Drinking water quality · 2023
· Verified
· PWSID CA3610012
What's in Chino, City of — Chino, Ca, CA tap water
Every one of the 13 core regulated contaminants reported for Chino, City of — Chino, Ca, CA came in below its federal limit.
- !1 contaminant within 20% of a limit
- !13 of 27 core regulated contaminants reported — 14 never appear in this report
- ✓Nothing over a federal limit
- ✓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.
- −0 contaminants at or above a federal limit
- −4 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
- −9 core regulated contaminants never reported (13/27)
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
- Nitrate84% of the federal limit1.2–8.4 mg/L · limit 10 mg/L
Levels above the federal limit can cause 'blue baby syndrome,' a serious oxygen-transport condition in infants.
Higher than 95% of CA systems that report it · higher than 95% of U.S. systems
+24 contaminants were measured and came in below the limitShow all
| Contaminant | Measured | Federal limit |
|---|---|---|
| TTHM | 14–57 ug/L | 80 ug/L |
| Arsenic | 1.2–4.1 ug/L | 10 ug/L |
| Gross Alpha | 4.1 pCi/L | 15 pCi/L |
| Lead | 3.8 ug/L | 15 ug/L |
| Copper | 0.31 mg/L | 1.3 mg/L |
| HAA5 | 0–14 ug/L | 60 ug/L |
| Combined Radium | 1.1 pCi/L | 5 pCi/L |
| DBCP | 0–36 ng/L | 200 ng/L |
| Chlorine | 0.29–0.68 mg/L | 4 mg/L |
| Chromium, Total | 7.8–11 ug/L | 100 ug/L |
| Chromium | 6.7–10 ug/L | 100 ug/L |
| Fluoride | 0–0.39 mg/L | 4 mg/L |
| Perchlorate | 0–3.7 ug/L | — |
| Aluminum | 0–0.093 mg/L | — |
| Boron | 0–120 ug/L | — |
| Calcium | 54–84 mg/L | — |
| Sodium | 9.8–46 mg/L | — |
| Vanadium | 1.9–3.9 ug/L | — |
| Total Coliform | 1.2 | — |
| Alkalinity | 68–180 mg/L | — |
| Hardness | 180–280 mg/L | — |
| TOC | 1.6–2.8 mg/L | — |
| Gross Beta Particle Activity | 4.17 pCi/L | — |
| Uranium | 2.8 pCi/L | 20 pCi/L |
What this report doesn't tell you
14 of the 27 contaminants a community water system normally reports do not appear anywhere in Chino, City of — Chino, 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.