Golden, United States
Schemes: Water SupplyWater Supply MicroWater Pollution
- Microbiology
- Water
- Environment, soil & air
10 schemes
Accreditation self-declaredWaters ERA (ERA, a Waters company)
Golden, Colorado, United StatesAccepts international participants
Accreditation self-declared (A2LA)
Colorado-based producer of proficiency testing samples and certified reference materials for environmental laboratories, with PT studies for drinking water (WS), wastewater (WP), soil and air and emissions, plus support for the US EPA DMR-QA study.
Testing fields
- Microbiology
- Water
- Environment, soil & air
Schemes (25)
Water Supply (WS) PT studies
- Water
- Analytes
- Drinking-water inorganics, organics and microbiology, e.g. solids, ammonia, inorganic disinfection by-products, 1,4-dioxane, total phenolics, PFAS, coliforms, heterotrophic plate count
Water Pollution (WP) PT studies
- Water
- Analytes
- Wastewater inorganics, organics and microbiology, e.g. solids, perchlorate, dissolved oxygen, sulfite, HEM, PCB congeners, glycols, PFAS, coliforms
Soil PT studies
- Environment, soil & air
- Sample type
- Soil
- Analytes
- PCB congeners, PFAS, base/neutrals and acids, organochlorine pesticides, 1,4-dioxane, glycols, petroleum hydrocarbons (TPH, EPH, VPH)
Air & Emissions (AE) PT studies
- Environment, soil & air
- Sample type
- Gas cylinders, sorbent tubes, PUF, filter paper and impinger solutions
- Analytes
- Volatiles, semivolatiles, PCBs, PAHs, aldehydes and ketones, metals, mercury, hexavalent chromium, hydrogen halides, fluoride, nitrogen oxides, sulfur dioxide, ammonia, particulate matter
Discharge Monitoring Report-Quality Assurance (DMR-QA) study
- Water
- Analytes
- Support and samples for the US EPA annual DMR-QA study for NPDES permit holders (e.g. pH, TSS, ammonia, BOD, total residual chlorine, oil and grease, coliforms)
- Rounds/year
- 1
PotableWatR Coliform MicrobE (WS)
- Microbiology
- Water
- Rounds/year
- 12
Heterotrophic Plate Count (WS)
- Microbiology
- Water
- Rounds/year
- 12
WasteWatR Coliform MicrobE (WP)
- Microbiology
- Water
- Rounds/year
- 12
SourceWatR Microbe (WS)
- Microbiology
- Water
- Rounds/year
- 4
Solids, WP
- Water
- Rounds/year
- 12
Solids, Concentrate, WS
- Water
- Rounds/year
- 12
Perchlorate (WP)
- Water
- Rounds/year
- 4
PFAS in Drinking Water, WS PT
- Water
- Rounds/year
- 4
PFAS in Wastewater, WP PT
- Water
- Rounds/year
- 4
PFAS in Soil, Soil PT
- Environment, soil & air
- Sample type
- Soil
- Rounds/year
- 4
PCB Congeners in Wastewater, WP PT
- Water
- Rounds/year
- 4
Organochlorine Pesticides in Soil
- Environment, soil & air
- Sample type
- Soil
- Rounds/year
- 4
Base/Neutrals & Acids in Soil
- Environment, soil & air
- Sample type
- Soil
- Rounds/year
- 4
Massachusetts EPH in Soil
- Environment, soil & air
- Sample type
- Soil
- Rounds/year
- 4
Volatiles in Gas Cylinder (AE)
- Environment, soil & air
- Rounds/year
- 4
Metals on Filter Paper (AE)
- Environment, soil & air
- Rounds/year
- 4
PAHs on PUF (AE)
- Environment, soil & air
- Rounds/year
- 4
1,4-Dioxane (WS)
- Water
- Rounds/year
- 2
Total Phenolics (4-AAP) (WS)
- Water
- Rounds/year
- 2
Hexavalent Chromium in Impinger Solution (AE)
- Environment, soil & air
- Rounds/year
- 2
| Scheme | Testing fields | Sample type | Analytes | Rounds/yr | Link |
|---|---|---|---|---|---|
| Water Supply (WS) PT studies |
| — | Drinking-water inorganics, organics and microbiology, e.g. solids, ammonia, inorganic disinfection by-products, 1,4-dioxane, total phenolics, PFAS, coliforms, heterotrophic plate count | — | Scheme page for Water Supply (WS) PT studies (opens in a new tab) |
| Water Pollution (WP) PT studies |
| — | Wastewater inorganics, organics and microbiology, e.g. solids, perchlorate, dissolved oxygen, sulfite, HEM, PCB congeners, glycols, PFAS, coliforms | — | Scheme page for Water Pollution (WP) PT studies (opens in a new tab) |
