{"meta":{"source":{"agency":"Mississippi State Department of Health","system":"SDWIS/STATE"},"limits":"Regulatory records as the agency reports them. AN EMPTY RESULT MEANS NOTHING MATCHED THIS RESPONSE'S SCOPE, NOT THAT THE AGENCY HAS NO RECORD: many collections are narrowed by the agency's own filters; each says so in its `scope` or `reading`. A record type this API does not serve is not evidence the records do not exist, and some of what the agency publishes is not served here. Read those before reporting any of these as an absence of fact.","coverage":"https://api.alpha.dww-next.mswater.us/coverage","apiVersion":"1.0.0","humanUrl":"https://alpha.dww-next.mswater.us/samples?analyte=4000"},"page":{"paginated":true,"total":6,"limit":50,"offset":0,"returned":6,"hasMore":false,"nextOffset":null,"prevOffset":null},"window":{"collectedFrom":"2024-09-25","collectedTo":"2026-09-25","source":"a default window, not your choice: the last two years. Give collectedFrom and collectedTo to choose your own, up to five years apart","limit":{"maxYears":5,"earliestAcceptable":"2021-09-25","why":"A window wider than five years makes this a multi-second scan of every record in the installation. THIS LIMIT IS OURS AND IS NOT A LIMIT ON WHAT THE AGENCY RECORDS: it holds those records for any range, and a narrower window here is an economy of ours rather than a boundary of theirs. One system's records carry no window limit at all, so a question about a single system is better asked there."}},"filters":{"analyte":{"code":"4000","name":"GROSS ALPHA, EXCL. RADON & U","type":{"code":"RA","label":"Radionuclide","labelSource":"dww-help"},"excludedHere":false},"detectedOnly":false},"reading":"Chem/rad samples taken for compliance purposes, not rejected, with at least one Accepted or Validated result, collected inside the window above, at every system in this installation EXCEPT those the agency records as Non-Public. That exclusion is the agency's own and it applies to every all-systems collection here; some of the systems it removes are active, so a count taken here is not a count of the agency's sampling. Only samples whose laboratory record is active and of type AC are listed — legacy's own join; the code is the agency's, published without a decode. ONE ROW IS A SAMPLE, NOT A RESULT — samples are listed here and prints no analyte, value or unit on them, so neither does this. For the numbers, follow system.records to that system's own /v1/water-systems/{pwsid}/samples, which carries every result inline under its sample. Its total counts SAMPLES, as this one does — not results, of which each sample has several. MICROBIOLOGICAL analytes are excluded from the unfiltered list by the agency's own query, which excludes every analyte typed as an organism — THOSE SAMPLES ARE NOT MISSING, THEY ARE AT /v1/coliform-samples, which is the other half of the same partition and is the larger half in this installation. Read both before concluding anything about how much the agency samples. THE ANALYTE FILTER IS A DIFFERENT DOOR: asking for a specific analyte drops that exclusion and replaces it with three NAMED codes — 3100 COLIFORM (TCR), 3013 FECAL COLIFORM and 3014 E. COLI. So ?analyte= PERMITS an organism the unfiltered list never shows, wherever such a sample falls inside the window you asked for, and asking for one of those three codes is empty either way. THIS IS A DIFFERENCE BETWEEN TWO QUERIES, NOT A FEATURE ANYONE DOCUMENTED. The agency reaches this filter only through its analyte list, which excludes organisms — so there the wider door is never opened, and this is the difference showing rather than a capability being offered. Whether any organism is reachable depends on the installation and on your