Is Aurora East, CO Tap Water Safe to Drink?
Yes, Aurora East tap water is safe to drink. No contaminants exceed health guidelines. However, Aurora East has hard water at 120 PPM, which will cause scale buildup in plumbing and appliances over time. A softener or conditioner is worth considering.
Hardness Scale: Where Aurora East Falls
0Slightly
60Moderate
120Hard
180Very Hard
250Extreme
400+
How Aurora East Compares
Aurora East's water is close to the national average of 138 PPM, ranking #532 out of 1000 cities tracked. Within Colorado, it ranks #6 of 23 cities (21% above the state average of 99 PPM). Among major US cities (500k+), Aurora East ranks #59 of 100 for hardness. At this hardness level, water heaters run an estimated 22% less efficiently due to scale insulation, and major water-using appliances typically last 2 years less than the national average lifespan.
What Aurora East's Water Means for Your Home
Hardness: 120 PPM - Treatment Recommended
Aurora East's water is hard at 120 PPM (7 GPG). That's enough to notice every day: gradual scale on fixtures, spots on dishes, soap that doesn't lather the way it should. That's 21% harder than the Colorado average. Homeowners who install a water softener or salt-free conditioner notice the difference fast: better lathering, cleaner dishes, and appliances that last longer. That adds up. Hard water at 120 PPM increases household costs through scale-coated water heaters that use more energy, extra soap and detergent, and appliances that wear out faster. Most Aurora East homeowners don't realize it until the plumber shows up.
Contaminants & Safety
Disinfection byproducts are the notable finding here. Aurora East's water has TTHMs at 23.3 ppb and HAA5 at 16.1 ppb — both within legal limits, but the EWG health guidelines are far stricter. These byproducts form when chlorine reacts with organic matter during treatment. A whole-house activated carbon filter reduces both chlorine and its byproducts. Want the full picture? Request your utility's annual Consumer Confidence Report.
What's in the Treatment Process
Aurora East's surface water supply requires heavy chlorination to stay safe — but that creates a tradeoff. The treatment process generates disinfection byproducts: TTHMs at 23.3 ppb (29% of the legal limit, but 155x the EWG guideline) and HAA5 at 16.1 ppb (27% of the legal limit, but 161x the EWG guideline). These are within legal limits, but the EWG sets much tighter thresholds based on cancer-risk research. A whole-house activated carbon filter reduces both chlorine and byproducts.
Chromium-6 was detected at 0.363 ppb, which is 18x the EWG health guideline. There's no separate federal limit for chromium-6, only total chromium. A reverse osmosis system is the most effective removal method. All measurements are within federal legal limits. The EWG guidelines represent a more conservative, health-based standard.
How Hard Water Affects Your Home
At 120 PPM, untreated hard water has measurable effects on household costs and appliance life:
- Water heater inefficiency: Scale insulation forces the heater to work harder (DOE estimates up to 22% more energy for heavily scaled units)
- Soap and detergent: Hard water reduces lathering, requiring significantly more product
- Appliance replacement: Water heaters, dishwashers, and washing machines fail 2-4 years earlier due to scale buildup
- Plumbing maintenance: Scale buildup in pipes reduces flow and requires more frequent service
Note: Impact varies by household size, water usage, and local energy costs. A home water test provides the most accurate assessment for your specific situation.
