Which information or test can answer this air, water or soil question?
Name the medium, place, time and suspected problem before buying a test. Public reports, household measurements and laboratory analyses have different scopes. Keep the sampling method, units, tested substances and limitations with every result.
Evidence checked October 15, 2026. No hands-on testing.
Write a question a test could answer
“Is this environment safe?” is too broad for a single device or sample. A more useful question names the place, time and substance or condition: outdoor particle pollution for an afternoon plan, radon in a defined part of a home, specified contaminants in a private well, or substances suggested by a garden site’s history. Record why you are asking and what decision the result would affect.
Choose a source by the actual environmental question
| Question | Useful starting resource | Scope to retain |
|---|---|---|
| Outdoor air conditions | AirNow local information and AQI explanation | Outdoor AQI does not measure every indoor contaminant. |
| Radon in a home | EPA interpretation and CDPHE test instructions | A home measurement needs a defined purpose, device, placement, duration and conditions. |
| Private-well water | EPA well guidance and a certified drinking-water lab | The chosen analytes and sampling method define what the report covers. |
| Potential garden-soil contamination | EPA site-history and testing guidance | Nutrient/pH testing may omit contaminants of concern. |
Build an information and testing record
- Describe the medium and decision. Distinguish outdoor from indoor air, private well from public water supply, and soil fertility from possible contamination. Keep the location and intended use precise enough for the question.
- Read existing original information. Record its source, area, date and measured or modeled quantity. A regional map or older assessment can guide the next question without establishing a result for an individual building or sample.
- Ask what the proposed test includes. Request the analytes, units, sample requirements and reporting limits. Ask whether the provider and method are appropriate for this medium and question. A broad marketing label does not list every substance actually measured.
- Obtain the sampling instructions before collecting. Follow the chosen laboratory/device protocol, including container, place, timing, storage and delivery requirements. Do not improvise a sample and assume a later lab can recover the missing information.
- Confirm total cost and follow-up. Ask about analysis, equipment, shipping, repeat samples, interpretation and any additional tests. Identify who will explain the result and which current guidance will be used.
- Keep the actual report. Retain sample identity, date/time, conditions, method, units, tested substances and qualifications. Read the laboratory’s definitions, reporting limits and interpretation instructions.
- Match the conclusion to that record. Use the relevant authority or qualified provider for interpretation and follow-up. Leave untested substances, other rooms/locations and later conditions outside the conclusion.
Read AQI within its outdoor-air scope
AirNow’s AQI Basics explains six color-coded categories for outdoor air and health and identifies five major pollutant groups. Open the actual location/time record and applicable activity guidance when making a near-term decision. This research checked the explanation, not a current local value, an indoor sensor or a person’s health needs. The captured page’s no-data interface message is not evidence that a particular community lacks monitoring.
Keep radon units and qualifications together
EPA’s radon action guidance recommends fixing homes at 4 picocuries per liter (pCi/L) or more. EPA also states that there is no known safe exposure level and recommends considering action between 2 and 4 pCi/L. The action level is a follow-up benchmark, not a boundary between risk and no risk. Follow the applicable testing and confirmation procedure before treating a result as the basis for a specific project.
The captured CDPHE testing page distinguishes testing purposes and describes approved DIY devices and licensed measurement professionals. Use the full instructions for the actual purpose and kit. CDPHE quotes a rough $10–$50 kit range; this catalog did not verify current stock, checkout prices, included analysis or postage. A kit range does not price a mitigation project, and no individual contractor was verified.
Separate water and soil test menus
EPA’s private-well guidance identifies annual baseline tests, additional tests for suspected contaminants, and circumstances such as flooding, system work or changed water quality that need prompt testing attention. It directs readers to certified drinking-water laboratories. Ask the local health department and laboratory which substances and methods apply to the actual well; this guide does not supply a treatment design or interpret a household result.
EPA’s potentially contaminated garden-site guidance explains how property history informs contaminant questions and why a routine soil-fertility analysis can be insufficient. Some labs need a separate request and payment for environmental contaminants. EPA also distinguishes screening levels from final cleanup standards. Do not treat a good nutrient report, a visual inspection or one screening value as a complete declaration of site suitability for food growing.
Decision map: select the next evidence step
Source fits the question?
Identify medium, place, time and substance. Check whether a public record answers this scope.
Test method and provider fit?
Confirm analytes, sampling instructions, qualifications, total price and interpretation route.
Result supports the decision?
Keep units and limitations; obtain applicable follow-up and preserve untested questions.
Text alternative: First match information to the environmental question. If testing is needed, agree the method and provider before sampling. Interpret only the tested scope and retain unresolved questions.
