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

Written by Craig "The Water Guy" Phillips

1. The Hard Water Crisis Damaging Mesa Homes Right Now

Every month you delay installing a water softener in Mesa costs your household an estimated $47 in hidden damage. While you're reading this, calcium and magnesium minerals are coating your water heater elements, narrowing your pipes, and shortening the lifespan of every water-using appliance in your home.

Mesa's municipal water supply delivers a staggering 12.8 grains per gallon (GPG) of hardness minerals directly to your faucets. To put this in perspective, 12.8 GPG means every gallon of Mesa water contains enough dissolved calcium and magnesium to leave behind 12.8 grains of rock-hard scale deposits when it evaporates or heats up.

At 12.8 GPG, Mesa's water is classified as "Extremely Hard" — the most severe category on the water hardness scale. This level of mineral concentration transforms your home's plumbing system into a calcium carbonate manufacturing plant, operating 24 hours a day, 365 days a year.

Mesa draws its water primarily from the Salt River Project and Colorado River sources, both of which pass through limestone and mineral-rich geological formations across Arizona and California. By the time this water reaches your Mesa home, it has dissolved substantial quantities of calcium carbonate and magnesium sulfate — the primary culprits behind scale buildup.

The financial stakes are real and measurable. A tankless water heater operating on 12.8 GPG water can lose 35-40% of its heating efficiency within 18 months. Your dishwasher's spray arms clog with calcium deposits, requiring expensive repairs or early replacement. Even your coffee maker becomes a casualty, with heating elements burning out from scale accumulation.

For Mesa homeowners, water hardness isn't just a minor inconvenience — it's a threat to your home's value and your family's monthly budget. The question isn't whether you need a water softener in Mesa; it's which system can handle 12.8 GPG without failing under the extreme mineral load.

2. What 12.8 GPG Does to Your Mesa Home

At 12.8 GPG, calcium carbonate forms thick, cement-like deposits inside your water heater tank within months, not years. Every time your water heater fires up, the dissolved calcium and magnesium minerals precipitate out of solution and bond directly to the heating elements and tank walls.

Mesa homeowners report water heater efficiency losses of 8-12% per year with untreated 12.8 GPG water. A 40-gallon electric water heater that should last 8-10 years typically fails after 5-6 years in Mesa homes without water softening. The scale acts as an insulating barrier, forcing heating elements to work harder and burn out faster.

Your home's pipes are simultaneously narrowing from the inside out. At 12.8 GPG, calcium carbonate crystallization occurs rapidly wherever water temperature changes or flow velocity decreases. Older copper pipes in Mesa homes built before 1990 show measurable diameter reduction within 3-5 years of exposure to this hardness level.

Galvanized steel pipes, still present in some Mesa neighborhoods, fare even worse. The rough interior surface provides nucleation sites for calcium deposits, creating concentric rings that reduce water flow and increase pressure on pipe joints. Mesa plumbers report significantly higher repiping calls in areas with the hardest water.

Appliance manufacturers are taking notice of Mesa's water conditions. Several tankless water heater brands now void their warranties if the units are installed without a water softener in areas exceeding 7 GPG. At 12.8 GPG, you're nearly doubling that threshold.

The soap and detergent waste in Mesa homes is substantial and measurable. At 12.8 GPG, calcium and magnesium ions chemically react with soap to form insoluble precipitates — the grey scum that clings to your shower walls. Instead of creating lather and cleaning, your soap literally turns into mineral deposits.

Mesa families typically use 3-4 times more laundry detergent, dish soap, and shampoo compared to households with soft water. The annual extra cost for a family of four ranges from $180-$240, money that's essentially being wasted on soap that can't perform its intended function.

Your skin and hair bear the brunt of Mesa's mineral-heavy water. Calcium ions strip natural oils from skin, leaving a tight, dry feeling after every shower. Hair becomes dull and brittle as magnesium ions coat the hair shafts, preventing moisture absorption. Children with eczema or sensitive skin often see noticeable improvement within weeks of installing a water softener.

Laundry suffers visible damage from 12.8 GPG water. White fabrics develop a grey, dingy appearance that no amount of bleach can reverse. Cotton towels become stiff and scratchy as mineral deposits accumulate in the fibers. Clothing wears out 25-30% faster when washed in extremely hard water.