| Soil PT studies |
| Soil | PCB congeners, PFAS, base/neutrals and acids, organochlorine pesticides, 1,4-dioxane, glycols, petroleum hydrocarbons (TPH, EPH, VPH) | — | Scheme page for Soil PT studies (opens in a new tab) |
| Air & Emissions (AE) PT studies |
| Gas cylinders, sorbent tubes, PUF, filter paper and impinger solutions | Volatiles, semivolatiles, PCBs, PAHs, aldehydes and ketones, metals, mercury, hexavalent chromium, hydrogen halides, fluoride, nitrogen oxides, sulfur dioxide, ammonia, particulate matter | — | Scheme page for Air & Emissions (AE) PT studies (opens in a new tab) |
| Discharge Monitoring Report-Quality Assurance (DMR-QA) study |
| — | Support and samples for the US EPA annual DMR-QA study for NPDES permit holders (e.g. pH, TSS, ammonia, BOD, total residual chlorine, oil and grease, coliforms) | 1 | Scheme page for Discharge Monitoring Report-Quality Assurance (DMR-QA) study (opens in a new tab) |
| PotableWatR Coliform MicrobE (WS) |
| — | — | 12 | Scheme page for PotableWatR Coliform MicrobE (WS) (opens in a new tab) |
| Heterotrophic Plate Count (WS) |
| — | — | 12 | Scheme page for Heterotrophic Plate Count (WS) (opens in a new tab) |
| WasteWatR Coliform MicrobE (WP) |
| — | — | 12 | Scheme page for WasteWatR Coliform MicrobE (WP) (opens in a new tab) |
| SourceWatR Microbe (WS) |
| — | — | 4 | Scheme page for SourceWatR Microbe (WS) (opens in a new tab) |
| Solids, WP |
| — | — | 12 | Scheme page for Solids, WP (opens in a new tab) |
| Solids, Concentrate, WS |
| — | — | 12 | Scheme page for Solids, Concentrate, WS (opens in a new tab) |
| Perchlorate (WP) |
| — | — | 4 | Scheme page for Perchlorate (WP) (opens in a new tab) |
| PFAS in Drinking Water, WS PT |
| — | — | 4 | Scheme page for PFAS in Drinking Water, WS PT (opens in a new tab) |
| PFAS in Wastewater, WP PT |
| — | — | 4 | Scheme page for PFAS in Wastewater, WP PT (opens in a new tab) |
| PFAS in Soil, Soil PT |
| Soil | — | 4 | Scheme page for PFAS in Soil, Soil PT (opens in a new tab) |
| PCB Congeners in Wastewater, WP PT |
| — | — | 4 | Scheme page for PCB Congeners in Wastewater, WP PT (opens in a new tab) |
| Organochlorine Pesticides in Soil |
| Soil | — | 4 | Scheme page for Organochlorine Pesticides in Soil (opens in a new tab) |
| Base/Neutrals & Acids in Soil |
| Soil | — | 4 | Scheme page for Base/Neutrals & Acids in Soil (opens in a new tab) |
| Massachusetts EPH in Soil |
| Soil | — | 4 | Scheme page for Massachusetts EPH in Soil (opens in a new tab) |
| Volatiles in Gas Cylinder (AE) |
| — | — | 4 | Scheme page for Volatiles in Gas Cylinder (AE) (opens in a new tab) |
| Metals on Filter Paper (AE) |
| — | — | 4 | Scheme page for Metals on Filter Paper (AE) (opens in a new tab) |
| PAHs on PUF (AE) |
| — | — | 4 | Scheme page for PAHs on PUF (AE) (opens in a new tab) |
| 1,4-Dioxane (WS) |
| — | — | 2 | Scheme page for 1,4-Dioxane (WS) (opens in a new tab) |
| Total Phenolics (4-AAP) (WS) |
| — | — | 2 | Scheme page for Total Phenolics (4-AAP) (WS) (opens in a new tab) |
| Hexavalent Chromium in Impinger Solution (AE) |
| — | — | 2 | Scheme page for Hexavalent Chromium in Impinger Solution (AE) (opens in a new tab) |
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Accreditation
- Status
- Accreditation self-declared
- Accreditation body
- A2LA
- Certificate number
- 1539.01
Self-declared: stated by the provider and not yet verified by EqasOnline.
About this listing
Compiled from Waters ERA (ERA, a Waters company)'s own published information or sent in by the provider, and reviewed by EqasOnline. Check scheme details, fees and dates with the provider before you enrol. 25 schemes listed here.
Last updated 1 Nov 2026.
Is this your organisation, or is something out of date? Update this listing.
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