Drinking water quality · 2021
· Verified
What's in Rowland Water District — Rowland Heights, Ca, CA tap water
22 contaminants were measured in the Rowland Water District — Rowland Heights, Ca, CA water system's 2021 annual report. Each is shown below against its federal limit — 1 sit at or above that limit.
- Reporting year
- 2021
- Contaminants measured
- 22
- Over federal limit
- 1
- Approaching the limit
- 0
- Worst contaminant
- Lead
- Service area
- CA
6.0× the limit
state-level CCR
At or above the federal limit
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | 0–90 ug/LReported levelImported Surface Water Miramar (TVMWD) | None set | At or above the limit |
+By source (4)— Imported Surface Water Miramar (TVMWD), Groundwater Miramar (TVMWD), Imported Groundwater (CDWC) +1 more
| |||
| BariumA metal from erosion of natural deposits and industrial discharge. | 120–130 ug/LReported levelImported Groundwater (CDWC) | None set | Within the limit |
| AluminumA common element sometimes used as a treatment coagulant. | 58–240 ug/LReported levelImported Surface Water Weymouth (MWD) | None set | Detected — no federal limit |
| Strontium | 0.33 pCi/LReported levelImported Surface Water Miramar (TVMWD) | None set | Detected — no federal limit |
+By source (2)— Imported Surface Water Miramar (TVMWD), Imported Surface Water Weymouth (MWD)
| |||
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. | 1.4–63.3 ug/LReported levelGroundwater Miramar (TVMWD) | None set | Within the limit |
+By source (4)— Groundwater Miramar (TVMWD), Imported Groundwater (CDWC), Imported Surface Water Miramar (TVMWD) +1 more
| |||
| BromateA disinfection byproduct formed when bromide-containing water is treated with ozone. | 0–7.6 ug/LReported levelImported Surface Water Weymouth (MWD) | None set | Within the limit |
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 0–12.4 ug/LReported levelImported Surface Water Miramar (TVMWD) | None set | Within the limit |
+By source (4)— Imported Surface Water Miramar (TVMWD), Imported Surface Water Weymouth (MWD), Imported Groundwater (CDWC) +1 more
| |||
| PerchlorateA chemical used in rocket fuel and fireworks that can also form during disinfection. | 0.58–3.5 ug/LReported levelImported Groundwater (CDWC) | None set | Detected — no federal limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 3–7.5 mg/LReported levelImported Groundwater (CDWC) | 10 mg/LMCL | Within the limit |
+By source (2)— Imported Groundwater (CDWC), Imported Surface Water Miramar (TVMWD)
| |||
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.6–0.8 mg/LReported levelImported Surface Water Weymouth (MWD) | 4 mg/LMCL | Within the limit |
+By source (2)— Imported Surface Water Weymouth (MWD), Imported Groundwater (CDWC)
| |||
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chlorine Total | 2.43–2.78 mg/LReported levelImported Surface Water Miramar (TVMWD) | None set | Within the limit |
+By source (4)— Groundwater Miramar (TVMWD), Imported Groundwater (CDWC), Imported Surface Water Miramar (TVMWD) +1 more
| |||
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Combined RadiumCombined radium-226 and radium-228 — naturally occurring radioactive elements. | 2–3.2 pCi/LReported levelImported Groundwater (CDWC) | 5 pCi/LMCL | Within the limit |
+By source (3)— Imported Groundwater (CDWC), Imported Surface Water Weymouth (MWD), Groundwater Miramar (TVMWD)
| |||
| Gross Beta Particle ActivityGross beta particle activity — a combined measure of beta-emitting radioactive substances. | 4–7 pCi/LReported levelImported Surface Water Weymouth (MWD) | None set | Detected — no federal limit |
+By source (2)— Imported Surface Water Weymouth (MWD), Imported Surface Water Miramar (TVMWD)
| |||
| UraniumA naturally occurring radioactive metal from erosion of natural deposits. | 1–3 pCi/LReported levelImported Surface Water Weymouth (MWD) | 20 pCi/LMCL | Detected — no federal limit |
+By source (2)— Imported Surface Water Weymouth (MWD), Imported Groundwater (CDWC)
| |||
VOCs & pesticides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TrichloroethyleneAn industrial solvent (TCE) used in metal degreasing. | 0–1.3 ug/LReported levelImported Groundwater (CDWC) | 5 ug/LMCL | Within the limit |
+By source (4)— Imported Groundwater (CDWC), Groundwater Miramar (TVMWD), Imported Surface Water Miramar (TVMWD) +1 more
| |||
| TetrachloroethyleneAn industrial solvent (PCE) used in dry cleaning and degreasing. | 0–1.1 ug/LReported levelImported Groundwater (CDWC) | 5 ug/LMCL | Within the limit |
