Is Broken Arrow, OK Tap Water Safe to Drink?
Broken Arrow tap water is legally compliant, but one contaminant exceeds health guidelines. Specifically: PFAS above EPA limits (PFOS: 16.98 ppt — limit is 4 ppt each). A point-of-use filter is recommended for drinking and cooking water. Broken Arrow also has very hard water at 224 PPM.
Hardness Scale: Where Broken Arrow Falls
0Slightly
60Moderate
120Hard
180Very Hard
250Extreme
400+
How Broken Arrow Compares
Broken Arrow's water is 62% harder than the national average of 138 PPM. It ranks #256 out of 1000 cities in our database (harder than 74% of US cities we track). Within Oklahoma, it ranks #6 of 14 cities (3% above the state average of 217 PPM). Among mid-size cities (100k-200k), Broken Arrow ranks #55 of 189 for hardness. At this hardness level, water heaters run an estimated 41% less efficiently due to scale insulation, and major water-using appliances typically last 3 years less than the national average lifespan.
What Broken Arrow's Water Means for Your Home
Hardness: 224 PPM - Treatment Recommended
Broken Arrow has some seriously hard water. At 224 PPM (13.1 grains per gallon), your tap is loaded with mineral content carried in from the watershed geology. Here's the thing: it's perfectly safe to drink. The minerals won't hurt you. But they will hurt your wallet. That adds up. Hard water at 224 PPM increases household costs through scale-coated water heaters that use more energy, extra soap and detergent, and appliances that wear out faster. Most Broken Arrow homeowners don't realize it until the plumber shows up. That's 3% harder than the Oklahoma average.
Contaminants & Safety
Forever chemicals (PFAS) are a serious concern here. Broken Arrow has PFOS at 16.98 ppt — the EPA's 2024 limit is 4 ppt for PFOA and PFOS individually. PFAS don't break down in your body or the environment. Research links long-term exposure to increased cancer risk, thyroid issues, and immune system problems. The fix: a whole-house activated carbon filter or a point-of-use reverse osmosis system. Look for NSF P473 certification — that's the standard that specifically tests for PFAS removal.
What's in the Treatment Process
Broken Arrow's surface water supply requires heavy chlorination to stay safe — but that creates a tradeoff. The treatment process generates disinfection byproducts: TTHMs at 47.8 ppb (60% of the legal limit, but 319x the EWG guideline) and HAA5 at 25.6 ppb (43% of the legal limit, but 256x 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 0.121 ppb, which is 6.1x 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 224 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) | 224 PPM | < 60 PPM | No federal limit | ⚠ Very Hard |
| Total Dissolved Solids | 227 PPM | < 300 PPM | 500 PPM | ✓ OK |
| PFAS (total) | 53.73 ppt | — | No total limit | Detected |
| ↳ PFOA | 0 ppt | 0 ppt | 4 ppt (2024) | ✓ OK |
| ↳ PFOS | 16.98 ppt | 0 ppt | 4 ppt (2024) | ⚠ Exceeds |
| Lead | 2 ppb | 0 ppb (no safe level) | 15 ppb (10 ppb in 2027) | ✓ Low |
| Chlorine / Chloramine | 0.8 mg/L | Taste threshold ~1.0 | 4.0 mg/L | ✓ Normal |
| Nitrate | 0.0633 mg/L | 5 mg/L | 10 mg/L | ✓ OK |
Recommendations for Broken Arrow Homes
Our Top Picks for Broken Arrow (224 PPM)
Hard water at 224 PPM causes scale buildup, increased energy use, and premature appliance failure. A softener protects your plumbing and appliances.
Recommended Filter for Broken Arrow
PFAS exceed EPA limits (PFOS: 16.98 ppt — limit: 4 ppt each). A certified filter reduces these contaminants effectively.
How to Test Your Water in Broken Arrow
With PFAS at 53.73 ppt in Broken Arrow's supply, confirming your home's specific levels is especially important. PFAS vary by neighborhood and can concentrate differently depending on your position in the distribution system.
Free option: Request City of Broken Arrow's annual Consumer Confidence Report for official city-level data.
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About Broken Arrow's Water Supply
Water Utility: City of Broken Arrow
Water Source: Tulsa Water (Spavinaw Creek system) (Surface Water)
Population Served: 116,330
Hardness: 224 PPM (13.1 grains per gallon)
Broken Arrow's drinking water comes from surface sources — Tulsa Water (Spavinaw Creek system). 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 116,000 residents.
Water quality can vary by neighborhood and season. For your exact numbers, request City of Broken Arrow'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 City of Broken Arrow in Broken Arrow, OK, including ZIP codes:
74008, 74011, 74012, 74013, 74014, 74043, 74421, 74429, 74447, 74456, 74477, 74829, 74833, 74859
If your ZIP code is listed above, this report covers your water supply. Water quality may vary slightly by neighborhood.
Water Softener Sizing for Broken Arrow
At 224 PPM (13.1 GPG), here is how to size a softener for your Broken Arrow home. Multiply hardness in GPG (13.1) by daily water usage (roughly 50 gallons per person). A family of four uses about 200 gallons/day: 13.1 GPG × 200 gal = 2620 grains/day. Over a 7-day regeneration cycle, that is 18,340 grains - a 32,000-grain softener is the right fit for most Broken Arrow households.
Compare Broken Arrow to Other Oklahoma Cities
Frequently Asked Questions About Broken Arrow Water
Is Broken Arrow tap water safe to drink?
Where does Broken Arrow's water come from?
Do I need a water softener in Broken Arrow?
How do I remove PFAS from Broken Arrow tap water?
What water filter is best for Broken Arrow?
Is Broken Arrow water safe for babies and infants?
Does Broken Arrow water damage tankless water heaters?
Do I need both a softener AND a filter in Broken Arrow?
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 Broken Arrow Homeowners Actually Buy
Prioritized for contaminant reduction for homes with 224 PPM water and PFAS above EPA limits.
Affiliate disclosure: we may earn a commission. Selection based on Broken Arrow's water data.