The annual "hard water tax" for a Mesa household at 12.8 GPG totals approximately $565 per year. This includes increased energy costs ($180), excess soap and detergent ($220), accelerated appliance replacement ($125), and additional plumbing maintenance ($40). Over a 10-year period, that's $5,650 in preventable costs.

3. Mesa's Iron, Chlorine, and Sediment Problems

Beyond the 12.8 GPG hardness baseline, Mesa residents are also contending with iron, chlorine, and sediment — each of which interacts with water hardness in its own way. Understanding these compound effects is crucial for choosing the right treatment approach for your Mesa home.

Iron Contamination in Mesa Water

Iron enters Mesa's water supply through natural geological processes as Colorado River and Salt River water passes through iron-rich rock formations. The iron typically presents as ferrous iron — dissolved, invisible, and tasteless until it contacts oxygen and oxidizes into the familiar reddish-brown ferric iron.

At 12.8 GPG hardness, iron contamination becomes significantly more problematic. Iron ions bond with calcium carbonate deposits, creating compounded staining that's nearly impossible to remove from fixtures, appliances, and laundry. Mesa homeowners report orange and brown stains that resist conventional cleaning products.

The EPA's secondary maximum contaminant level for iron is 0.3 mg/L, primarily for aesthetic reasons. Mesa's iron levels typically fluctuate seasonally, often approaching this threshold during summer months when groundwater contribution increases.

A standard water softener like the SoftPro Elite HE can handle trace iron levels under 0.3 mg/L, but higher concentrations will foul the resin bed over time. For Mesa homes with iron staining issues, an iron pre-filter upstream of the softener is the most reliable solution.

Chlorine Treatment and Byproducts

Mesa adds chlorine to its water supply as a disinfectant, following EPA requirements for municipal water treatment. While chlorine effectively kills harmful bacteria and viruses, it creates its own set of problems for Mesa households.

Chlorine accelerates the corrosion of rubber seals, gaskets, and O-rings throughout your plumbing system. At 12.8 GPG, this degradation happens faster because scale deposits trap chlorine against metal and rubber surfaces, increasing contact time and concentration.

Mesa residents often notice stronger chlorine taste and odor during summer months when water treatment plants increase disinfection levels. Chlorine also reacts with organic matter to form trihalomethanes (THMs) and haloacetic acids (HAAs) — regulated disinfection byproducts that some studies have linked to long-term health concerns.

The SoftPro Elite HE water softener does not remove chlorine. Mesa homeowners concerned about taste, odor, or disinfection byproducts should consider pairing their softener with an activated carbon whole-house filter or point-of-use drinking water system.

Sediment and Turbidity Issues

Sediment in Mesa's water supply comes primarily from aging distribution pipes and occasional main breaks throughout the city's extensive water infrastructure. The particles range from fine silt to visible rust flakes, depending on your neighborhood's pipe age and condition.

At 12.8 GPG hardness, sediment becomes a compounding problem. Suspended particles provide nucleation sites for calcium carbonate precipitation, accelerating scale formation throughout your plumbing system. Sediment also damages and clogs water softener resin over time, reducing efficiency and shortening system lifespan.

Mesa's turbidity levels typically remain well below the EPA maximum contaminant level of 4.0 NTU, but even low-level sediment impacts appliance performance. Dishwashers, washing machines, and water heaters accumulate sediment in their internal components, leading to premature wear and maintenance issues.

The SoftPro Elite HE includes a self-cleaning sediment pre-filter designed to capture particulate before it reaches the resin tank. For Mesa's water conditions, this feature provides essential protection against the combination of sediment and extreme hardness.

4. Why Most Mesa Homeowners Pick the Wrong Softener

Walking into a big-box store in Mesa and buying the cheapest water softener on the shelf is a $2,000 mistake waiting to happen. Here's what I wish someone had told me before I started covering water treatment systems across Arizona.

Mistake 1: Buying on Price Alone

An undersized 24,000-grain softener that works fine in Flagstaff's 3 GPG water will fail a Mesa household in less than a week. At 12.8 GPG, resin exhaustion happens incredibly fast. The math is unforgiving: a family of four in Mesa generates approximately 3,840 grains of hardness demand per day. A 24K unit would need to regenerate every 6 days just to keep up — and that's with zero safety margin.