+By source (4)— Imported Groundwater (CDWC), Imported Surface Water Miramar (TVMWD), Imported Surface Water Weymouth (MWD) +1 more
| |||
| DBCP1,2-dibromo-3-chloropropane — a banned soil fumigant pesticide. | Not detected ng/LReported levelImported Groundwater (CDWC) | None set | None detected |
+By source (4)— Imported Groundwater (CDWC), Imported Surface Water Weymouth (MWD), Groundwater Miramar (TVMWD) +1 more
| |||
| Toluene | Not detected ug/LReported levelImported Surface Water Weymouth (MWD) | None set | None detected |
+By source (4)— Imported Surface Water Weymouth (MWD), Imported Groundwater (CDWC), Imported Surface Water Miramar (TVMWD) +1 more
| |||
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Escherichia coli (E. coli)Escherichia coli — bacteria found in the gut of humans and animals. | 0Reported levelImported Surface Water Weymouth (MWD) | 0Public health goal | None detected |
+By source (4)— Imported Surface Water Weymouth (MWD), Imported Surface Water Miramar (TVMWD), Groundwater Miramar (TVMWD) +1 more
| |||
| Total ColiformA group of bacteria used as an indicator of overall water-system sanitation. | 1.3 %Reported levelImported Surface Water Weymouth (MWD) | None set | Detected — no federal limit |
+By source (4)— Imported Surface Water Weymouth (MWD), Groundwater Miramar (TVMWD), Imported Surface Water Miramar (TVMWD) +1 more
| |||
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TurbidityA measure of cloudiness from suspended particles in the water. | Not detected %Reported levelImported Groundwater (CDWC) | None set | None detected |
| TOCTotal organic carbon — a measure of organic material dissolved in the water. | 1.7–2.6 mg/LReported levelImported Surface Water Weymouth (MWD) | None set | Detected — no federal limit |
+By source (2)— Imported Surface Water Weymouth (MWD), Imported Surface Water Miramar (TVMWD)
| |||
Source: Rowland Water District — Rowland Heights, Ca, CA's 2021 Consumer Confidence Report — the annual drinking-water report every U.S. utility is required to publish. The numbers on this page are the utility's own. A water-quality report covers an entire service area, not a single address.
People also ask about Rowland Water District — Rowland Heights, Ca, CA's water
+Is Rowland Water District — Rowland Heights, Ca, CA tap water safe to drink in 2021?
The 2021 Consumer Confidence Report for the Rowland Water District — Rowland Heights, Ca, CA water utility lists 1 contaminant at or above the federal limit: Lead. Whether that means the water is "unsafe" depends on which contaminant, how long the exposure, and individual health factors. The table on this page shows the measured value, the federal threshold, and the regulated statistic used for compliance.
+What contaminants are in Rowland Water District — Rowland Heights, Ca, CA tap water?
22 contaminants were measured in Rowland Water District — Rowland Heights, Ca, CA's 2021 Consumer Confidence Report, spanning disinfection byproducts, metals, and vocs & pesticides. 7 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.
+Which contaminants exceed federal limits in Rowland Water District — Rowland Heights, Ca, CA tap water?
One contaminant in Rowland Water District — Rowland Heights, Ca, CA's 2021 report sits at or above the federal limit: Lead (6.0× the limit). The EPA enforces these limits against the regulated reporting statistic — typically a running annual average or 90th percentile — not a one-off sample spike.
+What is the worst contaminant in Rowland Water District — Rowland Heights, Ca, CA tap water?
The contaminant with the highest measured value relative to its federal limit in the 2021 report is Lead, at 6.0× the federal threshold. It belongs to the metals family of contaminants.
+Where does the data on this page come from?
Every value is transcribed from Rowland Water District — Rowland Heights, Ca, CA's 2021 Consumer Confidence Report — the annual drinking-water report every U.S. public water utility is required by federal law to publish. The original source document is archived and viewable on this site. A water-quality report covers an entire service area, not a single address.
+How often is Rowland Water District — Rowland Heights, Ca, CA's water quality data updated?
Each U.S. public water utility publishes one Consumer Confidence Report per year, covering the prior calendar year's measurements. This page reflects the 2021 report; a new report will replace it once the utility publishes its next annual update.
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