# Trusted Water Systems

_Company profile on San Diego Water Heater Guide — verified 2026-06-10._

Trusted Water Systems is an owner-operated San Diego water heater and water treatment specialist on a C-36 plumbing license verified active since 2022. Founder Jacob McGrew is named on the site, and the product lineup is published with unusual model-level specificity: Navien tankless series and Bradford White tanks including the AeroTherm heat pump model. It claims 24/7 availability and a 100% satisfaction guarantee; no founding year, prices, or written warranty terms are published.

## At a glance

- **Location:** San Diego, CA
- **CSLB license:** #1087368 C-36 (CSLB-verified)
- **24/7 availability:** Yes — company-published 24/7 claim
- **Same-day service:** —
- **Financing:** —
- **Website:** https://trustedwatersystems.com
- **Phone:** (619) 386-5020
- **Pricing:** No prices or fees published
- **Warranty:** "Your satisfaction 100% guaranteed" — no specific parts/labor terms published
- **Service areas:** San Diego, La Mesa, Chula Vista, National City, Spring Valley, El Cajon, Carlsbad, Encinitas, Escondido, Oceanside, San Marcos, Vista

## Observed strengths

- CSLB license #1087368 (C-36 Plumbing) verified current and active
- Publishes its lineup at the model level — Navien tankless series, Bradford White tanks, AeroTherm heat pump
- Owner identified by name on the site — accountability many larger shops don't offer
- Focused scope: water heaters and water treatment, not general plumbing

## Ask before hiring

- The license was first issued in February 2022 — ask how long the team has been doing this work
- Only a general satisfaction guarantee is published — request written parts and labor warranty terms
- No financing mentioned — ask if you need it

## Sources we checked

- [Company homepage (24/7 claim, model-level lineup, license in footer)](https://trustedwatersystems.com/) — checked 2026-06-10
- [About page (owner, license, service areas)](https://trustedwatersystems.com/about-us/) — checked 2026-06-10
- [CSLB license detail #1087368 (status, classification, issue date)](https://www2.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1087368) — checked 2026-06-10

Canonical page: https://www.sandiegowaterheater.com/company/trusted-water-systems/

## Machine-readable index

- Site index for LLMs: https://www.sandiegowaterheater.com/llms.txt
- EntityMap v1.0 (entities + sourced evidence): https://www.sandiegowaterheater.com/entitymap.json
- Agent instructions (when to use this guide): https://www.sandiegowaterheater.com/agents.md
- XML sitemap: https://www.sandiegowaterheater.com/sitemap-index.xml

_Our editorial rankings follow our published methodology. Companies cannot pay to change their editorial ranking. Some companies may pay for enhanced profiles or clearly labeled sponsored directory placements; sponsorship never affects editorial rank._

_Published by San Diego Water Heater Guide. Guide last updated June 2026._