Mesa's extreme hardness demands commercial-grade capacity in a residential setting. Trying to save $500 on the initial purchase costs thousands in salt waste, frequent regenerations, and premature system failure.

Mistake 2: Confusing Softeners with Filters

Water softeners use ion exchange to remove calcium and magnesium — period. They do NOT reliably remove iron, chlorine, or sediment from Mesa's water supply. Mesa residents dealing with both 12.8 GPG hardness and these additional contaminants need a two-stage treatment approach.

I've seen Mesa homeowners spend months troubleshooting "softener problems" that were actually iron staining or chlorine taste issues. Understanding what your softener can and cannot do prevents frustration and sets realistic expectations.

Mistake 3: Ignoring Grain Capacity Math

Here's the formula every Mesa homeowner needs to know:

People × 75 gallons/day × 12.8 GPG = daily grain demand

For a 4-person Mesa household: 4 × 75 × 12.8 = 3,840 grains per day

Weekly demand: 3,840 × 7 = 26,880 grains

Add 20% buffer: 26,880 × 1.2 = 32,256 grains minimum capacity

This means a 32,000-grain system is the absolute minimum for a Mesa family of four, with 48,000 grains being the smart choice for reliability and efficiency.

Mistake 4: Overlooking Salt Efficiency

At 12.8 GPG, your water softener will regenerate 2-3 times more often than systems in moderate hardness areas. An inefficient unit that uses 12 pounds of salt per regeneration versus 6 pounds for a high-efficiency model creates a massive cost difference over time.

Mesa households with inefficient softeners report monthly salt costs of $35-$45. High-efficiency units like the SoftPro Elite HE typically cut this to $15-$20 monthly — a difference that compounds to hundreds of dollars annually.

What to Do Next:
Test your current water hardness with a TDS meter or test strips. Calculate your household's daily grain demand using the formula above. Measure your available installation space and locate your main water line. Document any existing water quality issues like staining, taste, or odor before shopping for solutions.

5. The SoftPro Elite HE: Built for Mesa's Water

After evaluating Mesa's water hardness of 12.8 GPG and the presence of iron, chlorine, and sediment in the local supply, one system consistently rises to the top for Mesa homeowners: the SoftPro Elite HE Water Softener.

This isn't marketing hyperbole — it's the logical conclusion after analyzing what Mesa's extreme water conditions demand from a residential softening system. Let me walk you through exactly why each feature matters for your Mesa home.

Salt-Based Ion Exchange Resin

Salt-free systems do not actually remove hardness minerals — they only attempt to change crystal structure through template-assisted crystallization. At 12.8 GPG, this approach is fundamentally inadequate. Mesa's mineral load is too heavy for salt-free systems to manage effectively.

The SoftPro Elite HE uses true cation exchange resin to physically replace calcium and magnesium ions with sodium ions. This is the only technology that delivers genuinely soft water at Mesa's extreme hardness level. When properly sized and maintained, ion exchange can reduce 12.8 GPG down to zero GPG consistently.

Demand-Initiated Regeneration (DIR)

At 12.8 GPG, resin exhausts faster than in moderate hardness cities like Phoenix or Tucson. DIR technology monitors actual water usage and resin capacity, regenerating only when the bed is genuinely depleted. This prevents two critical failures: hard water breakthrough (under-regeneration) and salt/water waste (over-regeneration).

For Mesa households, DIR isn't just convenient — it's operationally essential. Manual timer-based systems inevitably guess wrong about regeneration timing when dealing with extreme hardness loads, leading to either wasted salt or hard water breakthrough.

NSF/ANSI Standard 44 Certified Components

NSF certification verifies that the resin, control valve, and pressure tank meet rigorous performance and materials safety standards. For Mesa residents already managing iron, chlorine, and sediment alongside extreme hardness, knowing the softening process itself doesn't introduce additional contaminants is critical.

Uncertified systems often use lower-grade resins that break down under heavy mineral loads, releasing particles and degradation byproducts into your treated water. At 12.8 GPG usage rates, resin quality becomes a significant factor in long-term performance.

Multiple Grain Capacity Options

The SoftPro Elite HE is available in 32,000, 48,000, 64,000, and 80,000-grain configurations. For Mesa's 12.8 GPG conditions, most households need 48K or 64K capacity to achieve optimal regeneration frequency.

