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Summary of sate of Minnesota water quality guidelines for stormwater harvesting and reuse systems for Irrigation

<font size=3>'''Summary of State of Minnesota water quality guidelines for stormwater harvesting and reuse systems for Irrigation'''</font size><br>
Link to this [[Summary of sate of Minnesota water quality guidelines for stormwater harvesting and reuse systems for Irrigation|table]]
<table class="sortable">
<tr>
<th>Water Quality Parameter</th>
<th>Impact of Parameter <sup>10</sup></th>
<th>Water Quality Guideline – Public Access Areas</th>
<th>Water Quality Guideline – Restricted Access Areas</th>
<th>Water Quality Guideline – Irrigation of Food Crops</th> 
<th>Comments</th>
</tr>
<tr>
<td>E. coli</td>
<td>Public Health</td>
<td>126 E. coli/100mL</td>
<td>Guidance to be determined at a future date</td>
<td>Guidance to be determined at a future date</td>
<td>2,3</td>
</tr>
<tr>
<td>Turbidity</td>
<td>Irrigation System Function</td>
<td>2-3 NTU</td>
<td>Guidance to be determined at a future date</td>
<td>Guidance to be determined at a future date</td>
<td>4,5</td>
</tr>

<tr>
<td>TSS</td>
<td>Irrigation System Function</td>
<td>5 mg/L</td>
<td>Guidance to be determined at a future date</td>
<td>Guidance to be determined at a future date</td>
<td>4,5,6</td>
</tr>
<tr>
<td>pH</td>
<td>Plant Health</td>
<td>6-9</td>
<td>Guidance to be determined at a future date</td>
<td>Guidance to be determined at a future date</td>
<td>4</td>
</tr>
<tr>
<td>Chloride</td>
<td>Plant Health; Corrosion of Metals</td>
<td>500 mg/L</td>
<td>Guidance to be determined at a future date</td>
<td>Guidance to be determined at a future date</td>
<td>7</td>
</tr>
<tr>
<td>Zinc</td>
<td>Plant Health</td>
<td>2 mg/L (longterm use); 10 mg/L (shortterm use)</td>
<td>Guidance to be determined at a future date</td>
<td>Guidance to be determined at a future date</td>
<td>8</td>
</tr>
<tr>
<td>Copper</td>
<td>Plant Health</td>
<td>0.2 mg/L (longterm use); 5 mg/L (shortterm use)</td>
<td>Guidance to be determined at a future date</td>
<td>Guidance to be determined at a future date</td>
<td>8</td>
</tr>

<tr>
<td>Temperature</td>
<td>Public Health</td>
<td>Guidance to be determined at a future date</td>
<td>Guidance to be determined at a future date</td>
<td>Guidance to be determined at a future date</td>
<td>9</td>
</tr>


</table>
<font size=1><sup>2</sup> – MPCA Bacterial Impairment Standard: 126 E. coli/100mL (geometric mean of 5 samples in 30 day period); no individual samples greater than 1260 E. coli/100mL<br>
<sup>3</sup> – EPA 2012 Recreational Water Quality Criteria – Recommendation 1 (Estimated illness rate = 36/1000)<br>
<sup>4</sup> – Based on typical range/value for water reuse programs in other states<br>
<sup>5</sup> –Useful for distribution system design, but often used a general indicator parameter, too.<br>
<sup>6</sup> – TSS guidance provided by Cathy Tran, DLI<br>
<sup>7</sup> – Per Table R.3b.6 in Metropolitan Council Stormwater Reuse Guide<br>
<sup>8</sup> – Suggested by Bruce Wilson. Per Table R.3b.5 in Metropolitan Council Stormwater Reuse Guide<br>
<sup>9</sup> - Recommendation from Anita Anderson on 12/6/2012 email as temperature impacts bacterial growth<br>
<sup>10</sup> –Per Tables R.1a.1 and R.3b.5 in Metropolitan Council Stormwater Reuse Guide</font size>

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