| Contaminant | Detected | Health Guideline | Legal Limit | Status |
|---|---|---|---|---|
| Hardness (as CaCO₃) | 120 PPM | < 60 PPM | No federal limit | ✓ OK |
| Total Dissolved Solids | 200 PPM | < 300 PPM | 500 PPM | ✓ OK |
| PFAS (total) | 23.9 ppt | — | No total limit | Detected |
| ↳ PFOA | 0 ppt | 0 ppt | 4 ppt (2024) | ✓ OK |
| ↳ PFOS | 0 ppt | 0 ppt | 4 ppt (2024) | ✓ OK |
| Lead | 2.5 ppb | 0 ppb (no safe level) | 15 ppb (10 ppb in 2027) | ✓ Low |
| Chlorine / Chloramine | 1.3 mg/L | Taste threshold ~1.0 | 4.0 mg/L | ✓ Normal |
| Nitrate | 0.3 mg/L | 5 mg/L | 10 mg/L | ✓ OK |
Our Top Picks for Aurora East (120 PPM)
Hard water at 120 PPM causes scale buildup, increased energy use, and premature appliance failure. A softener protects your plumbing and appliances.
Quick Fix for Chlorine: Shower Filter
At 1.3 mg/L chlorine, many Aurora East residents notice dry skin, brittle hair, and that "pool smell" in the shower. A shower filter installs in 5 minutes, no tools needed.
How to Test Your Water in Aurora East
With 120 PPM hardness, a quick test strip confirms whether your specific tap matches Aurora East's average before you invest in a softener. Hardness can vary within the same system.
Free option: Request Aurora Water's annual Consumer Confidence Report for official city-level data.
📊 Already Tested Your Water?
City averages miss neighborhood-level variation. Share your results to help your neighbors get better data.
We review every submission before publishing. Your ZIP is shown; your identity is not.
About Aurora East's Water Supply
Water Utility: Aurora Water
Water Source: South Platte River + Prairie Waters (Surface Water)
Population Served: 533,407
Hardness: 120 PPM (7 grains per gallon)
Aurora East's drinking water comes from surface sources — South Platte River + Prairie Waters. Surface water requires more extensive treatment than groundwater, including coagulation, filtration, and disinfection. This heavier chlorination is why disinfection byproducts tend to be higher in surface-supplied systems. Despite the treatment process, mineral hardness from the watershed carries through. The system serves 533,000 residents.
Water quality can vary by neighborhood and season. For your exact numbers, request Aurora Water's Consumer Confidence Report (CCR) or test your own tap.
ZIP Codes Covered by This Report
This water quality data applies to all areas served by Aurora Water in Aurora East, CO, including ZIP codes:
80101, 80102, 80103, 80105, 80136, 80137, 80801, 80804, 80812, 80815, 80818, 80822, 80824, 80834, 80836, 80861
If your ZIP code is listed above, this report covers your water supply. Water quality may vary slightly by neighborhood.
Water Softener Sizing for Aurora East
At 120 PPM (7 GPG), here is how to size a softener for your Aurora East home. Multiply hardness in GPG (7) by daily water usage (roughly 50 gallons per person). A family of four uses about 200 gallons/day: 7 GPG × 200 gal = 1400 grains/day. Over a 7-day regeneration cycle, that is 9,800 grains - a 32,000-grain softener is the right fit for most Aurora East households.
Compare Aurora East to Other Colorado Cities
Frequently Asked Questions About Aurora East Water
Is Aurora East tap water safe to drink?
Where does Aurora East's water come from?
Do I need a water softener in Aurora East?
Does Aurora East water damage tankless water heaters?
How much does hard water cost a Aurora East household per year?
What is the hardness of Aurora East water in grains per gallon?
What size water softener do I need for Aurora East?
Salt-based softener or salt-free conditioner for Aurora East?
Data sources: Lead and copper data from EPA Safe Drinking Water Act LCR reporting. Contaminant data from utility-reported testing results. PFAS data from EPA UCMR5 (2023–2025). Hardness from USGS and municipal reports. Data reflects system-level testing results and may not match your specific tap due to neighborhood plumbing, season, or recent utility changes. For your utility's latest results, request their Consumer Confidence Report (CCR). Our methodology. Last updated: 2026-02-24.
What Aurora East Homeowners Actually Buy
Common purchases for homes with 120 PPM water.
Affiliate disclosure: we may earn a commission. Selection based on Aurora East's water data.