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Water quality

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Rivers, oceans, lakes, aquifers, groundwater, stormwater, urban canals, underground streams, estuaries, and more -- we are passionate about water quality! This page will help you find resources to explore the waterbodies you care about, and connect with other people who have the same interests:

Questions on Water Quality:

Title Author Updated Likes Comments
Are there examples where environmental concerns were addressed as a result of people filing complaints (or suspected permit violations)? @stevie 16 days ago 7
How can you tell if a sheen on water is bacterial or petroleum (oil)? @stevie about 1 month ago 2
Why do individuals/organizations want to collect water quality data? @wmacfarl about 2 months ago 3
What water quality data can we collect to investigate oil/gas pollution? @wmacfarl about 2 months ago 2
How can I calibrate a turbidity sensor? @wmacfarl about 2 months ago 4
Are there simple tests for nitrates in well water? @stevie 2 months ago 10
DFRobot Turbidity Sensor Troubleshooting @mimiss 3 months ago 7
Reused fracking water? @charlotte_clarke 4 months ago 2
Can you relate Secchi disk measurements to turbidity sensor measurements? @wmacfarl 4 months ago 8
Pros/cons to cheap handheld water meters for pH, TDS, conductivity? @warren 5 months ago 3
How can we relate water quality sensor measurements to oil/gas pollution? @wmacfarl 5 months ago 2
How can DIY/community-collected environmental data be used? @wmacfarl 5 months ago 4
How can I make my own test with temperature sensor , ph sensor , DO sensor and ORP sensor with displayed on OLED screen . Thank you @safari 6 months ago 0
Can anyone tell what is wrong with my coqui? @stevie 11 months ago 14
Seeking Info re Commercial Low-cost Lead Screening Products @read_holman 11 months ago 8
Any tips on the search for accessible and safe stream entry points in an urban forest? @LaurenComSciATL 12 months ago 0
Dissolved Oxygen Testing and Citizen Science @belkinsa about 1 year ago 8
What are simple tools are available to test salinity level in wetlands ecosystem? @Filipaul about 1 year ago 1
DIY conductivity Sensors @roberts_ecofarm over 1 year ago 6
What are ways to monitor algae blooms? @stevie over 1 year ago 14
D.O. Monitoring on Public Lab @belkinsa over 1 year ago 5
I am looking for a low cost lab to test for PFOA/PFOS. @UpperPotomacRiverkeeper over 1 year ago 5
Where can we share well water data? @stevie over 1 year ago 7
Are there any DIY equipment that measure dissolved oxygen levels in water? @belkinsa over 1 year ago 6
What probes to get with data loggers? @pdhixenbaugh over 1 year ago 4
How to measure nutrient concetration in hydroponic system? @Aleksi12358 over 1 year ago 14
H2O sensores - oportunidade de parceria @Gasp00 almost 2 years ago 2
How to test water for heavy metals today? @Devon7 almost 2 years ago 4
What are water quality parameters we should monitor to understand our local stream health? @stevie almost 2 years ago 4
What are good resources for teaching middle school age children about water quality parameters? @stevie almost 2 years ago 5
How do I choose a method for monitoring turbidity? @stevie almost 2 years ago 2
Has anyone built a secchi disk before? @stevie almost 2 years ago 4
What should we look for when sourcing turbidity tubes? @stevie almost 2 years ago 7
What are good ways to test for pH levels and where can we get materials to do so? @stevie almost 2 years ago 6
How do I use pH strips to test pH? @warren almost 2 years ago 4
What are different methods of measuring water turbidity? @warren about 2 years ago 4
How is water turbidity regulated? @warren about 2 years ago 3
How do you find industrial WPDES permit details? @gretchengehrke about 2 years ago 2
In addition to testing for pH, what other water quality testing have you utilized, such as turbidity, conductivity, dissolved oxygen (DO), etc.? Can you share your experience with these? @gilbert about 2 years ago 0
When is the use of litmus paper insufficient to test for pH? @gilbert about 2 years ago 0
What water quality issues have recently emerged in your region, i.e. "boil water alerts," "swimming ban," "no fishing advisories," "water-borne disease outbreaks," "industrial spills," "contaminated flooding," "unusual water taste, color or smell"? @gilbert over 2 years ago 0
Effective low-cost water filters to remove hydrogen sulfide? @gretchengehrke over 2 years ago 2
How do I identify an oil sheen or spill or slick in aerial photography? @warren over 2 years ago 1
Water Filter Effectiveness @Mempet over 2 years ago 4
How do you account for signal drift with sensors in the field? @gretchengehrke over 2 years ago 2
data loggers for PH ? @MadTinker over 2 years ago 2
Nitrogenous waste sensors for 24/7 monitoring @winsorje almost 3 years ago 1
looking for ideas to detect/remove micro-beads/micro-fibers in water @vibhor over 3 years ago 2
Is there a water quality equivalent of Smoke School, the EPA air pollution observer certification? @warren over 3 years ago 1
Accessible procedure for calibrating conductivity measurements? @donblair over 5 years ago 3
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Water quality parameters

