South San Jose Hills Tap Water Quality Report
South San Jose Hills's water record shows 8 contaminants with an EPA health goal detected in some samples (no level on file). Consider using a certified water filter for additional protection.
Other systems listed for South San Jose Hills with results above guidelines: THREE VALLEYS MWD (2 above guidelines), ROWLAND WATER DISTRICT (2 above guidelines)
Water system
SUBURBAN WATER SYSTEMS-SAN JOSE
3 other systems are listed for South San Jose Hills. See their figures
People Served
168,843
Health-based violations since 2020
0
SUBURBAN WATER SYSTEMS-SAN JOSE. EPA SDWA violation data as of Q2 2026 (downloaded 2026-07-09).
Latest sample on file
Aug 2025 · SUBURBAN WATER SYSTEMS-SAN JOSE
Utilities publish newer results in their annual water quality report (Consumer Confidence Report).
Is South San Jose Hills 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. South San Jose Hills's water record shows 8 contaminants with an EPA health goal detected in some samples (no level on file).
SUBURBAN WATER SYSTEMS-SAN JOSE, South San Jose Hills's water system, serves 168,843 people. 3 other systems are listed for South San Jose Hills. Each system's results are listed under its own name, never added to SUBURBAN WATER SYSTEMS-SAN JOSE's. Water quality testing is conducted regularly and reported to the EPA. The latest sample on file for SUBURBAN WATER SYSTEMS-SAN JOSE is from Aug 2025.
In EPA's 2023–2026 UCMR 5 testing, SUBURBAN WATER SYSTEMS-SAN JOSE measured lithium at up to 56 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
South San Jose Hills Water Service Areas
What these numbers actually mean for South San Jose Hills, CA
We read South San Jose Hills, 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.
- 8 contaminants with an EPA health goal detected in some samples (no level on file)
- 101 results on file
- 23 PFAS compounds on record
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General-Purpose Water Filters for South San Jose Hills
South San Jose Hills's results show no result above EPA's health goals or legal limits, so these are general-purpose NSF/ANSI 53 certified filters, not chosen for any contaminant.
Pentair Residential Filtration, LLC
Everpure Residential H-300-NXT
NSF Certified:
Capacity
3001 gal
Filter Life
10 mo
Flow Rate
0.5 gpm
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
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
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:
Filters for what South San Jose Hills 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 South San Jose Hills's water readings can explain
Utility-reported data for South San Jose Hills includes a chlorine-based disinfectant — the readings behind these common tap water questions. We publish a city-level hardness figure for South San Jose Hills, 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 South San Jose Hills? 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 South San Jose Hills
South San Jose Hills's tap water measures 13.0 grains per gallon (223.0 mg/L) — very hard on the USGS scale, the range where scale on fixtures and appliances is the usual complaint.
Water softener cost for 13.0 gpg water in South San Jose Hills — 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 South San Jose Hills Tap Water
South San Jose Hills's water record shows 8 contaminants with an EPA health goal detected in some samples (no level on file). 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 SUBURBAN WATER SYSTEMS-SAN JOSE. For a problem with your water now (discolored water, no water, low pressure, a leak), contact SUBURBAN WATER SYSTEMS-SAN JOSE directly.
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