Water Quality Technical Report — NEW POST, WI
- PWSID
- 055295301
- Population
- 150
- Source
- Groundwater
- Data Period
- Not available
- Last Updated
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Summary
NEW POST serves approximately 150 people in HAYWARD, Wisconsin. Based on available monitoring data, 0 contaminants have been measured above federal EPA standards (MCL) and 2 exceed health-based guidelines. The most significant finding is Lead (90th Percentile) at 0.004 mg/L, which is 20x the health guideline. Data is drawn from source-level compliance monitoring and covers recent years. Results reflect conditions at the point of collection (wells, treatment plants), not necessarily at the tap.
Key Findings
- Limited Testing Data: No contaminants detected in available monitoring data. This system may need more comprehensive testing.
Understanding the two thresholds
EPA Legal Limit (MCL)
The highest level of a contaminant allowed by federal law. Utilities that exceed this threshold face enforcement action. Limits balance health risk against the cost of treatment, so they are not always set at levels considered safe by independent researchers.
Health Guideline
The level below which independent researchers (CalEPA, WHO, EWG) believe there is no known health risk. Guidelines are not legally enforceable but are typically stricter than legal limits — often by 10x or more for contaminants like arsenic and lead.
A reading can be below the EPA limit (legally compliant) while still exceeding health guidelines (above levels considered safe by independent researchers).
No Monitoring Data Available
We don't have water quality monitoring data for NEW POST in our database. This doesn't mean the water hasn't been tested — the results aren't in the government data sources we pull from (Wisconsin DNR, EPA SDWIS, EPA UCMR5).
To check directly:
Compliance History
Formal EPA and DNR compliance events on record for this utility. Includes all events from the last 10 years plus any unresolved violations regardless of age. Health-based violations are legally enforceable thresholds that were exceeded; procedural events are monitoring or reporting lapses that don't indicate contamination by themselves.
Jan 1, 2024 – ongoing
Oct 1, 2022 – ongoing
Jul 1, 2020 – ongoing
Jan 1, 2020 – Dec 31, 2022
Jan 1, 2020 – Dec 31, 2022
Jan 1, 2020 – Dec 31, 2022
Jan 1, 2020 – Dec 31, 2022
Jan 1, 2020 – Dec 31, 2022
Jan 1, 2020 – Dec 31, 2022
Jan 1, 2020 – Dec 31, 2022
Jan 1, 2020 – Dec 31, 2022
Jan 1, 2020 – Dec 31, 2022
Jan 1, 2020 – Dec 31, 2022
Jan 1, 2020 – Dec 31, 2022
Jan 1, 2020 – Dec 31, 2022
Jan 1, 2020 – Dec 31, 2022
Jan 1, 2020 – Dec 31, 2022
Jan 1, 2020 – Dec 31, 2022
Jan 1, 2020 – Dec 31, 2022
Jan 1, 2020 – Dec 31, 2022
+ 30 older events in the 10-year window not shown
Source: EPA ECHO enforcement and violation records (via Envirofacts / SDWIS Federal Reports).
Action Steps
This system has contaminants above a legal limit or multiple health guidelines. The following steps are concrete things a homeowner or facility operator can do right now — starting with the most important non-commercial options.
- Request the utility's Consumer Confidence Report (CCR). The CCR compares utility-reported readings to the federal legal limits and is independent of this site. Utilities must make it available on request. EPA CCR search.
- Get a certified tap test. A state-certified laboratory can test your tap for a specific contaminant or a broader panel. A single-contaminant test runs in the low tens of dollars; a comprehensive panel runs several hundred. Ask for the EPA-certified lab list from Wisconsin DNR. Wisconsin DNR lab certification.
- Consider point-of-use filtration. For the specific contaminants detected in this system, the exceedance sections above list the technology categories (reverse osmosis, granular activated carbon, ion exchange, etc.) that target each class. Those are category-level descriptions — the right choice depends on the contaminant profile, budget, and installation constraints.
