El Monte Tap Water Quality Report
El Monte's water has 2 MCL violations on record — an enforceable limit was exceeded, which is a different thing from a result sitting above a health goal.
Utilities
7 Utilities
People Served
353,423
MCL Violations
2
Last Updated
Is El Monte Tap Water Safe to Drink?
El Monte's water has 2 MCL violations on record at one of its 7 water systems. A violation means an enforceable limit was actually exceeded, which is a different thing from a result sitting above a health goal — it is the case where the number genuinely matters, and a certified filter matched to the finding is worth considering.
The data below shows test results from 7 water utilities serving 353,423 people in the El Monte area. Water quality testing is conducted regularly and reported to the EPA. This report was last updated 2025-07-21.
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in California
El Monte Water Service Areas
What these numbers actually mean for El Monte, CA
We read El Monte, CA’s published record and send you a short report — which findings warrant a decision, which to ignore, and what to do about it. Including when the answer is nothing.
- 2 contaminants above EPA health goals at its most-affected system
- 766 results across 7 water systems
- 23 PFAS compounds on record
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Recommended Water Filters for El Monte
Based on El Monte's water quality data, these NSF-certified filters are recommended to remove contaminants above EPA MCLGs.
Culligan
ZeroWater
NSF Certified:
Flow Rate
1.9 gpm
Daily Production
1 gpd
Highlights:
- Compact design
- Easy to set up
- Affordable
- NSF-42, NSF-53, NSF-401 certified
Removes 19 contaminants:
+14 more
Strontium, Molybdenum, Fluoride, Uranium, Lead, Total PFAS, Chlorine, 25, Phosphorus, Bicarbonate, Calcium, Carbonate, Magnesium, Sodium
Whirlpool Corporation
W11256135
NSF Certified:
Capacity
1001 gal
Filter Life
3 mo
Flow Rate
0.7 gpm
Removes 19 contaminants:
+14 more
Benzene, Carbofuran, Chlorine (Free), Chlorine (Total), Chlorine Dioxide, Chlorobenzene, Cryptosporidium, Ethylbenzene, Lead, Mercury, Metolachlor, Tetrachloroethylene, Toxaphene, Turbidity
Whirlpool Corporation
W11569861
NSF Certified:
Capacity
1001 gal
Filter Life
3 mo
Flow Rate
0.52 gpm
Removes 22 contaminants:
+17 more
Atrazine, Benzene, Carbofuran, Chlorine (Free), Chlorine (Total), Chlorine Dioxide, Chlorobenzene, Cryptosporidium, Ethylbenzene, Lead, Mercury, Metolachlor, Styrene, Tetrachloroethylene, Toxaphene, Trichloroethylene, Turbidity
AquaTru
Classic
NSF Certified:
Flow Rate
0.04 gpm
Daily Production
600 gpd
Highlights:
- Best overall contaminant reduction score
- Most performance certifications
- Lifetime warranty
- NSF-42, NSF-53, NSF-58, NSF-401 certified
Removes 23 contaminants:
+18 more
Molybdenum, Barium, Chlorine, Arsenic, 83+ contaminants, Calcium, Chloride, Copper, Magnesium, Nitrate, Phosphorus, Sodium, Sulfate, Total Dissolved Solids, Zinc, Total THMs, Chloroform, Nitrate (as N)
Test Your Water Quality
Professional laboratory testing provides accurate, detailed analysis of your drinking water.
SimpleLab
Advanced Home Water Test
$269
Comprehensive water analysis testing over 200 contaminants including bacteria, heavy metals, and chemical compounds.
Tap Score
PFAS Forever Chemicals Test
$339.95
Specialized test for PFOA, PFOS, and 24 other forever chemicals. Essential for areas near military bases, airports, or industrial sites.
Tap Score
Advanced Microplastics Test
$829
Cutting-edge testing for microplastics particles in drinking water using advanced laboratory techniques.
What El Monte's water readings can explain
Utility-reported data for El Monte includes sulfate and a chlorine-based disinfectant — the readings behind these common tap water questions. We publish a city-level hardness figure for El Monte, resolved from its water systems where they report one and estimated from county sampling where they do not. Each page starts with the hot-tap and cold-tap check, then shows what your own water system reported.
What a water softener costs for El Monte's water
El Monte's tap water measures 2.8 grains per gallon (48.1 mg/L) — soft on the USGS scale, below the range where scale is usually worth treating.
Water softener cost for 2.8 gpg water in El Monte — equipment and local installation labour for your ZIP code, with the sizing arithmetic shown in full. For the national picture first, read what a water softener costs — equipment, installation labour and ten-year ownership, each separated out.
Frequently Asked Questions About El Monte Tap Water
El Monte's water has 2 MCL violations on record at one of its 7 water systems. A violation means an enforceable federal limit was actually exceeded, which is a different thing from a result sitting above a health goal — it is the case where the number genuinely matters, and a filter certified for the contaminant involved is worth considering.
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