Orange County uses chloramine — a tough chlorine-ammonia mix — to disinfect tap water. It does the job, but it’s notoriously hard to filter out of your drinking, cooking, and bath water.
Before you buy a filtration system, here’s what actually removes it (and what’s a waste of money).
Why Does Orange Use Chortamines?
Chloramine lasts longer in pipes and produces fewer byproducts than chlorine.
- It lasts longer in pipes than chlorine
- It creates fewer harmful byproducts
- It reduces taste and odor complaints (compared to straight chlorine)
The downside for homeowners:
- It’s harder to remove than chlorine
- It can irritate sensitive skin
- It affects the taste of drinking water and coffee
- It’s toxic to fish and aquarium life
Standard chlorine filters often can’t handle it.
1. Catalytic Carbon Filters
Catalytic carbon is the gold standard for chloramine removal.
Regular activated carbon struggles with chloramine because the ammonia component resists standard filtration. Catalytic carbon is treated to accelerate the chemical reaction that breaks down chloramine.
What to know:
- Highly effective at removing chloramine
- Works in whole-house systems and under-sink units
- Lasts longer than standard carbon for this job
Look for “catalytic carbon” or “chloramine reduction” on the label. A filter labeled “activated carbon” may not cut it.
2. Whole-House (Point-of-Entry) Systems
A whole-house system treats water as it enters your home, so every tap and shower gets filtered water.
For chloramine, pair a whole-house system with a large catalytic carbon tank. This gives water sufficient contact time with the media to break down chloramine.
What to know:
- Removes chloramine from drinking, cooking, and bathing water
- Ideal if skin irritation is your main concern
- Has a higher upfront cost, but covers the whole home
A larger tank does a better job than a small inline unit.
3. Reverse Osmosis (RO) Systems — With a Catch
Reverse osmosis pushes water through a fine membrane to strip out contaminants. On its own, an RO membrane doesn’t remove much chloramine.
However, most RO systems include a carbon pre-filter. If that pre-filter uses catalytic carbon, the system handles chloramine well.
What to know:
- Effective only when paired with a quality carbon stage
- Excellent for drinking and cooking water
- Produces some wastewater during filtration
Check the pre-filter type before buying. The membrane alone won’t solve a chloramine problem, and chloramine can damage some membranes over time.
4. Under-Sink Catalytic Carbon Filters
An under-sink unit is a practical middle ground. It targets the water you drink and cook with, without the cost of a whole-house system.
Choose one built with catalytic carbon and enough capacity for your household.
What to know:
- Affordable and DIY-friendly to install
- Targets kitchen tap water
- Won’t help with shower or bathing water
Most under-sink units can be installed in an afternoon with basic tools. Just shut off the cold water line first.
5. Standard Activated Carbon Filters (Limited Help)
This is where many homeowners go wrong. Basic activated carbon — found in most pitcher filters and cheap faucet attachments — is designed for chlorine, not chloramine.
What to know:
- Minimal chloramine removal
- Fine for basic chlorine taste and odor
- Not a reliable fix for chloramine
If your pitcher filter says “reduces chlorine taste and odor,” assume it does little for chloramine.
6. Vitamin C (Ascorbic Acid) Filters
Vitamin C neutralizes chloramine through a chemical reaction. You’ll most often see these in shower filters and bath dechlorinators.
What to know:
- Effective for shower and bath water
- Popular for sensitive skin and hair
- Filter media needs regular replacement
These are a low-cost way to protect your skin in the shower without installing a whole-house system.
Quick Comparison
| Filter Type | Removes Chloramine? | Best For |
|---|---|---|
| Catalytic carbon | Yes | Whole-home or kitchen |
| Whole-house + catalytic carbon | Yes | Every tap and shower |
| Reverse osmosis (with catalytic pre-filter) | Yes | Drinking and cooking |
| Under-sink catalytic carbon | Yes | Kitchen tap |
| Standard activated carbon | Barely | Chlorine only |
| Vitamin C | Yes | Showers and baths |
FAQs: Filters & Chloramine
Q: Does Orange County use chlorine or chloramine?
Most Orange County water agencies use chloramine as their primary disinfectant. Check your local utility’s annual water quality report to confirm what’s in your supply.
Q: Will a Brita or standard pitcher filter remove chloramine?
Not effectively. Standard pitcher filters use basic activated carbon, which targets chlorine taste and odor — not chloramine. You’ll need catalytic carbon for real results.
Q: How do I know if my filter removes chloramine?
Read the label or spec sheet. Look for “catalytic carbon” or a stated “chloramine reduction” rating. If it only mentions chlorine, it likely won’t remove chloramine.
Q: Is chloramine in tap water safe to drink?
Yes. The disinfectant levels used in public water are regulated and considered safe. Many homeowners still filter it out to improve taste or reduce skin irritation.
Q: Can I remove chloramine by boiling water?
No. Boiling removes chlorine over time, but chloramine is far more stable and won’t boil off effectively. Filtration is the reliable route.
Q: Why does chloramine bother my skin?
Chloramine can strip natural oils and irritate sensitive skin, leading to dryness or itching after showers. A vitamin C or catalytic carbon shower filter usually helps.
Q: Do I need a whole-house system, or is under-sink enough?
It depends on your goal. If you only want better drinking water, an under-sink catalytic carbon filter is enough. If skin irritation in the shower is the issue, go whole-house.
Q: How often should I replace a chloramine filter?
It varies by product and water use, but most catalytic carbon cartridges last 6–12 months. Check the manufacturer’s rating and track your install date.
