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🌍 Environmental Rules/Stormwater Management

Stormwater Management: Ewa Gentry vs Kapolei

How do stormwater management rules compare between Ewa Gentry, HI and Kapolei, HI?

Ewa Gentry and Kapolei have similar restriction levels.

Ewa Gentry, HI

Honolulu County

Heavy Restrictions

Ewa Gentry properties connecting to the city's separate storm sewer system are regulated by ROH Chapter 43, Article 11, which prohibits non-stormwater discharges and implements MS4 water quality standards.

View full Ewa Gentry rules β†’

Kapolei, HI

Honolulu County

Heavy Restrictions

Kapolei properties tied to the city's separate storm sewer system are regulated by ROH Chapter 43, Article 11, which bars non-stormwater discharges and enforces MS4 water quality standards.

View full Kapolei rules β†’

Key Facts Comparison

FactEwa GentryKapolei
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Highlighted rows indicate differences between cities.

Ewa Gentry FAQ

Can I drain my pool into the street in Ewa Gentry?

No. Chlorinated pool water is a prohibited non-stormwater discharge under Sec. 43-11.22 and must be dechlorinated and disposed of properly.

Is washing my car in the driveway allowed?

Residential car washing is generally tolerated, but soapy runoff to the storm drain can still violate water quality standards if it carries pollutants.

Kapolei FAQ

Can I pressure-wash my Kapolei driveway into the gutter?

If the runoff carries soaps, oils, or other pollutants to a storm drain, it is a prohibited non-stormwater discharge under Sec. 43-11.22.

What is the MS4 system?

The MS4 is the city's municipal separate storm sewer system, which carries untreated stormwater to coastal and stream outfalls under federal and local water quality rules.

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