- Contact the utility directly. Ask about the specific contaminants you're concerned about and request the most recent sampling data. The EPA SDWIS portal lists utility contact details. EPA SDWIS system lookup.
- Check the utility's lead service line inventory. Under the Lead and Copper Rule Revisions (LCRR, 2024), utilities must publish a service line inventory identifying lines flagged as lead, galvanized-requiring-replacement, or unknown material. If your service line is flagged or unknown, the utility is required to replace it on a scheduled timeline. EPA Lead and Copper Rule Improvements.
Frequently Asked Questions
What contaminants are in HAYWARD water?
Based on available public monitoring data, 2 contaminants have been tested in HAYWARD's water supply. 2 were detected above reporting limits. The most notable detections include Lead (90th Percentile), Copper (90th Percentile). This data comes from source-level compliance monitoring at wells and treatment plants.
Does HAYWARD water meet EPA standards?
Based on available public monitoring data, no contaminants were measured above federal EPA standards in recent compliance monitoring. However, 2 contaminants exceed independent health guidelines, which are often stricter than legal limits. This assessment is based on source-level monitoring data (wells and treatment plants), not tap-level measurements.
Is HAYWARD WI water safe to drink?
Based on source-level compliance monitoring, all tested contaminants were within federal standards. However, compliance monitoring tests water at wells and treatment plants, not at individual taps. An on-site test is the only way to know what reaches your tap, as conditions can vary based on plumbing, blending, and distribution.
Does HAYWARD water have lead?
No. HAYWARD's most recent Lead and Copper Rule testing found a 90th-percentile lead level of 0.004 mg/L, which is below the EPA action level of 0.015 mg/L. That means at the systemwide level, lead is not exceeding the enforcement threshold. Lead levels can still vary significantly by individual building — older homes and schools with legacy plumbing can have much higher readings than the system average.
Cross-check against the official record
This report is our read of the public monitoring data. Every Wisconsin utility also publishes an annual Consumer Confidence Report (CCR) — a plain-language summary written by the utility itself, usually mailed with a water bill or posted on the utility's website. If anything in this report surprises you, request NEW POST's latest CCR directly from the utility, or browse the underlying compliance data on the Wisconsin DNR portal.
Data Sources and Methodology
Definitions
- Maximum Contaminant Level (MCL)
- The highest level of a contaminant allowed in drinking water, set by the EPA. MCLs are legally enforceable standards.
- Maximum Contaminant Level Goal (MCLG)
- The level of a contaminant below which there is no known or expected health risk. MCLGs are non-enforceable public health goals.
- Action Level
- The concentration of a contaminant which, if exceeded, triggers treatment or other requirements. Used for lead and copper.
- Health Advisory
- Non-enforceable guidelines set by the EPA providing information on contaminants that can cause health effects at certain exposure levels.
- Total Dissolved Solids (TDS)
- A measure of all dissolved minerals, salts, and organic matter in water, expressed in mg/L (ppm). Not a health hazard but affects taste and indicates overall mineral content.
- PFAS
- Per- and polyfluoroalkyl substances. A group of manufactured chemicals that do not break down in the environment. The EPA set enforceable limits for several PFAS compounds in 2024.
- Non-Detect (ND)
- The contaminant was tested for but not found above the laboratory's reporting limit. This does not mean zero — it means below the detection threshold.
- VOCs (Volatile Organic Compounds)
- Chemicals that evaporate easily and can contaminate groundwater. Sources include gasoline, industrial solvents, and dry cleaning fluids. Some are regulated by the EPA; many are monitored but not yet regulated.
Download Data
Cite This Report
WaterAdvantage. "Water Quality Technical Report: HAYWARD, WI (055295301)." WaterAdvantage.org, 2026-04-14. https://www.wateradvantage.org/report/055295301/detail
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