Read about different water quality parameters here, including pH, nitrogen, conductivity, temperature, ORP and turbidity:

Also see this overview of 7 ways to monitorn water quality:

Groups and projects working on water quality issues:

Title Updated Version Views Likes
Water Quality Sensor 4 months ago by warren 12 8,513 2
BabyLegs 8 months ago by warren 14 2,396 6
Coqui conductivity sensor 9 months ago by warren 57 2,924 22
Riffle: an Open Source Water Monitoring Approach about 2 years ago by warren 100 4,061 22
KnowFlow over 2 years ago by liz 2 899 2
Open Water about 3 years ago by klie 122 3,447 19
infoamazonia-network over 4 years ago by vjpixel 2 297 2

Water quality related pages

Title Updated Version Views Likes
Assess Turbidity in Water 11 months ago by liz 13 1,679 2
Common Water Contaminants 11 months ago by warren 36 978 4
Nitrogen 12 months ago by warren 3 103 1
Water quality parameters 12 months ago by warren 13 636 2
Filters about 1 year ago by warren 11 120 2
Water Sensors about 2 years ago by Nova 41 3,626 6
Conductivity of Water and Community Science about 2 years ago by gilbert 5 470 1
pH about 2 years ago by warren 4 306 0
Turbidity Measurement Methods & Regulations about 2 years ago by gilbert 1 896 0
Water Sampling over 2 years ago by warren 2 1,057 2
NPDES about 3 years ago by warren 17 332 0
Parâmetros de qualidade da água about 4 years ago by vjpixel 3 2,545 0
water quality indices over 4 years ago by vjpixel 5 337 2
What's going on in Water Monitoring? almost 6 years ago by kanarinka 5 329 10
Water Quality Primer with Jeff Walker almost 6 years ago by kanarinka 4 351 3
The Open Water Project: FAQ almost 6 years ago by donblair 4 410 1


Purpose Category Status Author Time Difficulty Replications
PureLab:Experiment and Installing Water Filters Record In Banmentun - - @shanlter - - 0 replications: Try it »
Water Quality Testing At Turkey Creek - - @Delaney - - 0 replications: Try it »
Coqui BBv1.0: Testing conductivity of a solution observe draft @donblair 1h easy 1 replications: Try it »
Practice reporting suspected frac sand violations - - @stevie - - 0 replications: Try it »
Draft: Collect a sample for laboratory analysis - - @warren - - 0 replications: Try it »
How to test a water sheen to tell if it is bacterial or petroleum - - @stevie - - 0 replications: Try it »
Draft: Find the concentration of a liquid with a DIY spectrometer - - @warren - - 0 replications: Try it »
How to collect a water sample - - @stevie - - 0 replications: Try it »

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