{"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/coliform-summaries"},"page":{"paginated":true,"total":0,"limit":50,"offset":0,"returned":0,"hasMore":false,"nextOffset":null,"prevOffset":null},"window":{"periodFrom":"2024-09-25","periodTo":"2026-09-25","source":"a default window, not your choice: the last two years. Give periodFrom and periodTo 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."}},"reading":"The number of routine coliform-negative samples the agency recorded for each monitoring period, at every system in this installation EXCEPT those the agency records as Non-Public — its own exclusion on every all-systems page of its application, and some of the systems it removes are active. ONLY ACCEPTED OR VALIDATED SUMMARIES RECORDED FOR COMPLIANCE PURPOSES are listed — the agency's own filter, reproduced, so this is the whole of what it publishes rather than the whole of what it holds. THE WINDOW ABOVE IS ON THE MONITORING PERIOD, not on a collection date: a summary is a count over a period and has no collection date, so the dates you can narrow this list by are periodFrom and periodTo rather than the collection dates its siblings take. The agency records these as summary records carrying one of three coliform analyte codes. Where an installation holds summary records of another kind, or none, this collection is empty — so emptiness here is not evidence about any system's coliform record. summariesLoaded reports what this installation actually holds, counted at request time, so \"none loaded\" can be told from \"loaded, of another kind\". Where it is empty, it is empty for EVERY system. The individual samples are the record to use: /v1/coliform-samples.","summariesLoaded":{"note":"The sample-summary records this installation holds, by analyte, counted now — on the same basis as these collections, which is: records the agency kept for COMPLIANCE PURPOSES, on systems it does not class Non-Public, whatever their activity status. Those are the predicates, not a reference to them, so the figures reconcile with what you can actually page through without opening the query. An empty list means no sample summaries are loaded at all. A list naming analytes other than the agency's three coliform codes means summaries of a different kind are loaded — lead and copper 90th-percentile summaries live in these same tables and are served at /v1/water-systems/{pwsid}/lead-and-copper.","analytes":[{"code":"PB90","name":"LEAD SUMMARY","summaries":14837},{"code":"CU90","name":"COPPER SUMMARY","summaries":14836}]},"summaries":[]}