. Most Phoenix households consume 40-60 pounds of salt monthly depending on actual water usage and regeneration frequency.

11. 30-Day Action Plan for Phoenix Homeowners

Implementing water softening in Phoenix requires systematic planning to ensure proper installation and immediate results. This timeline addresses permitting, installation, and performance verification.

Days 1-7: Test current water hardness, document existing appliance damage with photos, and gather installation quotes from three licensed Phoenix plumbers experienced with extremely hard water conditions.

Days 8-14: Order the appropriately sized SoftPro Elite HE system, schedule installation, and arrange any necessary permits. Purchase initial salt supply (evaporated pellets) and any pre-filtration systems for iron if needed.

Days 15-21: Complete installation and system commissioning. Verify proper regeneration cycles and test post-softener water hardness to confirm under 1 GPG output.

Days 22-30: Monitor salt consumption, adjust regeneration timing if necessary, and retest water hardness to establish baseline system performance. Document the improvement in soap lather, appliance performance, and skin/hair feel as confirmation of successful hardness removal.

12. Maintenance Schedule for Phoenix Homeowners

Phoenix's 12.3 GPG water requires more frequent softener maintenance than moderate hardness environments. This schedule prevents system failures and maintains peak performance in extremely hard water conditions.

Monthly maintenance at 12.3 GPG: Check salt level in brine tank — consumption is high due to frequent regeneration cycles. Inspect for salt bridges (crystallized crust above water line) that block proper brine formation. Verify bypass valve remains in service position and hasn't been accidentally switched during plumbing work.

Every 3 months: Clean brine tank interior to remove accumulated sediment and impurities. Test post-softener water hardness with test strips — should read under 1 GPG consistently. If your Phoenix home has iron issues, inspect and clean the sediment pre-filter.

Annual maintenance requirements: Complete brine tank cleaning and disinfection. Conduct resin bed performance assessment — if post-softener hardness creeps above 1 GPG, resin may need iron cleaning or replacement. For Phoenix installations with iron pre-filters, check resin for orange iron fouling and use iron removal resin cleaner if needed. Audit regeneration cycle timing and salt dosage to ensure optimal efficiency.

Every 5 years, evaluate resin replacement needs. At 12.3 GPG, softening resin degrades faster than in moderate hardness cities. Phoenix residents should expect resin replacement every 8-10 years versus 12-15 years in softer water environments. Order a professional water test to establish current system performance and plan for any needed upgrades.

Pro tip for Phoenix residents: Keep a maintenance log noting salt consumption, regeneration frequency, and any performance changes. This data helps diagnose problems early and provides valuable information for warranty claims or system upgrades.

13. Is Phoenix's water at 12.3 GPG dangerous to drink?

Phoenix's 12.3 GPG water hardness is not a health hazard — calcium and magnesium are essential minerals that pose no drinking water risk. The EPA does not regulate water hardness as a health-related contaminant. However, the infrastructure damage and quality-of-life impacts at this extreme hardness level make treatment practically necessary for Phoenix homeowners.

14. Will a water softener remove chlorine, fluoride, arsenic, and iron from Phoenix water?

Water softeners remove only calcium and magnesium through ion exchange — they do not reliably remove chlorine, fluoride, or arsenic. For iron removal, softeners can handle trace amounts under 0.3 mg/L, but higher concentrations require dedicated iron filtration upstream of the softening system. Phoenix residents need companion systems for comprehensive contaminant removal: carbon filtration for chlorine, reverse osmosis for fluoride and arsenic.

15. How much salt will I use per month in Phoenix at 12.3 GPG?

Phoenix households typically consume 45-65 pounds of salt monthly due to frequent regeneration cycles required by 12.3 GPG water. A 4-person household with a properly sized 48K system regenerating every 6 days uses approximately 8 pounds of salt per cycle. Monthly consumption: 8 pounds × 5 cycles = 40 pounds, plus buffer for high-usage periods. Annual salt cost ranges from $120-180 depending on salt type and local pricing.

16. Does Phoenix require a permit to install a water softener?

Phoenix typically requires a plumbing permit for water softener installation when connecting to the main water line or modifying existing plumbing. Most installations require a licensed plumber due to cross-connection control requirements and backflow prevention mandates. Contact Phoenix Development Services Department for specific permit requirements based on your installation scope and property type.

17. Why does soft water feel slippery in the shower after installing a Phoenix softener?

The slippery sensation occurs because your skin is actually clean for the first time without calcium deposits blocking natural oils. At 12.3 GPG, Phoenix's hard water leaves a mineral film on skin that creates a false "squeaky clean" feeling. Softened water allows soap to rinse completely, leaving skin naturally smooth rather than coated with calcium residue. Most Phoenix residents adjust to this sensation within 2-3 weeks and report improved skin hydration and reduced irritation.

Final Verdict for Phoenix

Phoenix's extreme water hardness of 12.3 GPG demands commercial-grade treatment capable of handling nearly double the mineral load of typical "hard water" cities. The presence of chlorine, fluoride, arsenic, and iron compounds the hardness problem in specific ways that require strategic treatment planning beyond simple softening.

The SoftPro Elite HE emerges as the optimal choice for Phoenix households because its demand-initiated regeneration prevents hard water breakthrough during the frequent regeneration cycles that 12.3 GPG demands, its NSF-certified resin provides verified performance under extreme mineral stress, and its capacity options allow proper sizing for Phoenix's unique conditions rather than generic "average" hardness assumptions.

For Phoenix residents, water softening isn't a luxury upgrade — it's essential infrastructure protection. The $2,200 annual "extremely hard water tax" from appliance damage, energy losses, and soap waste far exceeds the investment in proper treatment. Check current SoftPro Elite HE pricing and available grain capacities for a Phoenix household, and remember that undersizing a system for 12.3 GPG water is more expensive than buying adequate capacity initially.

Living in the Valley of the Sun means accepting extreme summer heat — but it doesn't mean accepting the extreme infrastructure damage that Phoenix's 12.3 GPG water inflicts on every home from Camelback Mountain to South Mountain.