After you order drinking water testing near me, or anywhere, your sample follows a fixed path: collect it with the kit that ships to you, mail it back with the prepaid label already included, and the lab logs, analyzes, and reports it within 5 to 7 business days.
What Happens After You Order Drinking Water Testing in the South Bay?
Once you order, KELP ships a kit built for your specific panel: the correct bottles, written collection instructions, and a prepaid return label. You collect the sample, mail it back, and the lab takes over from there.
The whole path from order to report follows six steps:
| Step | What happens | Time |
|---|---|---|
| 1. Order | Choose a panel on ketos.co, priced $199 to $699 | Same day |
| 2. Collect | Follow the kit’s written instructions for hold time and container handling | Your own schedule |
| 3. Ship | Mail the sample back with the prepaid label already in the box | Depends on your carrier and drop-off timing |
| 4. Lab receives and logs | The sample is checked in against your order, starting chain of custody | The day it arrives |
| 5. Analyze | The lab runs the named EPA method for each parameter in your panel | Within the reporting window |
| 6. Report | Your results post digitally | 5 to 7 business days from when the lab received the sample |
Each step happens once, in order, and none of them require a phone call to schedule; the only two things on your calendar are collecting the sample and dropping it in the mail. The lab and the shipping carrier handle the rest.
How Do You Collect the Sample Correctly?
Each kit includes written instructions specific to its panel: which tap or wellhead to use, how long to let it run first, and how soon to ship the sample back. A mishandled sample can skew results before the lab ever sees it, so following those instructions matters.
- If you are testing for PFAS, use the bottle and instructions from that specific kit, not a container from a different panel or one from home. Fluorinated products near the collection point can affect trace-level results, so choosing the PFAS-specific panel matters.
- If you have a closing date in the next two weeks, order today, so your sample reaches the lab with room inside its 5 to 7 business day reporting window.
- If you get a result close to a benchmark, order a confirmation retest from the same tap before acting on it.
- If you are sampling a kitchen tap, run the cold water for the time the instructions specify before filling the bottle, unless the instructions call for a first-draw sample from water that has sat idle in the line; a first-draw sample is used specifically to catch metals like lead that can leach from plumbing during the hours water sits still, so follow whichever method your kit’s instructions specify.
- If you are sampling a private well, collect after the pump has run long enough to clear the line, following the kit’s instructions for exactly how long.
Two things affect a result more than which lab processed it: whether the right bottle was used for the right parameter, and whether the sample reached the lab within its hold time. Both are printed on the instructions that ship with every kit.
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Order a Water Test →What Is Chain of Custody, and Why Does It Matter?
Chain of custody is the record of who handled your sample and when, from collection to the final report. KELP’s lab logs each sample against your order the moment it arrives, which keeps each result tied to your specific tap or well. That log also shows how quickly the sample reached the lab after collection.
Testing tied to a lawsuit, a regulatory filing, or a formal dispute carries extra documentation requirements beyond a household test. Ask the lab about chain-of-custody support before you order if that applies to you.
How Long Does Lab Water Testing Take, Step by Step?
Results post digitally within 5 to 7 business days of the lab receiving your sample. That window starts at receipt, not at the moment you place your order or drop the package in the mail.
The days your sample spends in transit to the lab sit outside that 5 to 7 business day window and depend on your carrier and how quickly you ship after collecting. Ordering ahead of a deadline is the one variable a homeowner controls directly; a sample mailed on a Friday, for example, may not reach the lab until the following week depending on the carrier’s pickup schedule.
What Does the Report Actually Show You?
The report gives one number per compound next to its federal or state benchmark, in plain language. The number and the benchmark sit on the same line, so there is nothing to look up separately. That is a different deliverable from a test strip’s color read.
Each number traces to a named EPA method: EPA 200.8 for metals by ICP-MS, EPA 300.1 for anions like nitrate and fluoride, and EPA 537.1, 533, and 1633 for PFAS. Named methods make the report comparable to public benchmarks, such as the 10 ppm federal nitrate limit or the 4 ppt federal PFOA/PFOS limit.
A report worth reading includes:
- One measured number for each compound in your panel, not a bare pass or fail.
- The relevant federal or state benchmark printed beside that number.
- Plain language rather than a chemistry-degree vocabulary.
- A digital format you can save, forward to a buyer or agent, or bring to a doctor’s appointment.
This page does not cover which panel to order or how a Sunnyvale lab compares to one elsewhere; see water testing in the South Bay: what a Sunnyvale lab tests for and the KETOS water testing lab in Sunnyvale for those questions. Ready to start the process? Order a KETOS KELP water test and get a digital report in 5 to 7 business days.
KETOS Environmental Lab Services
Name: KETOS Environmental Lab Services (KELP)
Address: 520 Mercury Dr, Sunnyvale, CA 94085
Phone: (408) 357-4745
Category: Water testing service
Hours: See current hours on the Google Business Profile
Map: Get directions to 520 Mercury Dr, Sunnyvale, CA 94085
Frequently Asked Questions
What happens to my water sample after I mail it in?
The lab checks it in against your order, which starts chain of custody, then runs the named EPA method for each parameter in your panel and posts a digital report within 5 to 7 business days of receiving the sample.
How long does drinking water testing take from sample to report?
5 to 7 business days from when the lab receives your sample, not from when you order or ship it. The transit time to the lab sits outside that window and depends on your carrier.
What is chain of custody in water testing?
It is the record of who handled your sample and when, from collection through the final report. For most homeowner tests it means the lab logging your sample against your order. Testing tied to a legal or regulatory matter carries extra documentation, so ask the lab about that before you order.
Do I need to do anything special to collect a PFAS sample?
Yes. Use the bottle and instructions included in the PFAS-specific kit, not a household container or one from a different panel. Fluorinated products and certain plastics near the collection point can affect trace-level PFAS results.
Sources: EPA National Primary Drinking Water Regulation for PFAS, announced April 10, 2024 (epa.gov/sdwa/and-polyfluoroalkyl-substances-pfas); City of Sunnyvale 2024 Water Quality Report via the State Water Resources Control Board’s electronic CCR portal (ear.waterboards.ca.gov, PWSID CA4310014), for the federal nitrate MCL; KELP product pages and prices from the verified facts register, checked 2026-09-16/17. All fetched 2026-09-17.
