Sierra Madre Tap Water Quality Report
Sierra Madre's water has 1 contaminant above EPA MCLGs. Consider using a certified water filter for additional protection.
Water system
SIERRA MADRE-CITY, WATER DEPT.
People Served
11,000
Health-based violations since 2020
0
SIERRA MADRE-CITY, WATER DEPT.. EPA SDWA violation data as of Q2 2026 (downloaded 2026-07-09).
Latest sample on file
Oct 2025 · SIERRA MADRE-CITY, WATER DEPT.
Utilities publish newer results in their annual water quality report (Consumer Confidence Report).
Is Sierra Madre 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. Sierra Madre's water has 1 contaminant above EPA health-based guidelines (MCLGs), while it meets federal legal limits.
SIERRA MADRE-CITY, WATER DEPT., Sierra Madre's water system, serves 11,000 people. Water quality testing is conducted regularly and reported to the EPA. The latest sample on file for SIERRA MADRE-CITY, WATER DEPT. is from Oct 2025.
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in California
Sierra Madre Water Service Areas
What these numbers actually mean for Sierra Madre, CA
We read Sierra Madre, 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.
- 1 contaminant above EPA MCLGs, 7 contaminants with an EPA health goal detected in some samples (no level on file) and 1 nitrate reading above 10 mg/L whose basis is unconfirmed (above EPA's limit if measured as nitrogen, within it if measured as nitrate)
- 40 results on file
- 23 PFAS compounds on record
Buying a home here? Property Water Report — $49 Emailed within one business day.
Get the Weekly Water Brief
One email a week on water testing, treatment, and what water-quality data means for your home.
Free forever. Unsubscribe anytime. We never share your email.
Recommended Water Filters for Sierra Madre
Based on Sierra Madre's water quality data, these NSF-certified filters are recommended to remove contaminants above EPA MCLGs.
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
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:
Filters for what Sierra Madre reported
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
Advanced Microplastics Test
$829
Cutting-edge testing for microplastics particles in drinking water using advanced laboratory techniques.
Tap Score
Haloacetic Acids (HAA9) Test
$275
Tests for disinfection byproducts formed when chlorine reacts with organic matter in water treatment.
What Sierra Madre's water readings can explain
Utility-reported data for Sierra Madre includes a chlorine-based disinfectant — the readings behind these common tap water questions. We publish a city-level hardness figure for Sierra Madre, 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.
On a private well near Sierra Madre? 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.
Water softener cost and installation in Sierra Madre
Sierra Madre's tap water measures 9.4 grains per gallon (161.0 mg/L) — hard on the USGS scale, the range where scale on fixtures and appliances is the usual complaint.
Water softener cost for 9.4 gpg water in Sierra Madre — 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. For California as a whole, read water softener cost in California — priced against the plumber wage published for the state.
Frequently Asked Questions About Sierra Madre Tap Water
Sierra Madre's water has 1 contaminant 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 SIERRA MADRE-CITY, WATER DEPT.. For a problem with your water now (discolored water, no water, low pressure, a leak), contact SIERRA MADRE-CITY, WATER DEPT. directly.
Check another location
Get the Weekly Water Brief
One email a week on water testing, treatment, and what water-quality data means for your home.
One email a week. Unsubscribe anytime.