La Crescenta-Montrose Tap Water Quality Report
La Crescenta-Montrose's water has 3 contaminants above EPA MCLGs. Consider using a certified water filter for additional protection.
Other systems listed for La Crescenta-Montrose with results above guidelines: LA CANADA IRRIGATION DIST. (2 above guidelines), FOOTHILL MUNICIPAL WATER DIST. (2 above guidelines)
Water system
CRESCENTA VALLEY CWD
2 other systems are listed for La Crescenta-Montrose. See their figures
People Served
32,665
Health-based violations since 2020
0
CRESCENTA VALLEY CWD. EPA SDWA violation data as of Q2 2026 (downloaded 2026-07-09).
Latest sample on file
Aug 2025 · CRESCENTA VALLEY CWD
Utilities publish newer results in their annual water quality report (Consumer Confidence Report).
Is La Crescenta-Montrose Tap Water Safe to Drink?
We recommend using a certified water filter for additional protection, especially for vulnerable populations like children, pregnant women, and those with compromised immune systems. La Crescenta-Montrose's water has 3 contaminants above EPA health-based guidelines (MCLGs), while it meets federal legal limits.
CRESCENTA VALLEY CWD, La Crescenta-Montrose's water system, serves 32,665 people. 2 other systems are listed for La Crescenta-Montrose. Each system's results are listed under its own name, never added to CRESCENTA VALLEY CWD's. Water quality testing is conducted regularly and reported to the EPA. The latest sample on file for CRESCENTA VALLEY CWD is from Aug 2025.
In EPA's 2023–2026 UCMR 5 testing, CRESCENTA VALLEY CWD measured lithium at up to 45 µg/L, which EPA counts as above its health reference level of 10 µg/L. That level is a screening value EPA uses to decide what to study further, not a legal limit, and this result does not change this page's water-quality summary.
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in California
La Crescenta-Montrose Water Service Areas
What these numbers actually mean for La Crescenta-Montrose, CA
We read La Crescenta-Montrose, 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.
- 3 contaminants above EPA MCLGs and 3 contaminants with an EPA health goal detected in some samples (no level on file)
- 90 results on file
- 23 PFAS compounds on record
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Recommended Water Filters for La Crescenta-Montrose
Based on La Crescenta-Montrose'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
Santevia
Bath Filter
NSF Certified:
Flow Rate
0.36 gpm
Highlights:
- Organic cotton design reduces plastic used in construction
- Affordable upfront & ongoing cost
- The only bath filter that removed 100% chlorine with “normal” faster faucet flow
Removes 1 contaminants:
Waterdrop
A1
NSF Certified:
Flow Rate
1 gpm
Highlights:
- Performance certified
- Lower price than Philips
- Hot water dispensing
- Compact design
Removes 5 contaminants:
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
Filters for what La Crescenta-Montrose reported
Verify Your Water Quality with Independent Testing
With 3 contaminants above EPA MCLGs and 3 contaminants with an EPA health goal detected in some samples (no level on file), independent laboratory testing provides a second opinion and can track changes over time.
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.
With 3 contaminants above health guidelines, you may want to explore water purification options. Learn how to make distilled water at home for applications like humidifiers, CPAP machines, and baby formula.
What La Crescenta-Montrose's water readings can explain
Utility-reported data for La Crescenta-Montrose includes sulfate — the readings behind these common tap water questions. Each page starts with the hot-tap and cold-tap check, then shows what your own water system reported.
On a private well near La Crescenta-Montrose? Public-water results do not apply to private wells. See Los Angeles County well water testing and USGS risk data — modeled arsenic, nitrate, and the tests to run.
Frequently Asked Questions About La Crescenta-Montrose Tap Water
La Crescenta-Montrose's water has 3 contaminants above EPA MCLGs. While the water meets federal legal limits, we recommend using a certified water filter for additional protection, especially for vulnerable populations like children, pregnant women, and those with compromised immune systems.
Spotted something off on this page?
Residents keep our data honest.
This form corrects our data; it does not reach CRESCENTA VALLEY CWD. For a problem with your water now (discolored water, no water, low pressure, a leak), contact CRESCENTA VALLEY CWD directly.
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