Coto de Caza Tap Water Quality Report
Coto de Caza's water met every enforceable federal limit, but 2 results sit above a health goal. For many substances that goal is zero, so the number that matters is the distance to the limit.
Utility
SANTA MARGARITA WATER DISTRICT
People Served
164,604
MCL Violations
0
Last Updated
Is Coto de Caza Tap Water Safe to Drink?
Read that carefully, because "above a health goal" is the phrase people misread. For many substances the goal is zero, so it can mean "found at all" rather than "too much" — the number that matters is the distance to the enforceable limit, and the table below shows both. Where a finding warrants it, match a certified filter to that contaminant rather than to a "removes 99%" claim.
The data below shows test results from 1 water utility serving 164,604 people in the Coto de Caza area. Water quality testing is conducted regularly and reported to the EPA. This report was last updated 2025-10-07.
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in California
Coto de Caza Water Service Areas
What these numbers actually mean for Coto de Caza, CA
We read Coto de Caza, 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
- 39 analytes tested
- 23 PFAS compounds on record
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Recommended Water Filters for Coto de Caza
Based on Coto de Caza'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 Coto de Caza 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 Coto de Caza's water readings can explain
Utility-reported data for Coto de Caza includes a chlorine-based disinfectant — the readings behind these common tap water questions. We publish a city-level hardness figure for Coto de Caza, 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 Coto de Caza's water
Coto de Caza's tap water measures 9.2 grains per gallon (158.0 mg/L) — hard on the USGS scale, the range where scale on fixtures and appliances is the usual complaint.
Water softener cost for 9.2 gpg water in Coto de Caza — 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 Coto de Caza Tap Water
Coto de Caza's water met every enforceable federal limit, but 2 results sit above a health goal. For many substances the EPA sets that goal to zero, so "above the goal" can mean "found at all" — the number that matters is the distance to the enforceable limit, and this page shows both.
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