Drinking water quality · 2023
· Verified
· PWSID CA4010008
What's in Pismo Beach Water Department — Pismo Beach, Ca, CA tap water
3 contaminants in Pismo Beach Water Department — Pismo Beach, Ca, CA's water sat at or above a federal limit, led by TTHM at 1.4x the limit.
- !3 contaminants at or above a federal limit — worst is TTHM at 1.4x
- !1 contaminant within 20% of a limit
- !13 of 27 core regulated contaminants reported — 14 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.
- −43 contaminants at or above a federal limit
- −4 contaminants within 20% of a limit
- −0 open health-based violations
- −0 open monitoring / reporting violations
- −6 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
- TTHM1.4× the federal limit34–110 ug/L · limit 80 ug/L
Long-term exposure above the federal limit is linked to liver, kidney, and central-nervous-system effects and increased cancer risk.
Higher than 95% of CA systems that report it · higher than 95% of U.S. systems
- HAA51.1× the federal limit64 ug/L · limit 60 ug/L
Long-term exposure above the federal limit is associated with an increased cancer risk.
Higher than 95% of CA systems that report it · higher than 95% of U.S. systems
- Chlorine Free1.0× the federal limit2.5–4.18 mg/L · limit 4 mg/L
- Chlorite89% of the federal limit0.2–0.89 mg/L · limit 1 mg/L
Higher than 95% of CA systems that report it · higher than 90% of U.S. systems
+24 contaminants were measured and came in below the limitShow all
| Contaminant | Measured | Federal limit |
|---|---|---|
| Arsenic | 5 ug/L | 10 ug/L |
| Gross Alpha | 7.4 pCi/L | 15 pCi/L |
| Chromium, Total | 35 ug/L | 100 ug/L |
| Nitrate | 2.3 mg/L | 10 mg/L |
| Copper | 0.21 mg/L | 1.3 mg/L |
| Turbidity | 0.15 NTU | 1 NTU |
| Chlorine | 0–560 ug/L | 4000 ug/L |
| Fluoride | 0.32 mg/L | 4 mg/L |
| Barium | 0.036 mg/L | 2 mg/L |
| Chromium | 0.099 ug/L | 100 ug/L |
| Chlorate | 0.19–450 ug/L | — |
| Aluminum | 0–0.071 mg/L | — |
| Calcium | 113 mg/L | — |
| Chromium, Hexavalent | 0.048 ug/L | — |
| Lead | 0.0 mg/L | 0.015 mg/L |
| Potassium | 3.5 mg/L | — |
| Sodium | 57 mg/L | — |
| Vanadium | 15 ug/L | — |
| Alkalinity | 350 mg/L | — |
| Bicarbonate | 430 mg/L | — |
| Hardness | 479 mg/L | — |
| pH | 7.6–8.8 | — |
| TOC | 1.2–2.5 mg/L | — |
| Uranium | 5.67 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 Pismo Beach Water Department — Pismo Beach, 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-based4 violations on record · most recent Jan 2024resolved
- Monitoring1 violation on recordresolved
Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