window. An empty page under ?analyte= means no matching sample in that window; read filters and window above before reading it as absence. detectedOnly is the agency's own toggle and means a recorded concentration above zero; it is NOT the less-than indicator that decides whether a number counts as a detection on a single system's results. detectedOnly — On or off: send it bare, empty, or =true to turn it on, and =false or leave it out to turn it off. Any other value, a repeated one included, is refused with a 400.","samples":[{"system":{"pwsid":"MS0200001","name":"COMBINED UTILITIES","countyServed":"GEORGE","records":"/v1/water-systems/MS0200001"},"labSampleNumber":"810-202049-1","sampleType":{"code":"RT","label":"Routine","labelSource":"dww-help"},"collected":{"date":"2026-07-27","time":"12:25:00"},"samplingPoint":{"id":"TF104","location":"TREATMENT FACILITY TF104"},"laboratory":"EUROFINS EATON ANALYTICAL SOUTH BEND IN","matchingSamples":"/v1/water-systems/MS0200001/samples?labSampleNumber=810-202049-1&collectedOn=2026-07-27&samplingPoint=TF104"},{"system":{"pwsid":"MS0230003","name":"CLERMONT HARBOR","countyServed":"HANCOCK","records":"/v1/water-systems/MS0230003"},"labSampleNumber":"810-202153-1","sampleType":{"code":"RT","label":"Routine","labelSource":"dww-help"},"collected":{"date":"2026-07-28","time":"10:00:00"},"samplingPoint":{"id":"ST004","location":"TANK S004"},"laboratory":"EUROFINS EATON ANALYTICAL SOUTH BEND IN","matchingSamples":"/v1/water-systems/MS0230003/samples?labSampleNumber=810-202153-1&collectedOn=2026-07-28&samplingPoint=ST004"},{"system":{"pwsid":"MS0250105","name":"HINDS CO DETENTION CENTER-GALLATIN ST","countyServed":"HINDS","records":"/v1/water-systems/MS0250105"},"labSampleNumber":"810-201579-1","sampleType":{"code":"RT","label":"Routine","labelSource":"dww-help"},"collected":{"date":"2026-07-23","time":"10:00:00"},"samplingPoint":{"id":"TF101","location":"TREATMENT PLANT TF101"},"laboratory":"EUROFINS EATON ANALYTICAL SOUTH BEND IN","matchingSamples":"/v1/water-systems/MS0250105/samples?labSampleNumber=810-201579-1&collectedOn=2026-07-23&samplingPoint=TF101"},{"system":{"pwsid":"MS0260007","name":"EBENEZER RURAL WATER ASSN","countyServed":"HOLMES","records":"/v1/water-systems/MS0260007"},"labSampleNumber":"810-201577-1","sampleType":{"code":"RT","label":"Routine","labelSource":"dww-help"},"collected":{"date":"2026-07-23","time":"10:00:00"},"samplingPoint":{"id":"TF103","location":"TREATMENT FACILITY TF103"},"laboratory":"EUROFINS EATON ANALYTICAL SOUTH BEND IN","matchingSamples":"/v1/water-systems/MS0260007/samples?labSampleNumber=810-201577-1&collectedOn=2026-07-23&samplingPoint=TF103"},{"system":{"pwsid":"MS0360009","name":"HURRICANE CREEK WATER ASSN","countyServed":"LAFAYETTE","records":"/v1/water-systems/MS0360009"},"labSampleNumber":"810-201426-1","sampleType":{"code":"RT","label":"Routine","labelSource":"dww-help"},"collected":{"date":"2026-07-21","time":"09:00:00"},"samplingPoint":{"id":"TF081","location":"TREATMENT FACILITY TF081"},"laboratory":"EUROFINS EATON ANALYTICAL SOUTH BEND IN","matchingSamples":"/v1/water-systems/MS0360009/samples?labSampleNumber=810-201426-1&collectedOn=2026-07-21&samplingPoint=TF081"},{"system":{"pwsid":"MS0470002","name":"CITY OF HOLLY SPRINGS","countyServed":"MARSHALL","records":"/v1/water-systems/MS0470002"},"labSampleNumber":"810-201496-1","sampleType":{"code":"RT","label":"Routine","labelSource":"dww-help"},"collected":{"date":"2026-07-23","time":"12:00:00"},"samplingPoint":{"id":"TF080","location":"TREATMENT PLANT T080"},"laboratory":"EUROFINS EATON ANALYTICAL SOUTH BEND IN","matchingSamples":"/v1/water-systems/MS0470002/samples?labSampleNumber=810-201496-1&collectedOn=2026-07-23&samplingPoint=TF080"}]}