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Specialist collection · 10 sources

Water quality

Water chemistry, pollution and quality monitoring.

For environmental consultants, hydrologists, drainage engineers, planners, ecologists, GIS analysts, water quality scientists, water quality specialists.

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Credible niche datasets and tools ranked for discovery, with an evidence quality floor.

software
61.8/100Currency A

openswmm.engine ↗

Dynamic hydrology-hydraulic water quality simulation model for stormwater, wastewater, and combined sewer collection systems

What's in it

Data offered docs-verified
stormwater hydrology (runoff and infiltration) · hydraulic routing (dynamic wave, explicit finite-volume 1D, 1D/2D coupled overland flow) · water quality transport and treatment · two-zone subcatchment groundwater · RDII (rainfall-derived inflow and infiltration) · full SWMM 5.x LID controls · runtime climate forcing and per-subcatchment PET · pumps, orifices, weirs and HEC-22 inlets
Coverage llm-inferred
Global (ENTRY metadata only; not stated in DOCS)
Formats docs-verified
SWMM .inp input · GeoPackage (.gpkg, optional) · GeoJSON (model generation input) · binary output files · NumPy arrays (Python) · C API (C/C++) · Python package (PyPI)
Access docs-verified
Free and open source; licence MIT per DOCS badge (ENTRY lists 'Other', so verify before reuse); no authentication

Useful for

Use cases llm-inferred
Build a drainage or sewer network model from GIS/GeoJSON data with ModelBuilder for a drainage strategy · Assess surcharge and flooding in combined sewer systems for capacity checks · Compare LID and SuDS treatment-train scenarios for pollutant load and runoff volume · Run hot-start forecasts and scenario comparisons for operational sewer networks
Audience llm-inferred
drainage engineers · flood consultants · hydrologists · water quality modellers · Python developers and GIS analysts

Limitations

Constraints llm-inferred
Several capabilities are roadmap work plans, not shipped: spatially explicit groundwater, multispecies LARD water quality, heat transport, LID as storage nodes; spatially explicit inlets are in development · Licence conflict: ENTRY says 'Other', DOCS badge says MIT · GPU/threaded 2D backends ship as separately loaded plugins, not in the base build · v6.0.0 is new; SWMM 5 models need migration per the Python docs · DOCS do not mention UK-specific parameters, units or design standards; UK applicability is unverified · Software library, not a hosted service or MCP server; C/C++ requires building from source with vcpkg/CMake

Some details auto-extracted · unverified

Globalhealthy

Known official sources

Government and regulator sources for this discipline, ranked by quality.

data apiGovernment / regulator
73/100Currency E

EA Bathing Water Quality API ↗

Environment Agency bathing water environmental quality classifications and sample results for coastal and inland bathing water pollution assessment.

What's in it

Data offered llm-inferred
bathing water classification
Coverage llm-inferred
England
Access llm-inferred
Free/open, no authentication required; licence OGL-3.0

Useful for

Use cases llm-inferred
Screening bathing water classification as a constraint for coastal or river outfall and drainage consent assessments · Baseline water quality context for FRA or environmental impact assessment in English coastal areas · Planning constraint check for developments near designated bathing waters
Audience llm-inferred
environmental consultants · water quality specialists · drainage engineers · planners

Limitations

Constraints llm-inferred
No DOCS retrieved, so coverage, time span, resolution, update frequency and formats are unverified · Description is brief; the scope of classification fields is not confirmed · Not an MCP server; no tools listed in metadata

Englandrestricted

data apiGovernment / regulator
72.3/100Currency E

EA Water Quality Data ↗

Environment Agency water quality sampling results for river pollution, environmental assessment and waterbody condition analysis.

Live via TerraMCP ↗

wq_sampling_points · wq_measurements

What's in it

Data offered docs-verified
sampling points · water quality observations
Coverage llm-inferred
England
Resolution registry
sampling points
Access llm-inferred
free/open, no authentication; licence OGL-3.0

Useful for

Use cases llm-inferred
River water quality baseline for FRA or WFD assessment using nearest sampling points · Mapping sampling point locations around a site for environmental baseline reporting · Water quality evidence for planning and permit applications within an area of interest
Audience llm-inferred
hydrologists · environmental consultants · ecologists · GIS analysts

Limitations

Constraints llm-inferred
Requires JavaScript; web map interface only · No machine-readable API, formats or export described in DOCS · Time span, resolution and update frequency not stated in DOCS

Englandpage reachable

data apiGovernment / regulator
71.3/100Currency E

EA Catchment Data Explorer ↗

Environment Agency Water Framework Directive catchment and waterbody environmental status, river basin planning measures and water quality pressures.

What's in it

Data offered docs-verified
site classifications (CSV) · classification tables · challenges tables (CSV) · objectives tables (CSV) · measures information · protected areas (CSV) · boundary/GIS geometry (Shapefile, GeoJSON) · all data summary tables
Coverage docs-verified
England
Resolution registry
WFD water bodies
Formats docs-verified
CSV · Shapefile · GeoJSON
Access llm-inferred
Free web download, no authentication (per catalogue metadata); licence OGL-3.0 (per catalogue metadata)

Useful for

Use cases llm-inferred
WFD waterbody classification and status review for a site within an England river basin district · Protected areas screening for constraints on FRA or drainage consent work (CSV download) · Catchment boundary export as Shapefile or GeoJSON for baseline GIS mapping · Review of objectives and measures for a waterbody when preparing an RBMP-based assessment
Audience llm-inferred
hydrologists · flood consultants · drainage engineers · ecologists · planners · GIS analysts

Limitations

Constraints llm-inferred
Browser download only; no API or tool interface described in the docs · Some CSV files may be too large to open in Excel · England only · Update frequency and data vintage not stated in the docs

Englandpage reachable

datasetGovernment / regulator
64/100Currency E

Nutrient neutrality calculators ↗

Natural England nutrient neutrality calculators for assessing nitrogen and phosphorus loads from development and mitigation of ecological impacts on protected habitats in planning applications.