Using our earlier calculation for a 4-person Mesa household (32,256 grains weekly demand), the 48,000-grain model provides a comfortable buffer and regenerates approximately every 10 days. This frequency maximizes salt efficiency while ensuring consistent soft water delivery.

10-Year Comprehensive Warranty

At 12.8 GPG, resin beds and control valves experience heavy daily stress that would destroy cheaper systems within 2-3 years. SoftPro's 10-year warranty provides Mesa homeowners with protection during the period of highest hardness-related wear.

The warranty covers resin replacement, control valve repair, and pressure tank defects — the three components most likely to fail under extreme hardness conditions. For Mesa's water, this coverage is infrastructure insurance, not just product protection.

Compatible with Pre-Filtration Systems

The SoftPro Elite HE is designed to work downstream of iron, sediment, and chlorine pre-filters without voiding the warranty. For Mesa homes dealing with multiple water quality issues, this compatibility allows you to address iron staining and sediment protection before water reaches the softener resin.

Many softener manufacturers discourage or prohibit pre-filtration, leaving homeowners to choose between addressing hardness or other contaminants. SoftPro's system integration approach recognizes that Mesa's water often requires multi-stage treatment.

Self-Cleaning Sediment Pre-Filter

Before hardness minerals reach the resin tank, the SoftPro's integrated pre-filter captures rust particles, pipe scale, and other sediment common in Mesa's aging water infrastructure. This protection extends resin life and prevents the clogging issues that plague other softeners in high-sediment environments.

The self-cleaning mechanism backwashes captured particles to drain automatically, eliminating the maintenance headaches associated with cartridge-style pre-filters. For Mesa's combination of sediment and extreme hardness, this feature provides essential system protection.

For Mesa households dealing with 12.8 GPG of water hardness and the compounding presence of iron, chlorine, and sediment, the SoftPro Elite HE is not a comfort upgrade — it is infrastructure protection for your home.

Recommended Setup for Mesa:
48,000-grain SoftPro Elite HE for households of 3-4 people. 64,000-grain model for families of 5+ or homes with high water usage. Install after main shutoff valve, before water heater. Use evaporated salt pellets only. Consider iron pre-filter if staining persists after softener installation.

6. How to Size Your Softener for Mesa

Proper sizing is the difference between a softener that serves your Mesa home for 10+ years and one that fails within 18 months. Here's the step-by-step formula every Mesa homeowner needs to follow:

Step 1: Count household members
Step 2: Multiply by 75 gallons per person per day
Step 3: Multiply household gallons × 12.8 GPG = daily grain demand
Step 4: Multiply by 7 = weekly grain demand
Step 5: Add 20% buffer for high-usage days
Step 6: Match to SoftPro Elite HE grain tier

Example calculation for a 4-person Mesa household:
Step 1: 4 people
Step 2: 4 × 75 = 300 gallons per day
Step 3: 300 × 12.8 = 3,840 grains per day
Step 4: 3,840 × 7 = 26,880 grains per week
Step 5: 26,880 × 1.2 = 32,256 grains weekly capacity needed
Step 6: Choose 48,000-grain SoftPro Elite HE

The 48K model provides optimal regeneration every 8-10 days, maximizing salt efficiency while maintaining consistent soft water delivery. Regenerating every 5-7 days is the sweet spot for peak system performance and longevity.

For Mesa's extreme hardness, never undersize your system. A 32,000-grain unit serving a family of four would regenerate every 6-7 days with no buffer for guests, lawn watering, or seasonal usage increases. The 48,000-grain model provides the operational headroom Mesa's water conditions demand.

7. Installation Requirements in Mesa

Mesa does not require a licensed plumber for residential water softener installation, but the city does require proper permitting for any modifications to your main water line. Most homeowners can legally install a bypass-equipped softener themselves, though professional installation ensures proper setup and preserves warranty coverage.

Install the SoftPro Elite HE after your main shutoff valve but before your water heater. This placement treats all household water while allowing you to bypass the system if needed for maintenance. The unit requires a 120V electrical connection and a drain line capable of handling regeneration discharge.

Mesa's municipal water pressure typically ranges from 45-65 PSI, which falls within the SoftPro's optimal operating range of 25-80 PSI. No pressure modifications are usually needed, though homes in higher elevation areas of Mesa may benefit from a pressure booster if readings fall below 40 PSI.

