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ToolboxLab TestingTotal Suspended Solids (TSS)
Labeled water sample bottles packed for certified lab analysis
Lab Testing

Total Suspended Solids (TSS)

How much material is suspended in your water, measured by weight.

$64

Checkout arrives with the store connection. Orders attach to the lake on your account.

Overview

Total suspended solids measures the actual mass of particles held in the water column — silt, clay, organic debris, and algae. The sample is filtered, the filter is dried, and the residue is weighed. It is a direct, quantitative answer to the question of how much material is in your water, and it is the standard measurement for sediment and erosion problems. Method SM 2540 D; MDL 0.2 mg/L, RL 0.2 mg/L.

What's measured & how

1 parameter · Suspended solids, gravimetric

  • Total Suspended Solids (TSS)
    Result type:
    Quantitative
    Unit:
    mg/L
    MDL:
    0.2
    RL:
    0.2
    Analytical method:
    SM 2540 D

MDL = method detection limit. RL = reporting limit. Provided by the performing laboratory.

You get

  • Signed laboratory report, filed in your lake's Documents & Reports
  • Each result loaded into your lake's Data Library (Plus, Lake Admin, PRO)

How it's produced

Test type
Suspended solids, gravimetric
Sample
One surface-water grab sample, collected by you with the kit
Return shipping
Prepaid 2-day return to the laboratory
Analyzed by
Independent accredited partner laboratory, with full chain of custody
Method basis
EPA-approved
Turnaround
8 business days from lab receipt
Analytical method
SM 2540 D
Product category
  • Physical ProductShips to you
  • ConsumableLab testing
  • Availability

    Kit ships in 2 business days

  • Shipping

    Flat-rate to your front door. Shipping details

  • SKU

    SL-SL-SW-E-S-VK1

Example result

Example result

4.1 mg/L

Method: SM 2540 D

Read against chlorophyll-a to separate sediment from algae

Turnaround

Results are available within 8 business days of the lab receiving your sample.

What problem does this solve for our lake?

  • Cloudy water has two very different causes and they call for opposite responses. If the cloudiness is algae, you have a nutrient problem and you manage nutrients. If it is suspended sediment, you have an erosion or runoff problem and you manage the shoreline and watershed. TSS is how you tell them apart, particularly when read alongside chlorophyll-a: high TSS with low chlorophyll-a means sediment, high TSS with high chlorophyll-a means algae.
  • Suspended sediment causes real damage independent of nutrients. It blocks the light aquatic plants need, smothers fish spawning beds and benthic habitat, abrades gills, and carries attached phosphorus and metals into the lake — sediment is a nutrient delivery vehicle as well as a pollutant. It also fills the lake in, which is the slow structural problem behind most dredging projects.
  • Common sources are construction sites, agricultural fields, unstabilized shoreline, road ditches, stream inflows during storms, and boat wakes in shallow water. TSS sampled at inflows versus mid-lake is the standard way to locate them.

What's included?

  • A complete Total Suspended Solids test kit shipped directly to you
  • All materials required for clean, contamination-free sample collection
  • Step-by-step collection and preservation instructions
  • Prepaid 2-day return shipping to our accredited partner laboratory
  • Analysis by EPA-approved methods at an accredited partner laboratory, with full chain of custody
  • Results loaded automatically into your lake's account

What's not included

  • Sample collection. You collect the sample; we supply everything you need to do it correctly.
  • Boat, dock, or shoreline access to your sampling site
  • Depth-profile sampling. This is a single grab sample unless you order multiple kits.
  • Ice or a cooler for shipping, which you supply
  • Treatment, remediation, or applicator services
  • A written management plan. The Boathouse can help you interpret results and decide next steps.
  • Turbidity (EPA 180.1, NTU), the optical measure of how those particles affect clarity. For both, order the TSS & Turbidity Test.
  • Particle composition. TSS tells you how much, not what it is made of.
  • Secchi depth, which is a field measurement

Requirements

  • A well-mixed sample collected without disturbing bottom sediment
  • Same-day shipment after collection, kept cold
  • For source identification, samples from multiple sites collected the same day — typically an inflow, a mid-lake reference, and any site of concern
  • A Plus, Lake Admin, or PRO subscription to have results loaded into your Lake Pulse account
  • Questions about site selection, timing, or which test fits your lake? Contact the Lake Pulse Boathouse before you order.
What you get back

Results

  • Suspended solids reported in mg/L, with a reporting limit of 0.2 mg/L
  • A quantitative basis for evaluating erosion, runoff, and sediment delivery
  • When paired with chlorophyll-a, a clear answer as to whether your cloudy water is sediment or algae
  • Results load automatically into your lake's Data Library in the Lake Pulse Portal
  • Data can be charted in the Analytics Hub, used to trigger alerts, or shared with your board and members
  • A downloadable, signed lab report is filed in your lake's Documents & Reports for permanent reference
  • Results are found in your lake's portal, accessible only to Plus, Lake Admin, and PRO subscription tiers

Pro tips

  • Sample during or right after a storm. Dry-weather TSS in a lake is usually low and uninformative. The sediment arrives with the rain, and that is when the measurement earns its keep.
  • Sample the inflows, not just the lake. A tributary carrying heavy sediment during runoff is a finding you can act on; a mid-lake average is not.
  • Pair with chlorophyll-a. It is the cheapest way to settle the sediment-versus-algae question definitively.
  • Don't sample near a running outboard or in shallow water on a windy day. You will resuspend bottom material and measure your own boat.
  • If TSS is high and phosphorus is high, they are probably the same problem. Phosphorus rides on sediment particles. Fixing erosion often fixes both.
Results sync to the Portal for Plus, Lake Admin, and PRO subscribers

Results from this product land in your lake's shared record in the Portal — next to everything else your lake has ever measured, instead of in an inbox.

Compare subscriptions

About these results

Every result shows the date and time the sample was collected. Results reflect one sample, collected at a specific place and depth, and analyzed by an independent accredited laboratory using the method listed on this page. Lake conditions change across a lake and over time, sometimes within hours, in ways a single sample may not capture. Every method has detection and reporting limits; where the laboratory provides them, they are reported with your results. A detection is not a diagnosis, and a non-detection does not prove absence. Results are not a regulatory or compliance determination unless the agency involved accepts them as one. Results can help you make decisions about safe swimming and water use, but no result is definitive for every place and time. It is always good practice to check posted signs and your state or local health authorities. Recommendations are options to consider; decisions, and responsibility for any action taken, rest with you.

Questions on this?

Our team can help you choose the right solution for your lake, explain how results sync to your Portal, or point you to the right subscription.

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