What's in it

Data offered docs-verified
nutrients from waste water · nutrients from current land use · nutrients from future land use · nutrients removed through SuDS · final nutrient budget (net change plus buffer)
Coverage docs-verified
England (27 nutrient neutrality catchments)
Update frequency llm-inferred
Irregular, no schedule stated; last updated 11 March 2026
Formats llm-inferred
spreadsheet (worksheet-based calculator)
Access llm-inferred
Free to use, no authentication; licence OGL-3.0 (from entry metadata)

Useful for

Use cases llm-inferred
Nutrient budget for a residential planning application in a nutrient neutrality catchment · Assessing LPA mitigation requirements for future housing growth in a catchment · Wastewater nutrient load inputs for a foul drainage strategy (WWTW or septic tank/PTP) · SuDS nutrient removal inputs for a development drainage design
Audience llm-inferred
developers · local planning authorities · planners · ecologists · drainage engineers

Limitations

Constraints llm-inferred
Limited to the 27 listed nutrient neutrality catchments · Designed for residential developments · Requires manual data gathering from several external viewers (catchment explorer, soil viewer, NRFA, UK Soil Observatory) · Septic tank or package treatment plant use needs a maintenance regime and, where relevant, a chemical dosing management plan · Map-based rainfall lookup cannot be searched by location · No programmatic API; worksheet-based manual entry

Englandhealthy

data apiGovernment / regulator
60.7/100Currency E

EPA Ireland Geoportal / HydroNet ↗

Irish water quality

What's in it

Data offered docs-verified
Water quality maps and figures · WFD river waterbodies and sub-basin spatial data · OSI river and lake network (Geometric River Network, Lake Segment) · EPA Hydrometric Gauges Register · Biological Q stations and records · Lake phytoplankton taxonomic data · Lake macrophyte data · EPA licensed facilities · PRTR facilities · NEMN lake monitoring sites
Coverage docs-verified
Ireland · varies by dataset, e.g. 2007-2025 (lake macrophyte data), 2019-2024 (water quality maps)
Resolution docs-verified
1:50,000 scale (OSI river and lake GIS data)
Formats docs-verified
WMS
Access llm-inferred
No authentication; free download (licence CC-BY-4.0 per catalogue metadata)

Useful for

Use cases llm-inferred
WFD waterbody and sub-basin context for Irish river or lake projects · Catchment and river network mapping at 1:50,000 for Irish desk studies · Locating nearest Irish hydrometric gauge from the gauges register for baseline context · Water quality map review for Irish environmental impact or diffuse pollution assessments
Audience llm-inferred
hydrologists · GIS analysts · environmental consultants · ecologists · planners

Limitations

Constraints llm-inferred
Covers Ireland only, not the UK · Update frequency not stated; release dates are per dataset · Download file formats are not specified in the docs · Datasets cover different periods, so there is no single continuous time series · Hydrometric gauges register is a register; the docs do not state that flow or level time series are provided · Catalogue lists no tools, so no MCP interface is indicated

Irelandpage reachable

datasetGovernment / regulator
53.6/100Currency E

Surface temperature, surface oxygen, water clarity, water chemistry and phytoplankton chlorophyll a data from Esthwaite Water, 1945 to 2013 ↗

This is a long-term monitoring dataset of surface temperature, surface oxygen, water clarity, water chemistry and phytoplankton chlorophyll a from weekly to fortnightly sampling at Esthwaite Water in Cumbria, England that began in 1945 for some variables. The data were initially collected by the Freshwater Biological Association but have been collected by the Centre for Ecology & Hydrology (CEH) and its predecessor Institute of Freshwater Ecology since 1989. The data available to download compri

What's in it

Data offered docs-verified
surface temperature (TEMP, °C) · surface oxygen saturation (OXYG, % air-saturation) · Secchi depth (SECC, m) · alkalinity (ALKA, µg/l as CaCO3) · pH · ammonium (NH4N, µg/l) · nitrate (NO3N, µg/l) · soluble reactive phosphate (PO4P, µg/l) · total phosphorus (TOTP, µg/l) · dissolved reactive silicon as SiO2 (SIO2, µg/l) · phytoplankton chlorophyll a (TOCA, µg/l)
Coverage docs-verified
Esthwaite Water, Cumbria, England (single lake) · 1945-04-01 to 2013-12-31
Resolution docs-verified
Single fixed point (buoy at deepest part of lake); weekly to fortnightly sampling; water samples integrated 0-5 m
Formats docs-verified
CSV
Access docs-verified
Download from NERC EIDC; licence terms and conditions apply (Non-Open government licence)

Useful for

Use cases llm-inferred
Long-term lake water quality baseline for ecological or water quality impact assessments in the Lake District · Nutrient trend context (TOTP, PO4P, NO3N) for eutrophication risk assessments · Temperature and oxygen reference series for lake climate-change impact studies
Audience llm-inferred
ecologists · hydrologists · environmental consultants · water quality scientists

Limitations

Constraints llm-inferred
Single lake only (Esthwaite Water); not transferable to other waterbodies without caveats · Data end in 2013 and do not cover current conditions · Weekly to fortnightly sampling, so short-term events may be missed · On some occasions samples were taken from the shore and not integrated over 0-5 m (flagged as Flag 2) · Licence terms apply; citation required in publications

Englandhealthy

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