Is Anderson, IN Tap Water Safe to Drink?
Anderson tap water is legally compliant, but one contaminant exceeds health guidelines. Specifically: PFAS above EPA limits (PFOS: 4.1 ppt — limit is 4 ppt each). A point-of-use filter is recommended for drinking and cooking water. Anderson also has very hard water at 255 PPM.
Hardness Scale: Where Anderson Falls
0Slightly
60Moderate
120Hard
180Very Hard
250Extreme
400+
How Anderson Compares
Anderson's water is 85% harder than the national average of 138 PPM. It ranks #164 out of 1000 cities in our database (harder than 84% of US cities we track). Within Indiana, it ranks #9 of 17 cities (6% above the state average of 241 PPM). Among cities (50k-100k), Anderson ranks #51 of 258 for hardness. At this hardness level, water heaters run an estimated 47% less efficiently due to scale insulation, and major water-using appliances typically last 4 years less than the national average lifespan.
What Anderson's Water Means for Your Home
Hardness: 255 PPM - Treatment Recommended
Anderson has some extremely hard water. At 255 PPM (14.9 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 255 PPM increases household costs through scale-coated water heaters that use more energy, extra soap and detergent, and appliances that wear out faster. Most Anderson homeowners don't realize it until the plumber shows up. That's 6% harder than the Indiana average.
Contaminants & Safety
Forever chemicals (PFAS) are worth watching here. Anderson has PFOS at 4.1 ppt, exceeding the EPA's 2024 limit of 4 ppt per compound. PFAS are synthetic compounds that accumulate in your body over time. A certified carbon filter or reverse osmosis system with NSF P473 certification is the most effective protection. See the regulatory timeline.
What's in the Treatment Process
Anderson's surface water supply requires heavy chlorination to stay safe — but that creates a tradeoff. The treatment process generates disinfection byproducts: TTHMs at 29.4 ppb (37% of the legal limit, but 196x the EWG guideline) and HAA5 at 13.5 ppb (23% of the legal limit, but 135x 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. All measurements are within federal legal limits. The EWG guidelines represent a more conservative, health-based standard.
How Hard Water Affects Your Home
At 255 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) | 255 PPM | < 60 PPM | No federal limit | ⚠ Very Hard |
| Total Dissolved Solids | 410 PPM | < 300 PPM | 500 PPM | ⚠ Elevated |
| PFAS (total) | 4.1 ppt | — | No total limit | Detected |
| ↳ PFOA | 0 ppt | 0 ppt | 4 ppt (2024) | ✓ OK |
| ↳ PFOS | 4.1 ppt | 0 ppt | 4 ppt (2024) | ⚠ Exceeds |
| Lead | 1.4 ppb | 0 ppb (no safe level) | 15 ppb (10 ppb in 2027) | ✓ Low |
| Chlorine / Chloramine | 1.2 mg/L | Taste threshold ~1.0 | 4.0 mg/L | ✓ Normal |
| Nitrate | 0.154 mg/L | 5 mg/L | 10 mg/L | ✓ OK |
Recommendations for Anderson Homes
Our Top Picks for Anderson (255 PPM)
Hard water at 255 PPM causes scale buildup, increased energy use, and premature appliance failure. A softener protects your plumbing and appliances.
Recommended Filter for Anderson
PFAS exceed EPA limits (PFOS: 4.1 ppt — limit: 4 ppt each). A certified filter reduces these contaminants effectively.
Quick Fix for Chlorine: Shower Filter
At 1.2 mg/L chlorine, many Anderson 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 Anderson
With PFAS at 4.1 ppt in Anderson'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 Anderson Water's annual Consumer Confidence Report for official city-level data.
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About Anderson's Water Supply
Water Utility: City of Anderson Water
Water Source: Mounds Lake & wells (Surface Water)
Population Served: 58,942
Hardness: 255 PPM (14.9 grains per gallon)
Anderson's drinking water comes from surface sources — Mounds Lake & wells. 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 59,000 residents.
Water quality can vary by neighborhood and season. For your exact numbers, request City of Anderson 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 City of Anderson Water in Anderson, IN, including ZIP codes:
46001, 46011, 46012, 46013, 46014, 46015, 46016, 46017, 46018, 46036, 46044, 46048, 46051, 46056, 46063, 46064, 46070, 46115, 46117, 46148, 46155, 46173, 46186, 46928, 47337, 47344, 47351, 47356, 47384, 47385
If your ZIP code is listed above, this report covers your water supply. Water quality may vary slightly by neighborhood.
Water Softener Sizing for Anderson
At 255 PPM (14.9 GPG), here is how to size a softener for your Anderson home. Multiply hardness in GPG (14.9) by daily water usage (roughly 50 gallons per person). A family of four uses about 200 gallons/day: 14.9 GPG × 200 gal = 2980 grains/day. Over a 7-day regeneration cycle, that is 20,860 grains - a 32,000-grain softener is the right fit for most Anderson households.
Compare Anderson to Other Indiana Cities
Frequently Asked Questions About Anderson Water
Is Anderson tap water safe to drink?
Where does Anderson's water come from?
Do I need a water softener in Anderson?
How do I remove PFAS from Anderson tap water?
What water filter is best for Anderson?
Is Anderson water safe for babies and infants?
Does Anderson water damage tankless water heaters?
Do I need both a softener AND a filter in Anderson?
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 Anderson Homeowners Actually Buy
Prioritized for contaminant reduction for homes with 255 PPM water and PFAS above EPA limits.
Affiliate disclosure: we may earn a commission. Selection based on Anderson's water data.