Common obstacles and your next action
- A “water test” or “soil test” is not a complete analyte list. Request the list and the appropriate sampling instructions.
- An outdoor air index does not establish radon levels or every other indoor condition.
- A website access date does not make an older measurement current.
- A private-well testing pathway and a public-utility report concern different supply arrangements.
Write the question, the decision it affects, the existing evidence and the next provider question on one page. Obtain the exact test scope and total quote before paying or collecting a sample. For a current health or urgent contamination concern, use the responsible health/environmental authority’s current instructions.
Resources and their limitations
AirNow — AQI Basics
Desk-reviewed. U.S. EPA / AirNow
Explains the scope and categories of outdoor AQI before a reader uses a local air-quality report.
Access and cost: Public explanation without login/payment. No location query, sensor, indoor-air measurement or current local AQI verified.
Use it: Read the index definition, then open the official local report and applicable activity guidance. Retain location, pollutant, time and relevant sensitive-group advice.
Basis and limits: The captured page includes no-data UI text; that is not evidence that a location lacks monitors. AQI concerns outdoor air and specified pollutants, not every indoor contaminant or an individual diagnosis. Linked activity guides were not separately reviewed.
Alternatives: Current state/local air agency information; a measurement chosen for a specific indoor-air question; an appropriate health professional for personal advice.
EPA radon action guidance with Colorado testing pathway
Desk-reviewed. U.S. EPA; Colorado Department of Public Health and Environment
Connects a radon result with EPA qualifications and a Colorado-specific route to appropriate testing.
Access and cost: Public pages. CDPHE quotes about $10–$50 for DIY kits; this is a provider-stated range, not a verified current retail quote. No kit ordered or professional retained.
Use it: Use the CDPHE testing instructions for the test purpose and exact device. Follow kit instructions and applicable professional standards. Retain units, duration, location and conditions; obtain help interpreting and addressing a result.
Basis and limits: EPA’s 4 pCi/L action level is not a safe/no-risk boundary; EPA also suggests considering action at 2–4 pCi/L. Real-estate and own-home testing purposes differ. No measurement, legal rental right, contractor license or mitigation design verified.
Alternatives: A properly selected DIY kit or qualified measurement professional; relevant state/local program. A regional map cannot establish the home’s result.
EPA — Protect Your Home’s Water
Desk-reviewed. U.S. Environmental Protection Agency
Helps a private-well user choose testing questions and a certified drinking-water laboratory.
Access and cost: Public guidance and laboratory-directory links. Test costs, local subsidies and laboratory certification for a particular analyte were not checked.
Use it: Identify the private well and concern. Ask the health department/laboratory which analytes, sampling instructions and timing apply; use a certified drinking-water lab and retain the actual report and follow-up instructions.
Basis and limits: Private-well guidance is not the same as a public-utility report. EPA identifies annual baseline tests and circumstances needing additional/immediate tests. A result covers only the analytes, place and time sampled; no household water was tested.
Alternatives: Current utility water-quality information for public supply; local health department; analyte-specific qualified laboratory assistance.
EPA — Garden planning on potentially contaminated land
Desk-reviewed. U.S. Environmental Protection Agency
Explains why soil fertility tests, contamination assessment and site suitability are different questions.
Access and cost: Public page. No property record search, site assessment, soil sample, laboratory quote or assistance application performed.
Use it: Review site history with appropriate local/environmental assistance. Ask which contaminants the history suggests and whether the proposed test actually includes them. Obtain site-specific interpretation before relying on the land for food production.
Basis and limits: The page addresses potentially contaminated/brownfields sites; it is not a declaration that a particular garden is contaminated. Routine nutrients/pH tests may omit contaminants. Screening levels are not final cleanup standards. No remediation method, funding eligibility or legal acquisition rule adopted.
Alternatives: A different suitable site; a competent environmental assessment; Extension plus the appropriate environmental regulator/lab for distinct questions.
Sources and review notes
The resource evaluations above use the following original pages. Public websites were checked on October 15, 2026 in America/Denver (October 16 UTC). A successful capture does not establish every linked page or individual result. No hands-on testing occurred.
- AirNow — AQI Basics
- EPA radon action guidance with Colorado testing pathway
- EPA — Protect Your Home’s Water
- EPA — Garden planning on potentially contaminated land
- Testing and mitigating your home for radon | Colorado Department of Public Health and Environment
Related guides
Watersheds, soil and landscape; urban ecology and shared green space; health literacy and evaluating advice.
Examples are teaching aids; no course completion, field navigation or practical intervention was tested.
Corrections: email director@victimsguide.com with the guide title, the point to correct and an original source. Please omit private medical, policy and identity records.
