Private well annual water quality screen, nitrate-affected groundwater region — Fresno / San Joaquin Valley, CA.

The San Joaquin Valley carries more than half of California's community water systems with persistently contaminated tap water, and nitrate — mostly from agricultural land use — has been documented across the large majority of wells sampled valley-wide. The state's regional nitrate programs (the State Water Resources Control Board's Nitrate Project; the Central Valley Regional Water Board's CV-SALTS program) study and fund fixes at the community-system level; a private-well household here still needs its OWN annual certified-lab result, read against the same EPA nitrate standard, to know where its own well stands.

Where

Fresno-area / San Joaquin Valley, CA — at the private household well · Open the map

Pay

$150 proposed

This packet is not funded yet, so this figure is a proposed price and not money waiting in escrow. If a buyer funds it, approved proof settles that price onchain. If nobody funds it, approved proof earns provable credit toward the work instead of cash — recorded, and readable any time at vealth.net/labor/credit/(your wallet). You see which before you claim, never after.

Proof

A dated certified-laboratory result set (total coliform, E. coli, nitrate as N, TDS, pH) collected per the lab's own protocol with signed chain of custody, each result compared ONLY to its published standard, the documented regional nitrate context noted as context only, and any out-of-standard result routed per the iron law

This is exactly what gets it approved. Nothing settles without it.

Level

entry

Open until

2026-11-28

Posted by

0x034F…6c89

The creator wallet. Its signature is what approves proof and settles the wage.

How this work is done

A documented method, so this packet comes out the same whoever does it.

Bring

• The certified drinking-water laboratory's own sample bottles/kit (state-certified lab, never a home test-strip kit for a health-based result)
• Chain-of-custody form
• Cooler with ice packs if the lab requires cold, timed delivery (bacteria samples especially)
• Prior test results for trend, if any

Steps

1. 1. Confirm the household is on a private well (not a public/community system) and locate a state-certified laboratory; order the standard panel: total coliform bacteria, E. coli, nitrate (as N), total dissolved solids (TDS), pH.
2. 2. Follow the lab's own collection instructions exactly (sanitize the tap for bacteria samples, correct bottle/preservative per parameter, correct fill line) — improvised collection invalidates the health-based read.
3. 3. Complete and sign the chain-of-custody form; note collection date/time and sampling point (kitchen tap unless the lab specifies otherwise).
4. 4. Deliver/ship the samples within the lab's required holding time (bacteria samples are especially time-sensitive, often 24-30 hours).
5. 5. Record the lab's reported values once received, with the lab's own name and certification stated.
6. 6. Compare EACH result only to its published standard: total coliform/E. coli presence-absence; nitrate vs the EPA MCL of 10 mg/L as N; TDS/pH vs EPA secondary (aesthetic) guidance — record the comparison, never a household 'safe' verdict.
7. 7. Route every out-of-standard result per the decision rules; log the round against any prior round for trend.

What counts as done

• Certified laboratory named, with samples collected per its own kit/bottle instructions and a signed chain-of-custody form
• All five parameters (total coliform, E. coli, nitrate as N, TDS, pH) reported with values and units
• Each result compared explicitly to its published standard (coliform/E. coli presence-absence; nitrate vs the EPA 10 mg/L MCL); no household 'safe' or 'unsafe' verdict written
• Documented San Joaquin Valley agricultural nitrate context noted as regional stewardship framing, never treated as a substitute for this household's own lab result
• Any positive coliform/E. coli or nitrate exceedance routed per the decision rules, with the routing (local health department, alternative water, clinician) recorded

Proof is measured against these, not judged by taste.