At a glance
- What it is certified to test
- 1 of the 9 common well tests on the CA list (see which)
- Price
- no per-test price printed on the lab’s website when we read it (14 Nov 2026): ask for a quote
- Turnaround
- not stated on the state list or the lab’s website: ask when you order
- Homeowner samples
- not stated: ask the lab
Lab facts
- Listed by
- California (California State Water Resources Control Board - Environmental Laboratory Accreditation Program (ELAP))
- Address
- 13720 Butterfield Drive, Truckee, CA 96161 · Open in Google Maps
- Phone
- (530) 587-2525
- Website
- www.ttsa.ca.govNot on the state list: found and checked by us, 14 Nov 2026
- Public / homeowner samples
- Public samples: ask the labCA ELAP lab type 'Public Wastewater System': the state list does not say whether it takes samples from the public
Certification record
- Certificate ID
- CA ELAP 1144
- Issued by
- California State Water Resources Control Board - Environmental Laboratory Accreditation Program (ELAP) (certification program)
- Expiry on the list
- 3/31/2028 · expires in about 16 months
- List version
- California ELAP - Accredited Laboratories (map layer) + per-lab Fields of Accreditation, version Map layer fetched 2026-11-15; scope PDF as of 4/29/2026
- We fetched it
- 15 Nov 2026 (file SHA-256 cbc97398a144…) · open the state file
Tests on the state list
| Contaminant | On this state list |
|---|---|
| Coliform / E. coli | Named on the official list |
| Nitrate | Not named on this list |
| Arsenic | Not named on this list |
| Lead | Not named on this list |
| PFAS | Not named on this list |
| Uranium | Not named on this list |
| Radon (water) | Not named on this list |
| Manganese | Not named on this list |
| VOCs | Not named on this list |
Groups as written on the state list (2)
- E. coli P/A
- Total Coliform P/A
- Named on the official list The state list names this analyte (or a column for it) for this lab.
- Group-level certification Certified for a parent group (e.g. 'Inorganics') that includes this analyte. Confirm the specific test with the lab.
- Partial group certification The list marks the group as 'Partial'. Confirm this analyte with the lab.
- Subcontracted The lab sends this analyte to another accredited lab (MDH 'X*').
2 drinking-water analytes across 1 methods in ELAP Fields of Accreditation 101 Microbiology of Drinking Water. Scope PDF: https://www.waterboards.ca.gov/drinking_water/certlic/labs/documents/elap_certs/70.pdf (as of 4/29/2026).
Nearest labs that take homeowner samples
No other lab that takes homeowner samples is within 25 miles of this lab; the nearest is 26 miles away. Distances are straight-line from the address on the state list (approx. = ZIP-code centre). “Takes homeowner samples” comes from a state list column or the lab’s own website, as named.
| Lab and tests named on its list | Town | Distance | Tests in common with this lab | Price printed | Turnaround printed | Homeowner samples: source |
|---|---|---|---|---|---|---|
| Nevada State Public Health Laboratory Coliform / E. coli, Nitrate, Arsenic, Lead | Reno, NV | 26 mi (approx.) | 1 | – | – | Nevada list |
| SGS Silver State Analytical Lab - Reno Coliform / E. coli, Nitrate, Arsenic, Lead | Reno, NV | 28 mi (approx.) | 1 | – | – | California list |
| Western Environmental Testing Laboratory Coliform / E. coli, Nitrate, Arsenic, Lead | Sparks, NV | 29 mi (approx.) | 1 | from $624 | Our standard turn-around time is 10-b... | California list |
| Cranmer Engineering, Inc. Coliform / E. coli, Nitrate, Arsenic, Lead | Grass Valley, CA | 45 mi (approx.) | 1 | – | – | California list |
| Onterris Laboratories, LLC PFAS | El Dorado Hills, CA | 67 mi (approx.) | 0 | – | – | Washington list |
Price and turnaround as printed on each lab’s own website and checked by a second reader; – = not published or not read yet.
Around this lab: Nevada County, CA
- Private wells: about 29,355 people, 30% of Nevada County’s 98,877 residents (USGS, 2015); rank 18 of 58 counties in California by people on wells.
- EPA radon zone (indoor air): Zone 2: moderate potential (average indoor radon may be between 2 and 4 pCi/L). EPA says the zone map should not decide whether one home needs testing.
- Arsenic above 10 µg/L (USGS model): about 656 private-well users (95% range 481 to 882; 2010 base), rank 30 of 58 in the state. A screening estimate, not a measurement of any well.
- Older homes (Census ACS 2020–2024): 42% of 54,309 housing units were built before 1980, below the state share of 56%. Homes built before 1986 are more likely to have lead solder or fittings, so test tap water for lead there.
- PFAS in public water nearby (public supply, not your well): 7 public systems serving this county reported EPA UCMR 5 results; 1 had a PFOA or PFOS sample at or above 4.0 ng/L.
County figures describe where the lab is, not the lab. Sources: USGS 2015 water use and 2017 arsenic estimates, EPA radon zones, Census ACS table B25034 (2020–2024), EPA UCMR 5 (2023–2026); details and links on the sources page.
Before you send a sample
Call the lab to confirm it's currently certified for the exact test and method, that it accepts samples from homeowners, and how to collect and ship them. Bacteria samples have short holding times. Status can change between list updates. To check a status, contact the California certification program.
Is this your lab?
Labs can ask for corrections through the agency that publishes their state list. Homeowner service, prices and turnaround above come only from the lab’s own website. To ask us to correct or remove this listing, write to us (how we handle listings).
California ELAP - Accredited Laboratories (map layer) + per-lab Fields of Accreditation. Fetched 2026-11-15 (UTC). File SHA-256 cbc97398a144…
Open the state lab-certification page (official list)