The regeneration drain line must discharge to a suitable location — typically a floor drain, utility sink, or standpipe connected to your home's sewer system. Mesa's building codes prohibit discharge directly to soil or storm drains due to the salt content in backwash water.

Salt recommendation for Mesa's 12.8 GPG conditions: Use evaporated salt pellets exclusively. At extreme hardness levels, the highest purity salt minimizes brine tank residue and ensures complete dissolution during regeneration. Solar salt crystals and rock salt contain impurities that accumulate faster when regeneration frequency is high.

Check salt levels monthly during your first year of operation to establish usage patterns. At 12.8 GPG, expect to add 40-60 pounds of salt monthly for a family of four, depending on actual water consumption and regeneration frequency.

8. Maintenance Schedule for Mesa Homeowners

Mesa's 12.8 GPG water demands more frequent maintenance than moderate hardness areas, but the schedule is straightforward and manageable. Following this timeline prevents system failures and maximizes your investment's lifespan.

Monthly Tasks

Check salt level in the brine tank — consumption is high at Mesa's extreme hardness level. Look for a salt bridge, which appears as a hard crust above the water line that prevents new salt from dissolving. Break up salt bridges with a broom handle and add fresh evaporated pellets as needed.

Verify the bypass valve remains in the "service" position unless you're performing maintenance. Confirm the system is regenerating on schedule by checking the control display or listening for the regeneration cycle during its programmed time.

Every 3 Months

Clean the brine tank by removing undissolved salt and wiping down the interior surfaces. At 12.8 GPG regeneration frequency, sediment and salt residue accumulate faster than in moderate hardness installations.

Test post-softener water hardness with test strips to confirm output remains under 1 GPG. If hardness creeps above 1 GPG, investigate resin fouling, salt bridging, or control valve issues before they worsen.

Inspect and clean the sediment pre-filter if your Mesa water contains visible particles. The self-cleaning mechanism handles most sediment, but manual inspection ensures optimal flow rates.

Annual Deep Maintenance

Perform a complete brine tank cleaning, removing all salt and washing the tank interior with mild soap. Check the resin bed performance by testing hardness removal efficiency — if post-softener readings exceed 1 GPG consistently, the resin may need cleaning or replacement.

For Mesa homes with iron issues, inspect the resin for orange or brown fouling. Iron-fouled resin requires cleaning with a specialized resin cleaner to restore capacity and prevent permanent damage.

Audit the regeneration cycle timing and salt dosage. Mesa's seasonal water usage patterns may require adjustments to maintain optimal efficiency throughout the year.

Every 5 Years

Evaluate resin replacement needs by monitoring output quality and regeneration efficiency. At 12.8 GPG operating conditions, resin beds typically require replacement every 7-10 years, compared to 10-15 years in moderate hardness areas.

Signs of resin degradation include: consistently high post-softener hardness, increased salt consumption, shorter intervals between regenerations, and visible resin particles in treated water.

Pro tip for Mesa residents: Order a comprehensive water test kit before installation to establish baseline readings for hardness, iron, chlorine, and pH. Retest 30 days after installation to confirm the system is performing to specifications, then annually to track any changes in your water supply.

9. Is Mesa's 12.8 GPG Water Dangerous to Drink?

Mesa's 12.8 GPG water hardness is not dangerous to drink from a health perspective — in fact, calcium and magnesium are essential minerals that contribute to daily nutritional needs. The EPA does not regulate water hardness as a health concern, and many European countries have naturally hard water with no adverse health effects.

The dangers of Mesa's extremely hard water are entirely related to its effects on plumbing, appliances, and household systems. The mineral content that damages your water heater and clogs your pipes is harmless when consumed.

10. Will a Water Softener Remove Iron, Chlorine, and Sediment from Mesa Water?

A standard water softener like the SoftPro Elite HE removes water hardness minerals only — calcium and magnesium. Here's what it can and cannot do for Mesa's additional contaminants:

Iron: The softener can handle trace iron levels under 0.3 mg/L, but higher concentrations will foul the resin. For visible iron staining, install an iron pre-filter upstream of the softener.

Chlorine: Not removed by ion exchange resin. Add an activated carbon whole-house filter if chlorine taste and odor are concerns.

Sediment: The SoftPro's integrated pre-filter captures most particulate matter, protecting the resin bed while improving water clarity.

