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Mohave County · Arizona · EPA SDWIS 2026Q2

Total Trihalomethanes (TTHM) in Lake Havasu City water

Total Trihalomethanes (TTHM) detected below the federal limit in Lake Havasu City's public supply.

Total Trihalomethanes (TTHM)

Detected

Health-based: yesWithin federal legal limits
Federal legal limit (MCL)80 ppb

Detected below the federal limit. 5 EPA records on file (most recent 2025).

EPA records reflect the public water system, not your home's plumbing. Health-based goals (EPA MCLG / WHO) are health targets and are often stricter than the federal legal limit (the MCL). A utility appearing on this list does not by itself mean the water is unsafe to drink. The only way to know what is in your specific home is to test your own water.

The health-based goal vs. the legal limit

The federal legal limit (MCL) is the maximum allowed by law. The health-based goal (EPA MCLG / WHO) is a stricter health target — not itself a legal limit.

Health-based goal (EPA MCLG / WHO)

0.15 ppb

Federal legal limit (MCL)

80 ppb

Source: EPA MCL / MCLG; WHO guidelines · 2026

What removes Total Trihalomethanes (TTHM)

carbonRO

Advertising disclosure

The Very Good Water Company is an authorized WaterTech dealer and earns revenue from installations and lead referrals.

Pentair / Pelican · Whole-House Filtration

Pentair Pelican PC600 Whole House Filter

#1
NSF NSF/ANSI 42NSF NSF/ANSI 61
stages
2
flow gpm
8
media life
5yr / 600k gal
$900–$1,100Limited lifetime on tanks warranty

Pentair / Pelican · Whole-House Filtration

Pentair Pelican PC1000 Whole House Filter

#2
NSF NSF/ANSI 42NSF NSF/ANSI 61
stages
2
flow gpm
10
media life
5yr / 1M gal
$1,300–$1,600Limited lifetime on tanks warranty

Waterdrop · Reverse Osmosis Systems

Waterdrop G3P800 Tankless RO (800 GPD)

#3
NSF NSF/ANSI 42NSF NSF/ANSI 53NSF NSF/ANSI 58NSF NSF/ANSI 372
gpd
800
stages
7
tankless
true
$540–$9991yr limited warranty

Aquasana · Whole-House Filtration

Aquasana Rhino Whole House Filter (1,000,000 gal)

#4
NSF NSF/ANSI 42NSF NSF/ANSI 61
stages
4
flow gpm
7
filter life
10yr / 1M gal
$900–$1,20010yr limited warranty

GE Appliances (Haier) · Reverse Osmosis Systems

GE GXRV40TBN 5-Stage Reverse Osmosis

#5
NSF NSF/ANSI 42NSF NSF/ANSI 53NSF NSF/ANSI 58NSF NSF/ANSI 401NSF NSF/ANSI P473NSF NSF/ANSI P231
gpd
14.76
stages
5
antimicrobial
true
$250–$3501yr limited warranty

A.O. Smith · Reverse Osmosis Systems

A.O. Smith AO-US-RO-4000 4-Stage RO

#6
NSF NSF/ANSI 42NSF NSF/ANSI 53NSF NSF/ANSI 58NSF NSF/ANSI 401NSF NSF/ANSI P473
gpd
50
stages
4
fluoride pct
99
$200–$3001yr limited warranty
Full Lake Havasu City water report →About Total Trihalomethanes (TTHM)
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