Drinking water quality · 2022
· Verified
· PWSID CA2710007
What's in Gonzales, City of — Gonzales, Ca, CA tap water
1 contaminant in Gonzales, City of — Gonzales, Ca, CA's water sat at or above a federal limit, led by Thallium at 1.0x the limit.
- !1 contaminant at or above a federal limit — worst is Thallium at 1.0x
- !14 of 27 core regulated contaminants reported — 13 never appear in this report
- ✓No open federal violations
+How this score is calculated
Every system starts at 100. Points come off for measured levels, for the federal violation record, and for how much of the core regulated set the utility actually reported. All three inputs are the utility's own published numbers and EPA's own records.
- −12 contaminants at or above a federal limit
- −0 contaminants within 20% of a limit
- −0 open health-based violations
- −0 open monitoring / reporting violations
- −0 health-based violations resolved in the last 5 years
- −8 core regulated contaminants never reported (14/27)
A 90–100 · B 80–89 · C 70–79 · D 60–69 · F below 60. A system reporting under a third of the core set is capped at C however clean its numbers look — a short report is not a clean bill of health.
Full grading methodology, constant for constant →What to worry about
- Thallium1.0× the federal limit2 ug/L · limit 2 ug/L
+25 contaminants were measured and came in below the limitShow all
| Contaminant | Measured | Federal limit |
|---|---|---|
| Nitrate | 3.94 mg/L | 10 mg/L |
| Gross Alpha | 4.84 pCi/L | 15 pCi/L |
| Arsenic | 2 ug/L | 10 ug/L |
| Turbidity | 0.15 NTU | 1 NTU |
| Chlorine Total | 0.54 mg/L | 4 mg/L |
| Barium | 0.1–0.25 mg/L | 2 mg/L |
| Combined Radium | 0.6 pCi/L | 5 pCi/L |
| Copper | 89 ug/L | 1300 ug/L |
| Lead | 1 ug/L | 15 ug/L |
| Fluoride | 0.16 mg/L | 4 mg/L |
| TTHM | 0.66 ug/L | 80 ug/L |
| HAA5 | Not detected ug/L | 60 ug/L |
| Chloride | 33 mg/L | — |
| Sulfate | 106 mg/L | — |
| Iron | Not detected ug/L | — |
| Manganese | Not detected ug/L | — |
| Sodium | 34 mg/L | — |
| Escherichia coli (E. coli) | 0 | 0 |
| Color | Not detected | — |
| Hardness | 219 mg/L | — |
| Odor | 1 | — |
| pH | 7.4 | — |
| Specific Conductance | 604 uS/cm | — |
| Total Dissolved Solids | 410 mg/L | — |
| Uranium | 2.9 pCi/L | 20 pCi/L |
What this report doesn't tell you
13 of the 27 contaminants a community water system normally reports do not appear anywhere in Gonzales, City of — Gonzales, Ca, CA's data. Absent is not the same as absent-from-the-water — it means nobody published a number.
+Full detail: PFAS testing, water source, historical monitoring, and the federal violation record
Compliance history
Federal Safe Drinking Water Act violation & enforcement records (EPA SDWIS). A violation is a regulatory determination by the state or EPA — separate from the measured levels above.
- Maximum contaminant level exceededHealth-based6 violations on record · most recent Apr 1999resolved
Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