11. How Much Salt Will I Use Per Month in Mesa at 12.8 GPG?

A family of four in Mesa typically uses 40-60 pounds of salt monthly with a properly sized SoftPro Elite HE system. This calculation assumes 300 gallons daily usage and regeneration every 8-10 days.

At current Mesa salt prices ($6-8 per 40-pound bag), monthly salt costs range from $15-20 for high-efficiency systems. Older or undersized softeners can double this consumption due to frequent regenerations and inefficient salt dosing.

12. Does Mesa Require a Permit to Install a Water Softener?

Mesa requires a plumbing permit for water softener installation if the work involves modifications to your main water line or new electrical connections. Simple replacement installations on existing plumbing typically don't require permits, but check with Mesa's Building Safety Division to confirm your specific situation.

Professional installers handle permitting automatically. DIY installations may need permit applications submitted before work begins, especially for new construction or major plumbing changes.

13. Why Does Soft Water Feel Slippery in Mesa Showers?

The slippery feeling is actually your skin's natural oils and moisture being preserved instead of stripped away by calcium and magnesium minerals. After years of Mesa's 12.8 GPG water removing these natural oils, soft water initially feels strange because soap rinses completely clean instead of leaving mineral residue.

Most Mesa families adjust to the sensation within 1-2 weeks. The "squeaky clean" feeling you're accustomed to is actually soap scum and mineral deposits that soft water eliminates entirely.

14. How Quickly Will I See Results After Installing a Softener in Mesa?

With 12.8 GPG hardness, results are dramatic and immediate. You'll notice better soap lather and reduced water spots within hours of installation. Skin and hair improvements typically appear within 3-5 days as mineral buildup washes away.

Appliance protection begins immediately, but reversing existing scale damage takes months. Water heater efficiency improvements become measurable after 30-60 days as loose scale deposits flush from the system.

15. Can the SoftPro Elite HE Handle Mesa's Water Without Additional Filtration?

The SoftPro Elite HE can handle Mesa's 12.8 GPG hardness independently, but iron staining and chlorine taste may require supplemental treatment. The integrated sediment pre-filter addresses most particulate issues without additional equipment.

For comprehensive treatment of all Mesa water issues, consider pairing the softener with iron pre-filtration (if staining occurs) and carbon post-filtration (for chlorine taste/odor). The SoftPro is designed for multi-stage system integration when needed.

16. What's the Total Cost of Ownership for a Mesa Water Softener?

Over 10 years, a properly sized SoftPro Elite HE system costs approximately $2,400-2,800 in total ownership expenses for a Mesa household. This includes the initial system cost ($1,200-1,500), salt purchases ($1,800-2,400), electricity ($180-240), and maintenance supplies ($200-300).

Compare this to Mesa's annual hard water costs of $565, totaling $5,650 over the same period. The net savings exceed $2,850, plus immeasurable benefits in appliance longevity and household comfort.

17. Final Verdict for Mesa Homeowners

Mesa's extreme hardness of 12.8 GPG demands commercial-grade treatment in a residential package — compromise solutions simply cannot handle this mineral load long-term. The compounding presence of iron, chlorine, and sediment makes water treatment a necessity, not a luxury, for protecting your home's value and your family's daily comfort.

The SoftPro Elite HE rises above other residential softeners because its demand-initiated regeneration prevents the hard water breakthrough that destroys lesser systems under extreme hardness stress. The 10-year warranty provides confidence that the system can withstand Mesa's punishing water conditions throughout its designed lifespan.

For Mesa households, the math is straightforward: $2,800 in total softener costs over 10 years versus $5,650 in hard water damage and waste over the same period. The SoftPro Elite HE pays for itself within 3-4 years through energy savings, reduced soap waste, and appliance protection alone.

The 48,000-grain model handles most Mesa families efficiently, while the 64,000-grain option provides extra capacity for larger households or high water usage. Either configuration delivers the reliable performance Mesa's challenging water conditions demand.

Check current SoftPro Elite HE pricing and available grain capacities for Mesa households. Review system specifications and warranty coverage to confirm the model matches your home's water usage patterns and installation requirements.

Living in the shadow of the Superstition Mountains means accepting some of Arizona's toughest water challenges — but it doesn't mean accepting the damage that 12.8 GPG hardness inflicts on every home that doesn't fight back with proper treatment.